Question 1mediummultiple choice
Study the full IPv6 explanation →CCNA Network Infrastructure and Connectivity • Complete Question Bank
Complete CCNA Network Infrastructure and Connectivity question bank — all 0 questions with answers and detailed explanations.
A switch displays the following output:
Interface Status VLAN
Gi1/0/5 connected 20 Gi1/0/6 notconnect 1 Gi1/0/24 trunk trunk
Which interface is operating as an access port in VLAN 20?
A network engineer must summarize the following routes before advertising them upstream:
172.16.32.0/24 172.16.33.0/24 172.16.34.0/24 172.16.35.0/24
Which summary route should be used?
interface FastEthernet0/10 switchport mode access switchport port-security switchport port-security maximum 2 switchport port-security mac-address sticky
SW1# show spanning-tree vlan 20
VLAN0020
Root ID Priority 24596
Address 0011.2233.4455
Bridge ID Priority 32788
Address 00aa.bbcc.ddee
Interface Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Gi1/0/23 Altn BLK 19 128.23 P2p
Gi1/0/24 Root FWD 4 128.24 P2pSW1# show spanning-tree vlan 10
VLAN0010
Root ID Priority 32778
Address 0011.2233.4456
Bridge ID Priority 32778
Address 0011.2233.4456
SW2# show spanning-tree vlan 10
VLAN0010
Root ID Priority 32778
Address 0011.2233.4455
Bridge ID Priority 32778
Address 0011.2233.4455Host IP: 192.168.14.77/27
IP address: 10.20.30.44 Subnet mask: 255.255.255.224
MLS# show ip interface brief | include Vlan Vlan10 192.168.10.1 YES manual up up Vlan20 192.168.20.1 YES manual up up
SW1# show interfaces gigabitethernet0/1
GigabitEthernet0/1 is up, line protocol is up
Hardware is Gigabit Ethernet, address is aaaa.bbbb.cccc (bia aaaa.bbbb.cccc)
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full Duplex, 1000Mbps, link type is auto, media type is 1000BaseLX
output flow-control is off, input flow-control is off
...
SW2# show interfaces gigabitethernet0/1
GigabitEthernet0/1 is down, line protocol is down
Hardware is Gigabit Ethernet, address is dddd.eeee.ffff (bia dddd.eeee.ffff)
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full Duplex, 1000Mbps, link type is auto, media type is 1000BaseSX
output flow-control is off, input flow-control is off
...Switch# show interfaces gigabitethernet1/0/1
GigabitEthernet1/0/1 is up, line protocol is up
Hardware is Gigabit Ethernet, address is aaaa.bbbb.cccc (bia aaaa.bbbb.cccc)
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is 1000BaseLX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 1000 bits/sec, 2 packets/sec
5 minute output rate 1000 bits/sec, 2 packets/sec
1234 packets input, 150000 bytes, 0 no buffer
Received 100 broadcasts (0 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
567 packets output, 100000 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped outSwitchA# show interfaces gigabitethernet 0/1
GigabitEthernet0/1 is down, line protocol is down (err-disabled)
Hardware is Gigabit Ethernet, address is 0011.2233.4455 (bia 0011.2233.4455)
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Auto-duplex, Auto-speed, 1000BaseTX/FX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 multicast)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
SwitchA# show errdisable detect
ErrDisable Reason Detection Status
------------------ -----------------
udld Enabled
bpduguard Enabled
security-violation Enabled
SwitchA# show interfaces gigabitethernet 0/1 status
Port Name Status Vlan Duplex Speed Type
Gi0/1 err-disabled 1 auto auto 10/100/1000BaseTXSwitchA# show interfaces gigabitethernet 0/1
GigabitEthernet0/1 is up, line protocol is up
Hardware is Gigabit Ethernet, address is aaaa.bbbb.cccc (bia aaaa.bbbb.cccc)
Internet address is 192.168.1.1/30
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is SFP
output flow-control is off, input flow-control is off
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 00:05:00
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 1000 bits/sec, 1 packets/sec
5 minute output rate 1000 bits/sec, 1 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped outSwitch# show interfaces gigabitEthernet 0/1
GigabitEthernet0/1 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 0011.2233.4455 (bia 0011.2233.4455)
Description: Workstation port
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Auto-duplex, Auto-speed, 100Mb/s, Half-duplex
input flow-control is off, output flow-control is off
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 12000 bits/sec, 15 packets/sec
5 minute output rate 8000 bits/sec, 10 packets/sec
123456 packets input, 98765432 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
98765 packets output, 87654321 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped outSwitchA# show interfaces GigabitEthernet0/1
GigabitEthernet0/1 is up, line protocol is down
Hardware is Gigabit Ethernet, address is aabb.cc00.0101 (bia aabb.cc00.0101)
Description: Link to SwitchB Gi0/1
Internet address is 192.168.10.1/24
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped outSwitchA# show interfaces gigabitethernet0/1
GigabitEthernet0/1 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 0011.2233.4401 (bia 0011.2233.4401)
Description: Link to SwitchB
Internet address is 192.168.1.1/30
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
1123 packets input, 123456 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
1123 packets output, 123456 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
SwitchA# show interfaces gigabitethernet0/1 counters errors
Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize OutDiscards
Gi0/1 0 0 0 0 0 0
Port Single-Col Multi-Col Late-Col Excess-Col Carri-Sen Runts Giants
Gi0/1 0 0 0 0 0 0 0SwitchA# show interfaces gigabitethernet 0/1
GigabitEthernet0/1 is up, line protocol is up
Hardware is Gigabit Ethernet, address is aaaa.bbbb.cccc (bia aaaa.bbbb.cccc)
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
12345 packets input, 1234567 bytes, 0 no buffer
Received 123 broadcasts (0 multicast)
0 runts, 0 giants, 0 throttles
1000 CRC errors, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
23456 packets output, 2345678 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
SwitchB# show interfaces gigabitethernet 0/1
GigabitEthernet0/1 is up, line protocol is up
Hardware is Gigabit Ethernet, address is dddd.eeee.ffff (bia dddd.eeee.ffff)
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Half-duplex, 100Mb/s, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:01, output 00:00:01, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
54321 packets input, 543210 bytes, 0 no buffer
Received 321 broadcasts (0 multicast)
0 runts, 0 giants, 0 throttles
0 CRC errors, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
65432 packets output, 654321 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped outSW1# show interfaces gigabitethernet 0/1
GigabitEthernet0/1 is up, line protocol is up
Hardware is Gigabit Ethernet, address is aaaa.bbbb.cccc (bia aaaa.bbbb.cccc)
Description: Link to SW2
Internet address is 10.10.10.1/30
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 2000 bits/sec, 2 packets/sec
5 minute output rate 1000 bits/sec, 1 packets/sec
12345 packets input, 1234567 bytes
Received 1234 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 56789 multicast, 0 pause input
0 input packets with dribble condition detected
23456 packets output, 2345678 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped outSwitch# show running-config interface GigabitEthernet0/1 Building configuration... Current configuration : 155 bytes ! interface GigabitEthernet0/1 description Access Port for VLAN 10 switchport mode access switchport access vlan 10 no ip address spanning-tree portfast end Switch# show vlan brief VLAN Name Status Ports ---- -------------------------------- --------- ------------------------------- 1 default active Gi0/2, Gi0/3, Gi0/4 10 Engineering active Gi0/1 100 Management active Gi0/24 1002 fddi-default act/unsup 1003 token-ring-default act/unsup 1004 fddinet-default act/unsup 1005 trnet-default act/unsup Switch# show interfaces GigabitEthernet0/1 switchport Name: Gi0/1 Switchport: Enabled Administrative Mode: static access Operational Mode: static access Administrative Trunking Encapsulation: dot1q Operational Trunking Encapsulation: native Negotiation of Trunking: Off Access Mode VLAN: 10 (Engineering) Trunking Native Mode VLAN: 1 (default) Administrative Native VLAN tagging: enabled Voice VLAN: none Administrative private-vlan host-association: none Administrative private-vlan mapping: none Administrative private-vlan trunk native VLAN: none Administrative private-vlan trunk Native VLAN tagging: enabled Administrative private-vlan trunk encapsulation: dot1q Administrative private-vlan trunk normal VLANs: none Administrative private-vlan trunk private VLANs: none Operational private-vlan: none Trunking VLANs Enabled: ALL Pruning VLANs Enabled: 2-1001 Capture Mode Disabled Capture VLANs Allowed: ALL Protected: false Appliance trust: none
Switch# show ip interface brief Interface IP-Address OK? Method Status Protocol Vlan1 192.168.1.1 YES NVRAM up up Vlan10 192.168.10.1 YES NVRAM down down GigabitEthernet0/1 unassigned YES NVRAM down down GigabitEthernet0/2 unassigned YES NVRAM down down Switch# show running-config interface vlan10 Building configuration... Current configuration : 63 bytes ! interface Vlan10 ip address 192.168.10.1 255.255.255.0 no shutdown end
WLC# show wlan summary Number of WLANs................................ 3 WLAN ID WLAN Profile Name / SSID Status Interface ------- ------------------------------------ -------- ------------ 1 CorpNet / CorpNet Enabled management 2 GuestNet / GuestNet Enabled guest 3 AdminNet / AdminNet Disabled admin WLC# show wlan 1 WLAN Profile Name.................................. CorpNet SSID................................................. CorpNet Status.............................................. Enabled Security Policies.................................... WPA2+CCKM ... Layer 2 Security..................................... WPA2 802.1x............................................. Disabled PSK................................................ Enabled PSK Passphrase..................................... Cisco123 CCKM.............................................. Enabled ... Interface........................................... management Multicast Interface.................................. management ...
