Question 2mediummultiple choice
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A network engineer runs the following command on Switch SW1:
SW1# show etherchannel summary
Flags: D - down P - bundled in port-channel I - stand-alone s - suspended H - Hot-standby (LACP only) R - Layer3 S - Layer2 U - in use N - not in use, no aggregation f - failed to allocate aggregator
M - not in use, minimum links not met u - unsuitable for bundling w - waiting to be aggregated d - default port
Number of channel-groups in use: 1 Number of aggregators: 1
Group Port-channel Protocol Ports ------+-------------+-----------+-------------------------------------------- 1 Po1(SU) LACP Gi0/0(P) Gi0/1(P) Gi0/2(s) Gi0/3(D)
Based on this output, what can be concluded?
A network engineer runs the following command on Switch SW2:
SW2# show interfaces port-channel 1 etherchannel
Port-channel1 :
Age of the Port-channel = 0d:00h:10m:32s Logical slot/port = 16/1 Number of ports = 2 HotStandby port = null Port state = Port-channel Ag-Inuse Protocol = LACP
Ports in the Port-channel:
Index Load Port EC state No of bits ------+------+------+----------------+---------- 0 00 Gi0/0 Active 4 1 00 Gi0/1 Active 4
Time since last port bundled: 0d:00h:05m:23s Gi0/1
Based on this output, what can be concluded?
A network engineer runs the following command on Switch SW3:
SW3# show etherchannel load-balance
EtherChannel Load-Balancing Configuration: src-dst-ip
EtherChannel Load-Balancing Operational State: src-dst-ip
Based on this output, what can be concluded?
A network engineer runs the following command on Switch SW4:
SW4# show etherchannel 1 detail Channel-group number: 1
Group state = L2
Ports in the group: -------------------
Port: Gi0/0 --------
Port state = Up, In-Bundle Channel group = 1 Mode = Active/PagNego Gcchange = - Port-channel = Po1 GC = 0x00010001 Pseudo port-channel = Po1
Port index = 0 Load = 0x00
Flags: S - Device is sending Slow LACPDUs F - Device is sending Fast LACPDUs A - Device is in active mode. P - Device is in passive mode.
Local information:
LACP port Admin Oper Port Port Port Flags State Priority Key Key Number State Gi0/0 SA bndl 32768 0x1 0x1 0x101 0x3D
Partner information:
LACP port Admin Oper Port Port Port Flags State Priority Key Key Number State Gi0/0 SA bndl 32768 0x1 0x1 0x102 0x3D
Age of the port = 0d:00h:15m:20s
Based on this output, what can be concluded?
A network engineer runs the following command on Switch SW5:
SW5# show running-config | section interface port-channel interface Port-channel1 switchport mode trunk switchport trunk allowed vlan 1-100,200-300
!
interface Port-channel2 switchport mode access switchport access vlan 10
!
SW5# show interfaces trunk
Port Mode Encapsulation Status Native vlan Po1 on 802.1q trunking 1
Port Vlans allowed on trunk Po1 1-100,200-300
Port Vlans allowed and active in management domain Po1 1-100,200-300
Port Vlans in spanning tree forwarding state and not pruned Po1 1-100,200-300
Based on this output, what can be concluded?
A network engineer runs the following command on Switch SW6:
SW6# show etherchannel 3 summary
Flags: D - down P - bundled in port-channel I - stand-alone s - suspended H - Hot-standby (LACP only) R - Layer3 S - Layer2 U - in use N - not in use, no aggregation f - failed to allocate aggregator
M - not in use, minimum links not met u - unsuitable for bundling w - waiting to be aggregated d - default port
Number of channel-groups in use: 1 Number of aggregators: 1
Group Port-channel Protocol Ports ------+-------------+-----------+-------------------------------------------- 3 Po3(RU) PAgP Gi0/0(P) Gi0/1(P) Gi0/2(I)
Based on this output, what can be concluded?
A network engineer runs the following command on Switch SW7:
SW7# show interfaces port-channel 1
Port-channel1 is up, line protocol is up (connected) Hardware is EtherChannel, address is aaaa.bbbb.cccc (bia aaaa.bbbb.cccc) Description: Link to Core Internet address is 192.168.1.1/30 MTU 1500 bytes, BW 2000000 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 unknown 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 500 bits/sec, 1 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 67890 packets output, 9876543 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
Based on this output, what can be concluded?
A network engineer runs the following command on Switch SW8:
SW8# show etherchannel 2 detail | include "Port state|Port: Gi|Partner"
Port: Gi0/0 Port state = Up, In-Bundle Port: Gi0/1 Port state = Up, In-Bundle Port: Gi0/2 Port state = Down, Not-In-Bundle Partner information: Gi0/0: Partner state = bndl Gi0/1: Partner state = bndl Gi0/2: Partner state = down
Based on this output, what can be concluded?
A network engineer runs the following command on Switch SW9:
SW9# show etherchannel 4 port-channel
Port-channels in the group: ---------------------------
Port-channel: Po4 (Primary Aggregator)
Age of the Port-channel = 0d:00h:20m:10s Logical slot/port = 16/4 Number of ports = 3 HotStandby port = null Port state = Port-channel Ag-Inuse Protocol = LACP
Ports in the Port-channel:
Index Load Port EC state No of bits ------+------+------+----------------+---------- 0 00 Gi0/0 Active 4 1 00 Gi0/1 Active 4 2 00 Gi0/2 Standby 4
Time since last port bundled: 0d:00h:15m:00s Gi0/1
Based on this output, what can be concluded?
Consider the following configuration snippet:
interface Port-channel1 switchport mode trunk switchport trunk allowed vlan 10,20,30
!
interface GigabitEthernet0/1 channel-group 1 mode active
!
interface GigabitEthernet0/2 channel-group 1 mode passive
What is the effect of this configuration?
Given the following configuration:
interface Port-channel1 no switchport ip address 192.168.1.1 255.255.255.0
!
interface GigabitEthernet0/1 no switchport channel-group 1 mode on
!
interface GigabitEthernet0/2 no switchport channel-group 1 mode on
Which statement is true about this EtherChannel?
Examine the following configuration:
interface Port-channel1 switchport mode trunk
!
interface GigabitEthernet0/1 switchport mode trunk channel-group 1 mode desirable
!
interface GigabitEthernet0/2 switchport mode access channel-group 1 mode desirable
What is the problem with this configuration?
Consider this configuration:
interface Port-channel1 switchport mode trunk switchport trunk native vlan 999
!
interface GigabitEthernet0/1 switchport mode trunk switchport trunk native vlan 999 channel-group 1 mode active
!
interface GigabitEthernet0/2 switchport mode trunk switchport trunk native vlan 999 channel-group 1 mode active
What is the effect of the 'switchport trunk native vlan 999' command on the EtherChannel?
Given the configuration:
interface Port-channel1 switchport mode trunk switchport trunk allowed vlan 10-20
!
interface GigabitEthernet0/1 switchport mode trunk channel-group 1 mode passive
!
interface GigabitEthernet0/2 switchport mode trunk channel-group 1 mode passive
What is missing for this EtherChannel to form with a neighbor that uses LACP active?
Examine the following configuration:
interface Port-channel1 switchport mode trunk
!
interface GigabitEthernet0/1 switchport mode trunk channel-group 1 mode active spanning-tree portfast
!
interface GigabitEthernet0/2 switchport mode trunk channel-group 1 mode active spanning-tree portfast
What is the effect of the 'spanning-tree portfast' command on the member interfaces of this EtherChannel?
More EtherChannel questions available in the full practice test.
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