The correct conclusion is that the port is bundled and the LACP state is synchronized. This is determined by the local and partner state both showing “bndl,” which confirms the port is actively participating in the LACP bundle, while the hexadecimal port state of 0x3D decodes to include the synchronization bit (0x20), indicating the link is fully operational and ready to forward traffic. On the ENCOR 350-401 exam, interpreting the LACP state detail from show etherchannel is a common troubleshooting skill, often tested by presenting a similar output and asking you to identify whether the port is bundled, what the flags (SA for Active/Slow) mean, or whether the partner is misconfigured. A frequent trap is confusing the “bndl” state with the hex value—remember that 0x3D always includes synchronization, collecting, and distributing bits. Memory tip: “3D = 3 bits for Sync, Collect, Distribute” — if you see 0x3D, the link is healthy and bundled.
CCNP EtherChannel Practice Question
This 350-401 practice question tests your understanding of etherchannel. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
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
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The port is bundled and the LACP state is synchronized.
The output shows detailed LACP information for port Gi0/0. The local and partner states are both 'bndl', meaning the port is bundled. The flags 'SA' indicate the port is in active mode and sending slow LACPDUs. The port state '0x3D' is a hexadecimal representation of the LACP state, which includes bits for activity, aggregation, synchronization, collecting, distributing, and defaulted. The correct answer is that the port is actively participating in LACP and is bundled.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
The port is in passive mode and waiting for the partner to initiate.
Why it's wrong here
Flag 'A' indicates active mode, not passive.
✗
The port is sending fast LACPDUs because the flag is 'F'.
Why it's wrong here
The flag is 'S', meaning slow LACPDUs.
✓
The port is bundled and the LACP state is synchronized.
Why this is correct
State 'bndl' and the port state '0x3D' indicate synchronization and bundling.
Related concept
Static NAT maps one inside address to one outside address.
✗
The port is not in use because the load is 0x00.
Why it's wrong here
Load of 0x00 indicates no current traffic, but the port is still bundled and ready.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 350-401 NAT questions on configuration and troubleshooting.
EtherChannel — This question tests EtherChannel — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: The port is bundled and the LACP state is synchronized. — The output shows detailed LACP information for port Gi0/0. The local and partner states are both 'bndl', meaning the port is bundled. The flags 'SA' indicate the port is in active mode and sending slow LACPDUs. The port state '0x3D' is a hexadecimal representation of the LACP state, which includes bits for activity, aggregation, synchronization, collecting, distributing, and defaulted. The correct answer is that the port is actively participating in LACP and is bundled.
What should I do if I get this 350-401 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 350-401 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. 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?
hard
A.All three ports are bundled and forwarding traffic.
✓ B.Gi0/2 is not bundled because the partner is in 'down' state, indicating a physical layer issue.
C.The EtherChannel is using PAgP because the partner state shows 'bndl'.
D.Gi0/2 is in standby mode waiting to become active.
Why B: The filtered output shows that Gi0/0 and Gi0/1 are up and in-bundle, with their partners also in 'bndl' state. Gi0/2 is down and not in-bundle, with its partner also down. This indicates that the physical link on Gi0/2 is down, possibly due to a cable issue or the neighbor port being down. The correct answer is that Gi0/2 is not part of the EtherChannel because the link is down.
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Question Discussion
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