WLC# show ap radio summary AP Name Slot Radio Channel Power Clients Channel Util Noise Interference AP-1 0 802.11b 1 17 12 15% -95 10% AP-1 1 802.11a 36 15 8 85% -87 70% AP-2 0 802.11b 6 17 10 12% -94 8% AP-2 1 802.11a 36 15 9 82% -88 68% AP-3 0 802.11b 11 17 14 14% -96 9% AP-3 1 802.11a 40 15 7 30% -90 15% AP-4 0 802.11b 1 17 11 13% -95 10% AP-4 1 802.11a 36 15 8 80% -87 72%
C:\) ipconfig Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : IPv4 Address. . . . . . . . . . . : 169.254.10.15 Subnet Mask . . . . . . . . . . . : 255.255.0.0 Default Gateway . . . . . . . . . : Switch# show interfaces gigabitethernet 0/1 status Port Name Status Vlan Duplex Speed Type Gi0/1 connected 100 a-full a-100 10/100/1000BaseTX Switch# show running-config interface gigabitethernet 0/1 Building configuration... Current configuration : 100 bytes ! interface GigabitEthernet0/1 description Client Access Port switchport mode access switchport access vlan 100 spanning-tree portfast end
SwitchA# show interfaces Gi1/0/1
GigabitEthernet1/0/1 is up, line protocol is up
Hardware is Gigabit Ethernet, address is aabb.ccdd.0001 (bia aabb.ccdd.0001)
Description: Link to SwitchB
Internet address is 192.168.1.1/30
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is 10Gbase-SR
input flow-control is off, output flow-control is off
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 1000 bits/sec, 1 packets/sec
5 minute output rate 1000 bits/sec, 1 packets/sec
123456 packets input, 12345678 bytes
Received 1200 broadcasts (0 multicast)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
123456 packets output, 12345678 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
SwitchA# show interfaces Gi1/0/1 transceiver details
Diagnostic Monitoring: Yes
Temperature: 45.2 C
Voltage: 3.29 V
Current: 12.5 mA
Output Power: -2.3 dBm
Receive Power: -15.1 dBm
Transmit Fault: No
LOS: No
Nominal bit rate: 10300 Mbps
Connector type: LC
Wavelength: 850 nm
Distance: 300 m
Vendor: CISCO
Part Number: SFP-10G-SR
Serial Number: FNS1234567SwitchA# show interfaces gigabitethernet1/0/1
GigabitEthernet1/0/1 is up, line protocol is up
Hardware is Gigabit Ethernet, address is aaaa.bbbb.cccc (bia aaaa.bbbb.cccc)
Description: Fiber uplink to SwitchB
Internet address is 192.168.1.1/30
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full Duplex, 1000Mbps, link type is auto, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 1000 bits/sec, 2 packets/sec
5 minute output rate 1000 bits/sec, 2 packets/sec
1250 packets input, 125000 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
1250 input errors, 1250 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
1250 packets output, 125000 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
SwitchA# show interfaces transceiver details gigabitethernet1/0/1
Transceiver Type: SFP
Product Name: SFP-GE-SX-MM850
Serial Number: FNS1234567
Connector type: LC
Wavelength: 850nm
Transfer Distance: 550m (50/125 µm OM3)
Diagnostic Monitoring: Yes
Temperature: 45.2 Celsius
Voltage: 3.30 Volts
Current: 8.5 mA
Output Power: -3.5 dBm
Receive Power: -20.1 dBm
Transmit Power High Threshold: -1.0 dBm
Transmit Power Low Threshold: -9.5 dBm
Receive Power High Threshold: 0.0 dBm
Receive Power Low Threshold: -17.0 dBmSwitchA# show interfaces gigabitethernet1/0/1 transceiver
Diagnostic Monitoring Information:
Temperature: 45.2°C
Voltage: 3.3 V
Current: 10.5 mA
Output Power: 0.5 mW
Input Power: 0.2 mW
Laser Bias: 12.0 mA
SwitchA# show interfaces gigabitethernet1/0/1 | include errors
5 minute input rate 1002000 bits/sec, 200 packets/sec
5 minute output rate 1005000 bits/sec, 210 packets/sec
Input errors: 0, CRC errors: 0, Frame errors: 0
Output errors: 0, Collisions: 0
SwitchA# show interfaces gigabitethernet1/0/1
GigabitEthernet1/0/1 is up, line protocol is up (err-disabled)
Hardware is Gigabit Ethernet, address is aaaa.bbbb.cccc
MTU 1500 bytes, BW 1000000 Kbit/sec
Full-duplex, 1000Mb/s
input flow-control is off, output flow-control is off
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
SwitchA# show logging | include SFP
%PHY-4-UNSUPPORTED_TRANSCEIVER: Unsupported transceiver found in Gi1/0/1
%PM-4-ERR_DISABLE: link-flap error detected on Gi1/0/1, putting Gi1/0/1 in err-disable stateSwitchA# show interfaces gigabitethernet1/0/1
GigabitEthernet1/0/1 is up, line protocol is up
Hardware is Gigabit Ethernet, address is aaaa.bbbb.cccc (bia aaaa.bbbb.cccc)
Description: Link to SwitchB
Internet address is 192.168.1.1/30
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is SFP
output flow-control is unsupported, input flow-control is unsupported
Auto-negotiation is turned on
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
SwitchA# show interfaces gigabitethernet1/0/1 transceiver
Diagnostic Monitoring Information (DOM) for SFP+ 10GBASE-LR
Temperature: 45 degrees C
Voltage: 3.3 V
Current: 15 mA
Output Power: 0.5 mW (-3 dBm)
Input Power: 0.01 mW (-20 dBm)
Laser bias current: 10 mA
SwitchB# show interfaces gigabitethernet1/0/1
GigabitEthernet1/0/1 is up, line protocol is up
Hardware is Gigabit Ethernet, address is dddd.eeee.ffff (bia dddd.eeee.ffff)
Description: Link to SwitchA
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is SFP
output flow-control is unsupported, input flow-control is unsupported
Auto-negotiation is turned on
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
SwitchB# show interfaces gigabitethernet1/0/1 transceiver
Diagnostic Monitoring Information (DOM) for SFP+ 10GBASE-LR
Temperature: 42 degrees C
Voltage: 3.3 V
Current: 12 mA
Output Power: 0.4 mW (-4 dBm)
Input Power: 0.02 mW (-17 dBm)
Laser bias current: 8 mASwitch#show interfaces gigabitEthernet 1/0/24
GigabitEthernet1/0/24 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is aabb.cc01.1824 (bia aabb.cc01.1824)
Description: Server-01
Internet address is 192.168.1.10/24
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 00:02:34
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 12000 bits/sec, 12 packets/sec
5 minute output rate 8000 bits/sec, 8 packets/sec
12345 packets input, 1234567 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
12345 packets output, 1234567 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
Switch#show controllers gigabitEthernet 1/0/24
Interface GigabitEthernet1/0/24
Hardware is Gigabit Ethernet
Media Type: 10/100/1000BaseTX
PHY: Marvell 88E1111
MASTER: internal
Auto-negotiation: enabled
Link Partner Capabilities: 10/100/1000BaseT, Full-duplex
Local Capabilities: 10/100/1000BaseT, Full-duplex
Advertised Capabilities: 10/100/1000BaseT, Full-duplex
Operational: 1000BaseT, Full-duplex
Flow Control: off (both sides)
MDIX: off (crossover cable not detected)
Cable length: 100 meters
Speed: 1000 Mb/s
Duplex: Full
Errors:
CRC errors: 0
Alignment errors: 0
Symbol errors: 0
False carrier: 0
Runts: 0
Giants: 0
Transceiver: internal
DTE status: up
Loopback: none
Last link flapped: 00:00:05 agoServerFarm-SW1# show controllers GigabitEthernet0/1
Interface GigabitEthernet0/1
Hardware is Gigabit Ethernet
Media Type: 1000BaseSX SFP
Link Status: Up
Auto-negotiation: off
Speed: 1000 Mbps
Duplex: Full
Transmit Errors: 0
Receive Errors: 0
CRC Errors: 0
Frame Errors: 0
Runts: 0
Giants: 0
Input Errors: 0
Output Errors: 0
Collisions: 0
Late Collisions: 0
Deferred: 0
Lost Carrier: 0
No Carrier: 0
FCS Errors: 0
Symbol Errors: 0
ServerFarm-SW1# show interfaces GigabitEthernet0/1
GigabitEthernet0/1 is up, line protocol is up
Hardware is Gigabit Ethernet, address is 0011.2233.4455 (bia 0011.2233.4455)
Description: Uplink to Access-SW1
Internet address is 192.168.1.2/30
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is SX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 1000 bits/sec, 2 packets/sec
5 minute output rate 1000 bits/sec, 2 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
ServerFarm-SW1# show interfaces status
Port Name Status Vlan Duplex Speed Type
Gi0/1 Uplink to Access-SW1 connected trunk full 1000 1000BaseSX SFP
Gi0/2 Server1 connected 100 full 1000 10/100/1000BaseTX
Gi0/3 Server2 connected 100 full 1000 10/100/1000BaseTXC:\Users\Admin>ipconfig /all Windows IP Configuration Host Name . . . . . . . . . . . . : Host-A Primary Dns Suffix . . . . . . . : Node Type . . . . . . . . . . . . : Hybrid IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No Ethernet adapter Ethernet0: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Physical Address. . . . . . . . . : 00-50-56-8A-2B-1C DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Link-local IPv6 Address . . . . . : fe80::250:56ff:fe8a:2b1c%12(Preferred) IPv4 Address. . . . . . . . . . . : 192.168.1.100(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Lease Obtained. . . . . . . . . . : Tuesday, October 5, 2023 10:00:00 AM Lease Expires . . . . . . . . . . : Wednesday, October 6, 2023 10:00:00 AM Default Gateway . . . . . . . . . : 192.168.1.1 DHCP Server . . . . . . . . . . . : 192.168.1.1 DNS Servers . . . . . . . . . . . : 8.8.8.8 Primary WINS Server . . . . . . . : NetBIOS over Tcpip. . . . . . . . : Enabled
Router# show ipv6 interface g0/0/0
GigabitEthernet0/0/0 is up, line protocol is up
IPv6 is enabled, link-local address is FE80::21A:2BFF:FE3C:4D5E
No global unicast address is configured
Joined group address(es):
FF02::1
FF02::2
FF02::1:FF3C:4D5E
MTU is 1500 bytes
ICMP error messages limited to one every 100 milliseconds
ICMP redirects are enabled
ICMP unreachables are sent
ND DAD is enabled, number of DAD attempts: 1
ND reachable time is 30000 milliseconds (using 30000)
ND advertised reachable time is 0 (unspecified)
ND advertised retransmit interval is 0 (unspecified)
ND router advertisements are sent every 200 seconds
ND router advertisements live for 1800 seconds
ND advertised default router preference is Medium
Hosts use stateless autoconfiguration for addresses.Switch#show interfaces vlan 10
Vlan10 is administratively down, line protocol is down
Hardware is Ethernet SVI, address is 0011.2233.4455 (bia 0011.2233.4455)
Internet address is 192.168.10.1/24
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not supported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes
