Refer to the exhibit. The administrator troubleshoots an EtherChannel that keeps moving to err- disabled. Which two actions must be taken to resolve the issue? (Choose two.)

Question

Exhibits

Options

• AReload the switch to force EtherChannel renegotiation
• BEnsure that interfaces Gi1/0/2 and Gi1/0/3 connect to the same neighboring switch.
• CEnsure that the switchport parameters of Port channel1 match the parameters of the port channel
• DEnsure that the corresponding port channel interface on the neighbor switch is named Port-
• EEnsure that the neighbor interfaces of Gi1/0/2 and Gi/0/3 are configured as members of the same

• A
  3% (1)
• B
  5% (2)
• C
  82% (32)
• D
  10% (4)

Explanation

EtherChannel Err-Disabled Troubleshooting

When an EtherChannel moves to err-disabled, it is typically caused by parameter mismatches between the physical interfaces and the port-channel interface, or between the local and remote switch configurations. Option C is correct because all switchport parameters (speed, duplex, VLAN membership, trunk/access mode) on the physical interfaces must match the Port-channel interface - any inconsistency triggers err-disabled. Option E is correct because if Gi1/0/2 and Gi1/0/3 connect to a neighbor switch, their corresponding neighbor interfaces must belong to the same EtherChannel group on that switch; mismatched channel-group assignments across switches cause negotiation failure.

Why the distractors are wrong:

• A – Reloading the switch is a disruptive, unnecessary action and does not fix the underlying configuration mismatch.
• B – Both interfaces should connect to the same neighbor switch, but this is a prerequisite, not a corrective action specific to the err-disabled state described.
• D – The name of the port-channel interface on the neighbor switch is irrelevant; what matters is consistent configuration, not naming conventions.

Memory Tip: Think "Match Locally, Match Remotely" - EtherChannel requires parameter consistency on the port-channel itself (C) and across both switches (E).

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