0 packets output, 0 bytesAP Name : AP9130-01 MAC Address : aabb.cc00.0100 Admin State : ENABLED Operational State : UP Channel Width : 80 MHz Channel : 36 DFS Status : DFS-NON-COMPLIANT Primary Channel : 36 Secondary Channel : 40 Radio Band : 5 GHz Client Count : 25 Utilization : 75% Interference : HIGH Power Level : 1 (Maximum) Antenna Type : Internal Antenna Gain : 4 dBi 802.11 Protocol : 802.11ac Beacon Interval : 100 TU DTIM Period : 2 Supported Data Rates : 6,9,12,18,24,36,48,54 Mbps MCS Rates : 0-9 (HT), 0-9 (VHT) QoS Parameters : WMM Enabled Security : WPA2-PSK Rogue Detection : Enabled
Switch#show vlan brief VLAN Name Status Ports ---- -------------------------------- --------- ------------------------------- 1 default active Gi1/0/1, Gi1/0/2, Gi1/0/3 10 Sales active Gi1/0/12 20 Engineering active Gi1/0/15 1002 fddi-default act/unsup 1003 token-ring-default act/unsup 1004 fddinet-default act/unsup 1005 trnet-default act/unsup Switch#show interfaces trunk Port Mode Encapsulation Status Native vlan Gi1/0/24 on 802.1q trunking 1 Port Vlans allowed on trunk Gi1/0/24 1-4094 Port Vlans allowed and active in management domain Gi1/0/24 1,10,20 Port Vlans in spanning tree forwarding state and not pruned Gi1/0/24 1,10,20
R1# show interfaces gigabitEthernet 0/0
GigabitEthernet0/0 is up, line protocol is up (looped)
Hardware is Gigabit Ethernet, address is aabb.cc00.0100 (bia aabb.cc00.0100)
Internet address is 10.0.0.1/30
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is RJ45
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped outYou are connected to R1. The link between R1 and R2 is experiencing intermittent connectivity and poor performance. Review the provided show interface output to identify the root cause(s) of the issue, then apply the necessary configuration changes to resolve the problem and restore full connectivity.
Output from R1: ``` GigabitEthernet0/0 is up, line protocol is up (connected) Hardware is Gigabit Ethernet, address is aaaa.bbbb.cccc (bia aaaa.bbbb.cccc) Internet address is 192.168.1.1/30 MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec) Half-duplex, 100Mb/s, link type is auto, media type is RJ45 output flow-control is unsupported, input flow-control is unsupported ARP type: ARPA, ARP Timeout 04:00:00 Last input 00:00:01, output 00:00:01, output hang never Last clearing of "show interface" counters 00:01:23 Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 150 packets input, 1500 bytes, 0 no buffer Received 0 broadcasts (0 multicasts) 0 runts, 0 giants, 0 throttles 150 input errors, 150 CRC, 0 frame, 0 overrun, 0 ignored 0 watchdog, 0 multicast, 0 pause input 0 input packets with dribble condition detected 200 packets output, 2000 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 babbles, 0 late collision, 0 deferred 0 lost carrier, 0 no carrier 0 output buffer failures, 0 output buffers swapped out ```
R1# show interfaces GigabitEthernet0/0
GigabitEthernet0/0 is up, line protocol is up
Hardware is ISR4321-2x1GE, address is aabb.cc00.0100 (bia aabb.cc00.0100)
Internet address is 192.168.1.1/30
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is RJ45
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 00:01:23
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 1000 bits/sec, 2 packets/sec
5 minute output rate 1000 bits/sec, 2 packets/sec
512 packets input, 51200 bytes, 0 no buffer
Received 512 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
150 input errors, 150 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
512 packets output, 51200 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped outYou are connected to R1. The link between R1 and R2 is experiencing packet loss and slow performance. Examine the following partial show interface output:
R1# show interfaces gigabitEthernet 0/0
GigabitEthernet0/0 is up, line protocol is up
Duplex: Full, Speed: Auto, 100Mb/s
Input errors: 12345, CRC: 5000, frame: 0, overrun: 0, ignored: 0
R2# show interfaces gigabitEthernet 0/0
GigabitEthernet0/0 is up, line protocol is up
Duplex: Half, Speed: Auto, 100Mb/s
Input errors: 0, CRC: 0, collisions: 5000, late collisions: 0
Identify the root cause of the issue, and apply the necessary fix on R1 to resolve the problem.
R1# show interfaces g0/0
GigabitEthernet0/0 is up, line protocol is up
Hardware is CN Gigabit Ethernet, address is aabb.cc00.0100 (bia aabb.cc00.0100)
Internet address is 10.0.0.1/30
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, link type is auto, media type is RJ45
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 12000 bits/sec, 10 packets/sec
5 minute output rate 15000 bits/sec, 12 packets/sec
12345 packets input, 987654 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
12345 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
67890 packets output, 543210 bytes, 0 underruns
0 output errors, 0 collisions, 12 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped outR1# show interfaces gigabitethernet 0/0
GigabitEthernet0/0 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is aabb.cc00.0101 (bia aabb.cc00.0101)
Internet address is 10.0.0.1/30
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is RJ45
output flow-control is unsupported, input flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:05, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
5123 packets input, 456789 bytes, 0 no buffer
Received 2345 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
1234 input errors, 567 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
7890 packets output, 123456 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped outR1# show interfaces gigabitEthernet 0/0
GigabitEthernet0/0 is up, line protocol is down
Hardware is ISR4331, address is aabb.cc00.0100 (bia aabb.cc00.0100)
Internet address is 10.0.0.1/30
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Auto-duplex, Auto-speed, 1000BaseTX/FX
input errors 0, CRC 0, frame 0, overrun 0, ignored 0
output errors 0, collisions 0, interface resets 0
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
R1# show running-config interface gigabitEthernet 0/0
Building configuration...
Current configuration : 114 bytes
!
interface GigabitEthernet0/0
ip address 10.0.0.1 255.255.255.252
shutdown
endR1# show interfaces GigabitEthernet0/0
GigabitEthernet0/0 is up, line protocol is up
Hardware is ISR4331-2x1GE, address is aabb.cc00.0100 (bia aabb.cc00.0100)
Internet address is 192.0.2.1/30
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, link type is auto, media type is RJ45
output flow-control is unsupported, input flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 12000 bits/sec, 12 packets/sec
5 minute output rate 8000 bits/sec, 8 packets/sec
12034 packets input, 1234567 bytes, 0 no buffer
Received 12034 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
150 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
45678 packets output, 4567890 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
R1#R1# show interfaces gi0/0
GigabitEthernet0/0 is up, line protocol is down
Hardware is Gigabit Ethernet, address is aabb.cc00.0100 (bia aabb.cc00.0100)
Internet address is 192.168.1.1/30
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, link type is auto, media type is RJ45
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped outR1# show interfaces gigabitethernet0/0
GigabitEthernet0/0 is up, line protocol is down
Hardware is Gigabit Ethernet, address is aabb.cc00.0100 (bia aabb.cc00.0100)
Description: Link to R2
Internet address is 203.0.113.1/30
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Auto-duplex, Auto-speed, 1000Mb/s, Full-duplex
input errors 0, CRC 0, frame 0, overrun 0, ignored 0
output errors 0, collisions 0, interface resets 0
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped outR1# show interfaces gigabitEthernet 0/0
GigabitEthernet0/0 is up, line protocol is up
Hardware is ISR4331-2x1GE, address is aabb.cc00.0100 (bia aabb.cc00.0100)
Internet address is 10.0.0.1/30
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is RJ45
output flow-control is unsupported, input flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 00:10:00
Input queue: 0/375/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 1000 bits/sec, 2 packets/sec
5 minute output rate 1000 bits/sec, 2 packets/sec
120 packets input, 9600 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
120 packets output, 9600 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
R1# show interfaces gigabitEthernet 0/1
GigabitEthernet0/1 is up, line protocol is down
Hardware is ISR4331-2x1GE, address is aabb.cc00.0101 (bia aabb.cc00.0101)
Internet address is 10.0.0.5/30
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Half-duplex, 100Mb/s, media type is RJ45
output flow-control is unsupported, input flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 00:10:00
Input queue: 0/375/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 1000 bits/sec, 2 packets/sec
5 minute output rate 1000 bits/sec, 2 packets/sec
120 packets input, 9600 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
150 input errors, 150 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
120 packets output, 9600 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped outR1# show interfaces GigabitEthernet0/0
GigabitEthernet0/0 is up, line protocol is up
Hardware is Gigabit Ethernet, address is aaaa.bbbb.cccc (bia aaaa.bbbb.cccc)
Internet address is 192.168.1.1/30
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is RJ45
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:05, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
12345 packets input, 1234567 bytes
Received 123 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
1500 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
12345 packets output, 1234567 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
R1# show interfaces GigabitEthernet0/1
GigabitEthernet0/1 is up, line protocol is down
Hardware is Gigabit Ethernet, address is aaaa.bbbb.cccd (bia aaaa.bbbb.cccd)
Internet address is 192.168.1.5/30
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Auto-duplex, Auto-speed, media type is RJ45
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:05, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
R1# show running-config interface GigabitEthernet0/0
Building configuration...
Current configuration : 100 bytes
!
interface GigabitEthernet0/0
no shutdown
ip address 192.168.1.1 255.255.255.252
duplex full
speed 1000
end
R1# show running-config interface GigabitEthernet0/1
Building configuration...
Current configuration : 75 bytes
!
interface GigabitEthernet0/1
no shutdown
ip address 192.168.1.5 255.255.255.252
endYou are connected to R1. The network team reports intermittent connectivity between R1 and R2. Examine the following `show interface` output from R1 to identify the root cause of the issue. Then apply the necessary configuration commands on R1 to resolve the problem.
GigabitEthernet0/0 is up, line protocol is up Internet address is 10.0.0.1/30 MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec, reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec) Full-duplex, 100Mb/s, media type is RJ45 output flow-control is unsupported, input flow-control is unsupported Last input 00:00:01, output 00:00:01, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 100 packets input, 8000 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 100 input errors, 100 CRC, 0 frame, 0 overrun, 0 ignored 0 output errors, 0 collisions, 0 interface resets 0 output buffer failures, 0 output buffers swapped out
R1# show interfaces GigabitEthernet0/0
GigabitEthernet0/0 is up, line protocol is up
Hardware is CN Gigabit Ethernet, address is 0000.0c12.3456 (bia 0000.0c12.3456)
Internet address is 10.0.0.1/30
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is RJ45
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:05, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 1000 bits/sec, 2 packets/sec
5 minute output rate 2000 bits/sec, 3 packets/sec
1500 packets input, 120000 bytes, 0 no buffer
Received 50 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
100 input errors, 100 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
1500 packets output, 130000 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped outR1#show running-config | section interface
interface GigabitEthernet0/0
ip address 192.0.2.1 255.255.255.252
duplex auto
speed auto
media-type rj45
!
interface GigabitEthernet0/1
ip address 203.0.113.1 255.255.255.0
duplex auto
speed auto
!
interface GigabitEthernet0/2
no ip address
shutdown
!
R1#show ipv6 interface brief
GigabitEthernet0/0 [up/up]
FE80::1
GigabitEthernet0/1 [up/up]
FE80::2
R1#ping 203.0.113.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 203.0.113.2, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
R2#show running-config | section interface
interface GigabitEthernet0/0
ip address 192.0.2.2 255.255.255.252
duplex auto
speed auto
!
interface GigabitEthernet0/1
ip address 203.0.113.2 255.255.255.0
duplex auto
speed auto
!R1#show running-config | section interface interface GigabitEthernet0/0 ip address 198.51.100.1 255.255.255.252 duplex auto speed auto ! interface GigabitEthernet0/1 ip address 192.168.1.1 255.255.255.0 duplex auto speed auto ! R1#show ip interface brief Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0 198.51.100.1 YES manual up up GigabitEthernet0/1 192.168.1.1 YES manual up up R1#show ipv6 interface brief GigabitEthernet0/0 [unassigned] GigabitEthernet0/1 [unassigned] R1#show ip arp Protocol Address Age (min) Hardware Addr Type Interface Internet 198.51.100.2 0 aabb.cc00.0200 ARPA GigabitEthernet0/0 Internet 192.168.1.1 - aabb.cc00.0100 ARPA GigabitEthernet0/1 Internet 192.168.1.10 0 aabb.cc00.0300 ARPA GigabitEthernet0/1
R1# show running-config | section interface
interface GigabitEthernet0/0
ip address 192.168.1.1 255.255.255.0
no shutdown
!
interface GigabitEthernet0/1
no ip address
ipv6 address 2001:db8:acad:1::/64 eui-64
no shutdown
!
interface GigabitEthernet0/2
ip address 10.0.0.1 255.255.255.252
no shutdown
!
R1# show ip interface brief
Interface IP-Address OK? Method Status Protocol
GigabitEthernet0/0 192.168.1.1 YES manual up up
GigabitEthernet0/1 unassigned YES manual up up
GigabitEthernet0/2 10.0.0.1 YES manual up up
R1# show ipv6 interface brief
GigabitEthernet0/1 [up/up]
FE80::/10
2001:DB8:ACAD:1:20C:29FF:FE12:3456
R1# ping 203.0.113.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 203.0.113.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
R1# ping 2001:db8:acad:2::1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:DB8:ACAD:2::1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
(Information: R2's loopback is 203.0.113.1/32 reachable via R2's G0/0 192.168.1.2/24. R3's G0/0 is 2001:db8:acad:2::1/64, R3's G0/0 link-local is FE80::2.)R1#show running-config | section interface
interface GigabitEthernet0/0
ip address 10.0.0.1 255.255.255.0
duplex auto
speed auto
!
interface GigabitEthernet0/1
ip address 10.0.0.5 255.255.255.252
duplex auto
speed auto
!
interface Loopback0
ip address 198.51.100.1 255.255.255.0
!
R1#show ip interface brief
Interface IP-Address OK? Method Status Protocol
GigabitEthernet0/0 10.0.0.1 YES manual up up
GigabitEthernet0/1 10.0.0.5 YES manual up up
Loopback0 198.51.100.1 YES manual up up
R1#show ipv6 interface brief
GigabitEthernet0/0 [unassigned]
GigabitEthernet0/1 [unassigned]
Loopback0 [unassigned]
R1#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route
Gateway of last resort is not set
10.0.0.0/24 is subnetted, 1 subnets
C 10.0.0.0/24 is directly connected, GigabitEthernet0/0
198.51.100.0/24 is subnetted, 1 subnets
C 198.51.100.0/24 is directly connected, Loopback0
R1#ping 10.0.0.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.0.2, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)R1#show running-config Building configuration... hostname R1 ! interface GigabitEthernet0/0 ip address 192.0.2.1 255.255.255.0 ipv6 address 2001:db8:1::/64 eui-64 no shutdown ! interface GigabitEthernet0/1 ip address 198.51.100.1 255.255.255.0 ipv6 address 2001:db8:2::1/64 no shutdown ! ip route 0.0.0.0 0.0.0.0 192.0.2.254 ! end R2#show running-config Building configuration... hostname R2 ! interface GigabitEthernet0/0 ip address 192.0.2.2 255.255.255.252 ipv6 address 2001:db8:1::2/64 no shutdown ! interface GigabitEthernet0/1 ip address 203.0.113.1 255.255.255.0 no shutdown ! end R1#show ip interface brief Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0 192.0.2.1 YES manual up up GigabitEthernet0/1 198.51.100.1 YES manual up up R1#ping 192.0.2.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.0.2.2, timeout is 2 seconds: ..... Success rate is 0 percent (0/5) R1#ping 2001:db8:1::2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 2001:db8:1::2, timeout is 2 seconds: ..... Success rate is 0 percent (0/5)
R1# show running-config interface gigabitEthernet 0/0
Building configuration...
Current configuration : 123 bytes
!
interface GigabitEthernet0/0
ip address 192.168.10.1 255.255.255.0
duplex auto
speed auto
media-type rj45
end
R1# show ipv6 interface brief
GigabitEthernet0/0 [up/up]
unassigned
R2# show running-config interface gigabitEthernet 0/0
Building configuration...
Current configuration : 131 bytes
!
interface GigabitEthernet0/0
ip address 192.168.10.2 255.255.255.0
ipv6 address 2001:db8:1:10::2/64
duplex auto
speed auto
media-type rj45
end
MLS1# show running-config | section interface Vlan10
interface Vlan10
ip address 192.168.10.3 255.255.255.0
ipv6 address 2001:db8:1:10::3/64
!
MLS1# show ipv6 route
IPv6 Routing Table - default - 2 entries
Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP
U - Per-user Static route, M - MIPv6, I - Nemo
O - OSPF, IA - OSPF inter area, N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
D - EIGRP, EX - EIGRP external, ND - Neighbor Discovery
NDp - ND prefix, l - LISP
C 2001:db8:1:10::/64 [0/0]
via Vlan10, directly connected
L 2001:db8:1:10::3/128 [0/0]
via Vlan10, receive
R2# ping 2001:db8:1:10::3
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:db8:1:10::3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5)
R1# ping 2001:db8:1:10::3
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:db8:1:10::3, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
R1# ping 2001:db8:1:10::2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:db8:1:10::2, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)R1#show running-config | section interface GigabitEthernet0/0
interface GigabitEthernet0/0
ip address 192.0.2.1 255.255.255.240
ipv6 address 2001:db8:1::/64 eui-64
no shutdown
R2#show running-config | section interface GigabitEthernet0/0
interface GigabitEthernet0/0
ip address 192.0.2.14 255.255.255.240
no ipv6 address
no shutdown
R2#show ip route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
a - application route
+ - replicated route, % - next hop override
Gateway of last resort is not set
C 192.0.2.0/28 is directly connected, GigabitEthernet0/0
R1#show ipv6 interface brief
GigabitEthernet0/0 [up/up]
FE80::/10
2001:DB8:1:0:20C:29FF:FE8C:1234
R2#ping 192.0.2.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.0.2.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
R1#ping 192.0.2.14
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.0.2.14, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
R2#ping 2001:DB8:1:0:20C:29FF:FE8C:1234
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:DB8:1:0:20C:29FF:FE8C:1234, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)R1#show running-config ... interface GigabitEthernet0/0 ip address 192.0.2.1 255.255.255.0 duplex auto speed auto ! interface GigabitEthernet0/1 ip address 198.51.100.1 255.255.255.0 ipv6 address 2001:db8:1::/64 eui-64 duplex auto speed auto ! ip route 0.0.0.0 0.0.0.0 192.0.2.2 ... R2#show running-config ... interface GigabitEthernet0/0 ip address 192.0.2.2 255.255.255.252 duplex auto speed auto ! interface GigabitEthernet0/1 ip address 198.51.100.2 255.255.255.0 ipv6 address 2001:db8:2::1/64 duplex auto speed auto ! ... PC1: IP 198.51.100.10/24, gateway 198.51.100.1 PC2: IP 198.51.100.20/24, gateway 198.51.100.2
R1#show running-config | section interface
interface GigabitEthernet0/0
ip address 10.0.0.1 255.255.255.0
no shutdown
!
interface GigabitEthernet0/1
ip address 192.168.1.1 255.255.255.0
ipv6 address 2001:db8:1::/64 eui-64
no shutdown
!
interface Loopback0
ip address 203.0.113.1 255.255.255.255
!
R1#show ip route
Codes: C - connected, L - local
10.0.0.0/8 is variably subnetted, 2 subnets
C 10.0.0.0/24 is directly connected, GigabitEthernet0/0
L 10.0.0.1/32 is directly connected, GigabitEthernet0/0
192.168.1.0/24 is variably subnetted, 2 subnets
C 192.168.1.0/24 is directly connected, GigabitEthernet0/1
L 192.168.1.1/32 is directly connected, GigabitEthernet0/1
203.0.113.1/32 is directly connected, Loopback0
R2#show running-config | section interface
interface GigabitEthernet0/0
ip address 10.0.0.2 255.255.255.252
no shutdown
!
interface GigabitEthernet0/1
ip address 192.168.2.1 255.255.255.0
ipv6 address 2001:db8:2::1/64
no shutdown
!
interface Loopback0
ip address 198.51.100.1 255.255.255.255
!
R2#show ip route
Codes: C - connected, L - local
10.0.0.0/30 is subnetted, 1 subnets
C 10.0.0.0/30 is directly connected, GigabitEthernet0/0
L 10.0.0.2/32 is directly connected, GigabitEthernet0/0
192.168.2.0/24 is variably subnetted, 2 subnets
C 192.168.2.0/24 is directly connected, GigabitEthernet0/1
L 192.168.2.1/32 is directly connected, GigabitEthernet0/1
198.51.100.1/32 is directly connected, Loopback0R1# show running-config Building configuration... Current configuration : 1250 bytes ! hostname R1 ! interface GigabitEthernet0/0 ip address 192.0.2.1 255.255.255.252 no shutdown ! interface GigabitEthernet0/1 ipv6 address 2001:db8:1::1/64 no shutdown ! ip route 0.0.0.0 0.0.0.0 192.0.2.2 ! end R1# show ip interface brief Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0 192.0.2.1 YES manual up up GigabitEthernet0/1 unassigned YES manual up up R1# show ipv6 interface brief GigabitEthernet0/0 [unassigned] GigabitEthernet0/1 [2001:db8:1::1]
R1# show running-config | section interface interface GigabitEthernet0/0 ip address 203.0.113.1 255.255.255.0 duplex auto speed auto ! interface GigabitEthernet0/1 ip address 192.168.1.1 255.255.255.0 duplex auto speed auto ! R1# show ip interface brief Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0 203.0.113.1 YES manual up up GigabitEthernet0/1 192.168.1.1 YES manual up up R1# show ipv6 interface brief GigabitEthernet0/0 [unassigned] GigabitEthernet0/1 [unassigned] R1# ping 203.0.113.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 203.0.113.2, timeout is 2 seconds: ..... Success rate is 0 percent (0/5) R1# ping 2001:db8:1::2 % Unrecognized host or address, or protocol not running
R1#show running-config | section interface interface GigabitEthernet0/0 ip address 198.51.100.1 255.255.255.0 no shutdown ! interface GigabitEthernet0/1 ip address 203.0.113.1 255.255.255.0 no shutdown ! interface GigabitEthernet0/2 no ip address shutdown ! R1#show ip interface brief Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0 198.51.100.1 YES manual up up GigabitEthernet0/1 203.0.113.1 YES manual up up GigabitEthernet0/2 unassigned YES manual administratively down down R1#ping 198.51.100.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 198.51.100.2, timeout is 2 seconds: ..... Success rate is 0 percent (0/5) R1#ping 203.0.113.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 203.0.113.2, timeout is 2 seconds: ..... Success rate is 0 percent (0/5) R1#show ipv6 interface brief GigabitEthernet0/0 [administratively down/down] GigabitEthernet0/1 [administratively down/down] Note: R2 is on subnet 198.51.100.0/30, MLS1 is on subnet 203.0.113.0/30. Both R2 and MLS1 have correct IPs and are reachable via their respective subnets.
=== WLC Configuration (Partial) === WLAN ID: 1 Profile Name: CorpSecure SSID: CorpSecure Status: Enabled Security: WPA2-PSK (AES) PSK Passphrase: Cisco123! VLAN: 20 Interface: VLAN20 Broadcast SSID: Disabled === Interface Configuration === Management Interface: IP Address: 192.168.1.10/24 VLAN: 10 Default Gateway: 192.168.1.1 === Show summary (from CLI) === (Cisco Controller) >show wlan summary Number of WLANs.................................. 1 WLAN ID WLAN Profile Name / SSID Status Interface ------- ------------------------------------ ------- --------- 1 CorpSecure / CorpSecure Enabled VLAN20 (Cisco Controller) >show client summary Number of Clients................................ 0 (Cisco Controller) >show interface detailed management Interface Name................................... management MAC Address...................................... 00:1a:2b:3c:4d:5e IP Address....................................... 192.168.1.10 IP Netmask....................................... 255.255.255.0 Default Router................................... 192.168.1.1 VLAN............................................ 10 (Cisco Controller) >show interface detailed vlan20 Interface Name................................... vlan20 MAC Address...................................... 00:1a:2b:3c:4d:5f IP Address....................................... 10.0.20.1 IP Netmask....................................... 255.255.255.0 Default Router................................... 10.0.20.254 VLAN............................................ 20
WLC Configuration (partial) interface Management ip address 192.168.1.10 255.255.255.0 no shutdown ! wlan CorpNet 1 CorpNet ssid CorpNet security wpa3-sae security wpa akm sae security wpa psk ascii 7 1234567890abcdef no security wpa2 no security wpa no security wpa3-sae ! interface wlan 1 vlan 100 ! wlan enable 1 ! wlan ssid CorpNet broadcast-ssid disable ! ! End of configuration
WLC Configuration (partial): (Cisco Controller) >show wlan summary Number of WLANs.................................. 1 WLAN ID WLAN Profile Name / SSID Status Interface ------- ----------------------------- ------ --------- 1 CorpNet / CorpNet Enabled management (Cisco Controller) >show wlan 1 WLAN Profile Name.................................. CorpNet SSID................................................ CorpNet Status............................................. Enabled Security Policies.................................... WPA2+WPA3 ... Broadcast SSID...................................... Disabled ... (Cisco Controller) >show interface summary Interface Name Port VLAN Id IP Address Type Mobility ------------------------------------ ---- ------- --------------- ------- ------- management LAG 1 192.168.1.100 Static Local CorpNet_VLAN LAG 10 10.10.10.1 Static Local (Cisco Controller) >show client summary Number of Clients................................... 0
WLC-1# show wlan summary Number of WLANs.................................. 2 WLAN ID WLAN Profile Name / SSID Status Interface Name ------- ------------------------------ ------- ----------------- 1 CorporateNet / CorpNet Enabled management 2 GuestNet / Guest Enabled guest WLC-1# show wlan 2 WLAN Profile Name................................ GuestNet SSID................................................ Guest Status............................................. Enabled Security Policies................................... [WPA2][Auth(802.1X)] ... WLC-1# show interface summary Interface Name Port VLAN IP Address Type ---------------------- ------ ------- --------------- ----- management LAG 1 192.168.1.100 Static corporate LAG 10 10.10.10.1 Static guest LAG 20 172.16.20.1 Static WLC-1# show wlan 1 security WLAN ID 1 (CorporateNet): WPA2....................... Enabled WPA3....................... Disabled Auth Key Management........ 802.1X WLC-1# show wlan 2 security WLAN ID 2 (GuestNet): WPA2....................... Enabled WPA3....................... Disabled Auth Key Management........ PSK WLC-1# show wlan 2 advanced WLAN ID 2 (GuestNet): Broadcast SSID............. Disabled P2P Blocking Action........ Disabled ...
WLC-1# show wlan summary Number of WLANs...................... 1 WLAN ID WLAN Profile Name / SSID Status Interface ------- ---------------------------- ------- ---------- 1 CorpNet / CorpNet Enabled VLAN100 WLC-1# show wlan 1 WLAN Profile Name............. CorpNet SSID........................... CorpNet Status......................... Enabled Security WPA3......................... Enabled WPA2......................... Disabled AES........................... Enabled PSK........................... (configured) PMF.......................... Required Interface...................... VLAN100 Broadcast SSID................. Enabled WLC-1# show interface summary Interface Name Port VLAN IP Address Type --------------- ------ ------ -------------- ---- management LAG 10 10.10.10.10 Static ap-manager LAG 10 10.10.10.10 Static virtual N/A N/A 1.1.1.1 Static WLC-1# show management summary HTTP Access............. Enabled HTTPS Access............ Enabled Allowed Subnets......... 0.0.0.0/0
WLC-1# show running-config ! hostname WLC-1 ! interface GigabitEthernet0/0 ip address 192.168.1.10 255.255.255.0 ! interface GigabitEthernet0/1 ip address 10.0.0.1 255.255.255.252 ! interface GigabitEthernet0/2 ip address 10.0.100.1 255.255.255.0 ! wireless management interface GigabitEthernet0/0 ! wlan CorpSecure 1 CorpSecure ssid CorpSecure security wpa psk ascii 7 1234567890 no security wpa aes-ccmp security wpa2 ciphers aes security wpa2 psk ascii 7 1234567890 no shutdown ! wireless ap 1 country US ! wireless client vlan 100 !
WLC-1# show wlan summary Number of WLANs.................................. 1 WLAN ID WLAN Profile Name / SSID Status Interface ------- ----------------------------- -------- ---------- 1 CorpNet / CorpNet Disabled management WLC-1# show wlan 1 WLAN Profile Name........... CorpNet SSID........................ CorpNet Status...................... Disabled Security Policies........... WPA3 Broadcast SSID.............. Disabled Interface................... management VLAN Tagging................ Disabled WLC-1# show interface summary Interface Name Port Vlan Id IP Address Type ----------------- ------ ------- --------------- ---------- management LAG 1 192.168.1.10 Static WLC-1# show running-config | include https (config)# no ip http secure-server
WLC# show wlan summary Number of WLANs.................................. 3 WLAN ID WLAN Profile Name / SSID Status Interface ------- ------------------------------------ -------- ---------- 1 Corporate / CorpNet Enabled management 2 Guest / GuestNet Enabled guest 3 IoT / IoTSensors Disabled iot WLC# show wlan 2 WLAN Profile Name ........................... Guest SSID ......................................... GuestNet Status ...................................... Enabled Security Policies: WPA3 ...................................... Enabled WPA3 Transition Mode ...................... Disabled WPA3 PMF (Protected Management Frames) ... Required Interface ................................... guest Broadcast SSID .............................. Disabled WLC# show interface detailed guest Interface Name .............................. guest VLAN ........................................ 200 IP Address .................................. 192.168.20.1 Subnet Mask ................................. 255.255.255.0 WLC# ping 192.168.20.100 !!!!! Success rate is 100 percent (5/5) WLC# show client summary Client MAC AP Name WLAN/SSID State ---------------- ----------- ----------------- ---------- aaaa.bbbb.cccc AP-1 GuestNet Associated 1111.2222.3333 AP-1 GuestNet Associated
Current running-config (partial): ! wlan CorpNet 1 CorpNet no broadcast-ssid no security wpa akm dot1x no security wpa wpa2 ciphers aes security wpa wpa2 security wpa psk set-ccmp 0 7 1234567890 no shutdown ! interface vlan 20 ip address 192.168.20.1 255.255.255.0 ! interface vlan 100 ip address 192.168.100.1 255.255.255.0 ! wireless tag policy default-policy vlan 20 !
WLC# show wlan summary WLAN ID Type SSID Status Interface 1 WPA3-Personal SecureCorp Enabled corp_vlan WLC# show wlan 1 WLAN ID..................................1 SSID.....................................SecureCorp Status...................................Enabled Security Policy..........................WPA3-Personal PSK (ASCII)..............................Cisco123 Broadcast SSID...........................Disabled Interface................................corp_vlan Radio Policy.............................5 GHz only WLC# show interface summary Interface Name VLAN IP Address Type corp_vlan 100 192.168.100.1/24 Dynamic WLC# show client summary MAC Address SSID Status (empty — no clients associated) WLC# show ap summary AP Name IP Address Slot Status AP-Office 192.168.10.50 1 Enabled
SW1# show running-config | section interface Vlan10
interface Vlan10
ip address 192.168.10.1 255.255.255.0
no ip redirects
no ip unreachables
no ip proxy-arp
!
SW1# show ip interface brief
Interface IP-Address OK? Method Status Protocol
Vlan1 unassigned YES unset administratively down down
Vlan10 192.168.10.1 YES manual up up
GigabitEthernet0/0 unassigned YES unset up up
GigabitEthernet0/1 unassigned YES unset up up
GigabitEthernet0/2 unassigned YES unset up up
SW1# show ip route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route
Gateway of last resort is not set
192.168.10.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.10.0/24 is directly connected, Vlan10
L 192.168.10.1/32 is directly connected, Vlan10
SW1#PC> ipconfig Windows IP Configuration Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : IPv4 Address. . . . . . . . . . . : 169.254.10.55 Subnet Mask . . . . . . . . . . . : 255.255.0.0 Default Gateway . . . . . . . . . : 0.0.0.0 R1# show ip interface brief Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0 192.168.1.1 YES manual up up GigabitEthernet0/1 10.0.0.1 YES manual up up GigabitEthernet0/2 unassigned YES unset down down R1# show running-config | section dhcp ip dhcp excluded-address 192.168.1.1 192.168.1.10 ! ip dhcp pool LAN network 192.168.1.0 255.255.255.0 default-router 192.168.1.254 dns-server 8.8.8.8 R1# show running-config interface GigabitEthernet0/0 interface GigabitEthernet0/0 ip address 192.168.1.1 255.255.255.0 no shutdown !
PC1 ipconfig output: Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : example.local IPv4 Address. . . . . . . . . . . : 192.168.1.100 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.1.1 Ping results from PC1: C:\>ping 192.168.1.1 Reply from 192.168.1.1: bytes=32 time<1ms TTL=128 C:\>ping 8.8.8.8 Reply from 192.168.1.1: Destination host unreachable. C:\>ping www.courseiva.com Ping request could not find host www.courseiva.com. Please check the name and try again. SW1 running-config (partial): hostname SW1 ! vlan 10 name CLIENT_VLAN ! interface Vlan10 ip address 192.168.1.1 255.255.255.0 no shutdown ! ip route 0.0.0.0 0.0.0.0 203.0.113.1 ! interface GigabitEthernet0/1 switchport mode access switchport access vlan 10 spanning-tree portfast ! interface GigabitEthernet0/2 no switchport ip address 203.0.113.2 255.255.255.252 !
R1# show running-config | section dhcp ip dhcp excluded-address 192.168.1.1 192.168.1.10 ip dhcp pool HOME network 192.168.1.0 255.255.255.0 default-router 192.168.1.1 dns-server 8.8.8.8 lease 7 R1# show ip interface brief Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0 192.168.1.1 YES NVRAM up up GigabitEthernet0/1 10.0.0.1 YES NVRAM up up Client ipconfig output: Ethernet adapter Wi-Fi: Connection-specific DNS Suffix . : IPv4 Address. . . . . . . . . . . : 169.254.123.45 Subnet Mask . . . . . . . . . . . : 255.255.0.0 Default Gateway . . . . . . . . . :
PC1 ipconfig output:
Ethernet adapter Ethernet0:
Connection-specific DNS Suffix . :
IPv4 Address. . . . . . . . . . . : 10.1.10.100
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 10.1.10.1
DNS Servers . . . . . . . . . . . : 8.8.8.8
R1# show running-config | section interface GigabitEthernet0/0.10
interface GigabitEthernet0/0.10
encapsulation dot1Q 10
ip address 10.1.10.1 255.255.255.0
R1# show ip route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route
Gateway of last resort is not set
10.0.0.0/24 is subnetted, 1 subnets
C 10.1.10.0/24 is directly connected, GigabitEthernet0/0.10
R1# ping 8.8.8.8
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 8.8.8.8, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)PC-A ipconfig output: Ethernet adapter Ethernet0: Connection-specific DNS Suffix . : example.local IPv4 Address. . . . . . . . . . . : 169.254.23.45 Subnet Mask . . . . . . . . . . . : 255.255.0.0 Default Gateway . . . . . . . . . : SW1# show interfaces vlan 10 Vlan10 is up, line protocol is up Internet address is 192.168.10.2/24 R1# show ip interface brief Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0/0 192.168.10.1 YES manual up up GigabitEthernet0/0/1 203.0.113.2 YES manual up up R1# show running-config | section interface GigabitEthernet0/0/0 interface GigabitEthernet0/0/0 ip address 192.168.10.1 255.255.255.0 duplex auto speed auto R1# show running-config | include dhcp ip dhcp excluded-address 192.168.10.1 192.168.10.10 ip dhcp pool VLAN10_POOL network 192.168.10.0 255.255.255.0 default-router 192.168.10.1 dns-server 8.8.8.8 SW1# show running-config | include dhcp ! No DHCP configuration on SW1 PC-A ping 192.168.10.1 Pinging 192.168.10.1 with 32 bytes of data: Reply from 169.254.23.45: Destination host unreachable. PC-A ping 192.168.10.2 Pinging 192.168.10.2 with 32 bytes of data: Reply from 169.254.23.45: Destination host unreachable.
R1# show running-config | section interface GigabitEthernet0/0
interface GigabitEthernet0/0
no ip address
duplex auto
speed auto
!
interface GigabitEthernet0/0.10
encapsulation dot1Q 10
ip address 192.168.10.1 255.255.255.0
!
R1# show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route
Gateway of last resort is not set
C 192.168.10.0/24 is directly connected, GigabitEthernet0/0.10
PC1> ipconfig
Windows IP Configuration
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
IPv4 Address. . . . . . . . . . . : 192.168.10.50
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.10.1
PC1> ping 192.168.10.1
Pinging 192.168.10.1 with 32 bytes of data:
Reply from 192.168.10.50: Destination host unreachable.
Reply from 192.168.10.50: Destination host unreachable.
Reply from 192.168.10.50: Destination host unreachable.
Reply from 192.168.10.50: Destination host unreachable.
Ping statistics for 192.168.10.1:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),! R1 running-config (partial)
hostname R1
!
interface GigabitEthernet0/0
ip address 203.0.113.1 255.255.255.252
no shutdown
!
interface GigabitEthernet0/1
ip address 192.168.1.1 255.255.255.0
no shutdown
!
ip route 0.0.0.0 0.0.0.0 203.0.113.2
!
! PC1 ipconfig output (from PC1)
Connection-specific DNS Suffix . : example.com
IPv4 Address. . . . . . . . . . . : 192.168.1.10
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 192.168.1.1
! Ping results from PC1:
ping 192.168.1.1 -> success
ping 203.0.113.1 -> success
ping 203.0.113.2 -> success
ping 8.8.8.8 -> Request timed out.
! show ip route on R1 (relevant lines)
S* 0.0.0.0/0 [1/0] via 203.0.113.2
192.168.1.0/24 is directly connected, GigabitEthernet0/1
203.0.113.0/30 is directly connected, GigabitEthernet0/0PC1 ipconfig output:
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . : example.local
IPv4 Address. . . . . . . . . . . : 192.168.1.10
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
R1# show ip interface brief
Interface IP-Address OK? Method Status Protocol
GigabitEthernet0/0 203.0.113.2 YES NVRAM up up
GigabitEthernet0/1 192.168.1.1 YES NVRAM up up
R1# show running-config | section interface GigabitEthernet0/1
interface GigabitEthernet0/1
ip address 192.168.1.1 255.255.255.0
no shutdown
R1# ping 203.0.113.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 203.0.113.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5)
PC1> ping 203.0.113.1
Pinging 203.0.113.1 with 32 bytes of data:
Reply from 192.168.1.1: Destination host unreachable.
Reply from 192.168.1.1: Destination host unreachable.
Reply from 192.168.1.1: Destination host unreachable.
Reply from 192.168.1.1: Destination host unreachable.
Ping statistics for 203.0.113.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss)--- Client PC (ipconfig /all) ---
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . : example.local
IPv4 Address. . . . . . . . . . . : 169.254.10.25
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . : 0.0.0.0
DHCP Server . . . . . . . . . . . : 192.168.10.1
DNS Servers . . . . . . . . . . . : 192.168.10.1
--- R1 (show ip interface brief) ---
Interface IP-Address OK? Method Status Protocol
GigabitEthernet0/0/0 192.168.10.1 YES NVRAM up up
GigabitEthernet0/0/1 203.0.113.2 YES NVRAM up up
--- R1 (show running-config | section interface) ---
interface GigabitEthernet0/0/0
description LAN
ip address 192.168.10.1 255.255.255.0
no shutdown
!
interface GigabitEthernet0/0/1
description WAN
ip address 203.0.113.2 255.255.255.252
no shutdown
!
--- R1 (show ip route) ---
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route
Gateway of last resort is not set
C 192.168.10.0/24 is directly connected, GigabitEthernet0/0/0
C 203.0.113.0/30 is directly connected, GigabitEthernet0/0/1You are troubleshooting a PC connected to switch SW1. The PC cannot access the internet. SW1 is connected to router R1 via port G0/1. R1 provides default gateway and DHCP services. Analyze the provided show output and fix the connectivity issue so that the PC can ping 8.8.8.8.
=== Show output from R1 === <pre>
R1# show ip interface brief Interface IP-Address OK? Method Status Protocol
GigabitEthernet0/0 unassigned YES manual administratively down down GigabitEthernet0/1 10.0.0.1 YES NVRAM up up </pre>
=== Show output from PC === <pre>
C:\> ipconfig
Ethernet adapter Ethernet0: Connection-specific DNS Suffix . : IPv4 Address. . . . . . . . . . : 169.254.123.45 Subnet Mask . . . . . . . . . . : 255.255.0.0 Default Gateway . . . . . . . . : </pre>
=== Show output from SW1 === <pre>
SW1# show vlan brief VLAN Name Status Ports
---- -------------------------------- --------- ------------------------------- 1 default active Gi0/1, Gi0/2, Gi0/3 </pre>
PC1> ipconfig
Windows IP Configuration
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . : example.local
Link-local IPv6 Address . . . . . : fe80::1a2b:3c4d:5e6f:7a8b%11
IPv4 Address. . . . . . . . . . . : 169.254.123.45
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
PC1> ping 8.8.8.8
Pinging 8.8.8.8 with 32 bytes of data:
Reply from 169.254.123.45: Destination host unreachable.
Reply from 169.254.123.45: Destination host unreachable.
R1# show ip dhcp binding
Bindings from all pools not associated with VRF:
IP address Client-ID/ Lease expiration Type
Hardware address/
User name
192.168.1.10 0100.1111.2222.3333 Mar 01 2025 12:00 PM Automatic
R1# show ip dhcp pool
Pool LANPOOL:
Utilization mark (high/low) : 100 / 0
Subnet size (first/next) : 0 / 0
Total addresses : 254
Leased addresses : 1
Pending event : none
1 network(s) exist
Network number : 192.168.1.0
Mask : 255.255.255.0
Default router : 192.168.1.1
DNS server : 8.8.8.8
Lease time (min) : 1440
SW1# show vlan brief
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active G0/1, G0/2
SW1# show interfaces g0/2 switchport
Name: G0/2
Switchport: Enabled
Administrative Mode: static access
Operational Mode: static access
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: native
Negotiation of Trunking: Off
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Administrative Native VLAN tagging: enabled
Voice VLAN: noneR1# show interfaces gigabitEthernet 0/0
GigabitEthernet0/0 is down, line protocol is down
Hardware is Gigabit Ethernet, address is 0011.2233.4455 (bia 0011.2233.4455)
Internet address is 10.0.0.1/30
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Auto-negotiation is turned on
Full-duplex, 1000Mb/s, link type is auto, media type is SFP
output flow-control is unsupported, input flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
R1# show interfaces gigabitEthernet 0/0 transceiver
Diagnostic Monitoring Information not available
R1# show run interface gigabitEthernet 0/0
Building configuration...
Current configuration : 120 bytes
!
interface GigabitEthernet0/0
ip address 10.0.0.1 255.255.255.252
speed auto
duplex auto
media-type sfp
end
R1# show interfaces gigabitEthernet 0/0 capabilities
GigabitEthernet0/0
Model: WS-C2960X-48TS-L
Type: 1000BaseLX/LH
Speed: 1000
Duplex: Full
Trunk encap. type: 802.1Q
Trunk mode: on
auto-negotiation: on
Flowcontrol: rx off,tx off
Members: 1
Link status: downR1# show interfaces gigabitEthernet 0/1
GigabitEthernet0/1 is down, line protocol is down
Hardware is GigabitEthernet, address is aabb.cc00.0101 (bia aabb.cc00.0101)
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Auto-duplex, Auto-speed, media type is SFP
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
R1# show interfaces gigabitEthernet 0/1 transceiver
Diagnostic Monitoring: Not supported
R1# show running-config interface gigabitEthernet 0/1
Building configuration...
Current configuration : 79 bytes
!
interface GigabitEthernet0/1
no ip address
shutdown
speed 1000
duplex full
endR1#show interfaces gigabitEthernet 0/0
GigabitEthernet0/0 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 0011.2233.4455 (bia 0011.2233.4455)
Internet address is 10.0.0.1/30
MTU 1500 bytes, BW 1000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
R1#show interfaces gigabitEthernet 0/0 status
Port Name Status Vlan Duplex Speed Type
Gi0/0 notconnect 1 auto auto 10/100/1000BaseTX
R1#show interfaces gigabitEthernet 0/0 | include duplex|speed
Full-duplex, 1000Mb/s
R1#show running-config interface gigabitEthernet 0/0
Building configuration...
Current configuration : 45 bytes
!
interface GigabitEthernet0/0
no ip address
shutdown
end
R1#show interfaces gigabitEthernet 0/0 | include media type
media type is 10/100/1000BaseTX
R1#show interfaces gigabitEthernet 0/0 transceiver
Diagnostic Monitoring is not supported
R1#show interfaces gigabitEthernet 0/0 | include errors|CRC|collision
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 output errors, 0 collisions, 0 interface resetsR1# show interfaces gigabitethernet 0/0
GigabitEthernet0/0 is up, line protocol is down
Hardware is GigabitEthernet, address is aabb.cc00.0100 (bia aabb.cc00.0100)
Description: Link to SW1
Internet address is 192.0.2.1/30
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Auto-duplex, Auto-speed
input errors: 0 CRC, 0 frame, 0 overrun, 0 ignored
output errors: 0 collisions, 0 interface resets
unknown protocol drops: 0
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
R1# show interfaces gigabitethernet 0/0 transceiver
GigabitEthernet0/0: SFP is not present
R1# show running-config interface gigabitethernet 0/0
Building configuration...
Current configuration : 60 bytes
!
interface GigabitEthernet0/0
description Link to SW1
ip address 192.0.2.1 255.255.255.252
no shutdown
end
R1# show ip interface brief
Interface IP-Address OK? Method Status Protocol
GigabitEthernet0/0 192.0.2.1 YES manual up down
GigabitEthernet0/1 unassigned YES unset administratively down downR1# show interfaces gigabitethernet 0/0
GigabitEthernet0/0 is down, line protocol is down (notconnect)
Hardware is GigabitEthernet, address is aaaa.bbbb.cccc (bia aaaa.bbbb.cccc)
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is SFP
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
R1# show running-config interface gigabitethernet 0/0
Building configuration...
Current configuration : 85 bytes
!
interface GigabitEthernet0/0
ip address 10.0.0.1 255.255.255.252
speed 100
duplex full
negotiation auto
endR1# show running-config interface gigabitEthernet 0/0
Building configuration...
Current configuration : 105 bytes
!
interface GigabitEthernet0/0
ip address 10.0.0.1 255.255.255.252
duplex full
speed 1000
negotiation auto
end
R1# show interfaces gigabitEthernet 0/0
GigabitEthernet0/0 is down, line protocol is down (notconnect)
Hardware is ISR4331, address is aaaa.bbbb.cccc (bia aaaa.bbbb.cccc)
Description: Link to R2
Internet address is 10.0.0.1/30
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, link type is auto, media type is SX
output flow-control is unsupported, input flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
R1# show interfaces gigabitEthernet 0/0 transceiver properties
Diagnostic Monitoring is not available
R1# show interfaces gigabitEthernet 0/0 transceiver detail
GigabitEthernet0/0: transceiver module is SFP, type is SX
Name: CISCO-AVAGO
Part number: FTLC1151RDPL-C1
Revision: A0
Serial number: FNS1234567
Nominal bitrate: 1000 Mbit/sec
Wavelength: 850 nm
Distance: 550 m
Link length supported for 50/125µm OM3 fiber: 550 m
Link length supported for 62.5/125µm OM2 fiber: 300 m
Temperature: 35 degrees C
Voltage: 3.3 V
Current: 8.0 mA
Optical output power: -3.0 dBm
Optical input power: -40.0 dBm (low, indicates no light from remote)
Laser bias current: 8.0 mA
Laser temperature: 35 degrees C
R1# show logging | include GigabitEthernet0/0
*Mar 1 00:01:23.456: %LINK-3-UPDOWN: Interface GigabitEthernet0/0, changed state to down
*Mar 1 00:01:24.456: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0, changed state to down
*Mar 1 00:02:10.789: %PHY-4-UNSUPPORTED_TRANSCEIVER: Unsupported or incompatible transceiver detected in interface GigabitEthernet0/0
*Mar 1 00:02:15.123: %PHY-4-UNSUPPORTED_TRANSCEIVER: Unsupported or incompatible transceiver detected in interface GigabitEthernet0/0
*Mar 1 00:02:20.456: %PHY-4-UNSUPPORTED_TRANSCEIVER: Unsupported or incompatible transceiver detected in interface GigabitEthernet0/0R1# show interfaces gigabitethernet 0/0
GigabitEthernet0/0 is up, line protocol is up
Hardware is GigabitEthernet, address is aabb.cc00.0100 (bia aabb.cc00.0100)
Internet address is 192.0.2.1/30
MTU 1500 bytes, BW 10000 Kbit/sec, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 10Mb/s, 100BaseTX/FX
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:05, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 1000 bits/sec, 1 packets/sec
5 minute output rate 1000 bits/sec, 1 packets/sec
1020 packets input, 100200 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
1010 packets output, 99000 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
R1# show interfaces gigabitethernet 0/0 transceiver
Diagnostic Monitoring Information:
Temperature: 45 C
Voltage: 3.3 V
Current: 10 mA
Transmit Power: -3.1 dBm
Receive Power: -12.5 dBm
High Alarm: RX power low
Module Type: SFP
Connector: LC
Wavelength: 1310 nm
Distance: 10 km
Media: SMF
R1# show running-config interface gigabitethernet 0/0
Building configuration...
Current configuration : 120 bytes
!
interface GigabitEthernet0/0
ip address 192.0.2.1 255.255.255.252
duplex half
speed 10
endR1# show interfaces GigabitEthernet0/0
GigabitEthernet0/0 is down, line protocol is down
Hardware is Gigabit Ethernet, address is aabb.cc00.0100 (bia aabb.cc00.0100)
Internet address is 10.0.0.1/30
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Auto-duplex, Auto-speed
input errors: 0, CRC: 0, frame: 0, overrun: 0, ignored: 0
output errors: 0, collisions: 0, interface resets: 0
Unknown SFP type
R1# show interfaces GigabitEthernet0/0 status
Port Name Status Vlan Duplex Speed Type
Gi0/0 notconnect 1 auto auto 10/100/1000BaseTX
R1# show running-config interface GigabitEthernet0/0
Building configuration...
Current configuration : 66 bytes
!
interface GigabitEthernet0/0
ip address 10.0.0.1 255.255.255.252
no shutdown
end
R2# show running-config interface GigabitEthernet0/0
Building configuration...
Current configuration : 88 bytes
!
interface GigabitEthernet0/0
ip address 10.0.0.2 255.255.255.252
speed 1000
duplex full
no shutdown
endR1# show interfaces gigabitEthernet 0/0
GigabitEthernet0/0 is up, line protocol is up
Hardware is ISR4331-2x1GE, address is aabb.cc00.0100 (bia aabb.cc00.0100)
Internet address is 10.1.1.1/30
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is RJ45
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
12345 packets input, 1234567 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
3456 input errors, 3456 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
12345 packets output, 1234567 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
R1# show interfaces gigabitEthernet 0/0 status
Port Name Status Vlan Duplex Speed Type
Gi0/0 connected 1 Full 100 10/100/1000BaseTX
R1# show running-config interface gigabitEthernet 0/0
Building configuration...
Current configuration : 90 bytes
!
interface GigabitEthernet0/0
ip address 10.1.1.1 255.255.255.252
duplex half
speed 100
endR1# show interfaces GigabitEthernet0/0
GigabitEthernet0/0 is up, line protocol is up
Hardware is Gigabit Ethernet, address is aaaa.bbbb.cccc (bia aaaa.bbbb.cccc)
Internet address is 192.0.2.1/30
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, link type is auto, media type is SFP
output flow-control is unsupported, input flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:02, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 2000 bits/sec, 2 packets/sec
5 minute output rate 1000 bits/sec, 1 packets/sec
500 packets input, 45000 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
150 input errors, 150 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
400 packets output, 40000 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
R1# show running-config interface GigabitEthernet0/0
Building configuration...
Current configuration : 120 bytes
!
interface GigabitEthernet0/0
ip address 192.0.2.1 255.255.255.252
duplex auto
speed auto
media-type sfp
negotiation auto
end
R1# show interfaces transceiver
Interface Vendor Type Serial Part No. Distance
Gi0/0 Cisco SFP-GE-SX ABC123 SFP-GE-SX 550m
R2 (via show): R2's Gi0/0 is configured with: speed 1000, duplex fullDrag a concept onto its matching description — or click a concept then click the description.
Displays optical transceiver diagnostic information including temperature and Tx/Rx power
Shows Ethernet physical layer diagnostics such as cable length, MDI/MDIX, and pair status
10 Gigabit Ethernet short-reach multimode fiber transceiver for 850 nm up to 300 m
Copper twisted-pair cabling standard supporting 10GBASE-T up to 100 meters
Small form-factor duplex fiber optic connector used with SFP/SFP+ modules
R1# show interfaces GigabitEthernet0/0
GigabitEthernet0/0 is up, line protocol is up (connected)
Hardware is iGbE, address is 0011.2233.4455 (bia 0011.2233.4455)
Internet address is 192.168.100.1/24
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:01, output 00:00:01, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 1000 bits/sec, 2 packets/sec
5 minute output rate 5000 bits/sec, 3 packets/sec
52345 packets input, 10243456 bytes, 0 no buffer
Received 0 broadcasts (0 multicasts)
0 runts, 0 giants, 0 throttles
5231 input errors, 5200 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
245678 packets output, 54839203 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped outR1# show interfaces Serial0/0/0
Serial0/0/0 is up, line protocol is down
Hardware is GT96K Serial
Internet address is 192.168.1.1/30
MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
DCE, no clock rate set
Last input never, output never, output hang never
Last clearing of "show interface" counters neverR1# show ip interface GigabitEthernet0/0 GigabitEthernet0/0 is up, line protocol is up Internet address is 192.168.1.2/24 Broadcast address is 255.255.255.255 MTU is 1500 bytes Helper address is not set Outgoing access list is not set Inbound access list is not set Proxy ARP is enabled Local Proxy ARP is disabled Split horizon is enabled ICMP redirects are always sent ICMP unreachables are always sent ICMP mask replies are never sent
R1# show controllers Serial0/0/0 Interface Serial0/0/0 Hardware is PowerQUICC MPC860 DCE V.35, no clock rate idb at 0x81081F80, driver data structure at 0x81086768 scc registers: rx ring entries = 64, tx ring entries = 64 rx ring start = 0x405F20, tx ring start = 0x405F60 buffer size 1524, control block pointer 0x81B00C cable type : V.35 DCE cable no clock rate configured transmitter delay is 0 microseconds
R1# show version Cisco IOS Software, 2800 Software (C2800NM-ADVIPSERVICESK9-M), Version 15.1(4)M10, RELEASE SOFTWARE (fc2) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2016 by Cisco Systems, Inc. Compiled Wed 30-Nov-16 14:46 by prod_rel_team ROM: System Bootstrap, Version 12.4(13r)T11, RELEASE SOFTWARE (fc1) R1 uptime is 2 minutes System returned to ROM by power-on System image file is "flash:c2800nm-advipservicesk9-mz.151-4.M10.bin" Cisco 2811 (revision 53.51) with 253952K/8192K bytes of memory. Processor board ID FCZ1511709Y 2 FastEthernet interfaces 2 Serial interfaces 1 Virtual Private Network (VPN) Module 125440K bytes of ATA CompactFlash (Read/Write) Configuration register is 0x2142
R1# show cdp neighbors detail ------------------------- Device ID: R2 Entry address(es): IP address: 10.1.1.2 Platform: Cisco C2900, Capabilities: Router Interface: GigabitEthernet0/1, Port ID (outgoing port): GigabitEthernet0/0 Holdtime: 140 sec Version: Cisco IOS Software, Version 15.4(3)M3, RELEASE SOFTWARE (fc2) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2015 by Cisco Systems, Inc. Compiled Wed 02-Jul-15 10:45 by prod_rel_team Advertisement Version: 2 Duplex: full Total cdp entries displayed : 1
R1# show ip interface brief Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0 192.168.1.1 YES manual up up GigabitEthernet0/1 unassigned YES unset administratively down down Serial0/0 10.0.0.1 YES manual up up Serial0/1 172.16.1.1 YES manual up down Serial0/2 unassigned YES unset administratively down down Loopback0 1.1.1.1 YES manual up up
R1# show interfaces GigabitEthernet0/0
GigabitEthernet0/0 is up, line protocol is up
Hardware is iGbE, address is 00ab.cd12.3456 (bia 00ab.cd12.3456)
Internet address is 192.168.1.1/24
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Half-duplex, 1000Mb/s, media type is RJ45
input flow-control is off, output flow-control is off
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:01, output 00:00:01, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
12345 packets input, 987654 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
23 input errors, 23 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
5678 packets output, 345678 bytes, 0 underruns
0 output errors, 0 collisions, 17 late collisions, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out