Disabling an EtherChannel with port-channel min-links

200-301 By islever Editorial Last updated

Configure and verify (Layer 2/Layer 3) EtherChannel (LACP)

Short answer

A 'port-channel min-links 2' brings the EtherChannel down when fewer than 2 member links are up, so losing Ge0/0 and Ge0/1 disables it.

Question

Refer to the exhibit. PC1 regularly sends 1800 Mbps of traffic to the server. A network engineer needs to configure the EtherChannel to disable Port Channel 1 between SW1 and SW2 when the Ge0/0 and Ge0/1 ports on SW2 go down. Which configuration must the engineer apply to the switch? - Exhibit: Disabling an EtherChannel with port-channel min-links
  1. SW2# configure terminal - Correct Answer
  2. SW2# configure terminal -
  3. SW2# configure terminal -
  4. SW2# configure terminal -

Key Takeaways

min-links (not max-bundle) is what disables the bundle when links drop below a threshold; max-bundle only caps the number of bundled links.

The 'port-channel min-links' command sets the minimum number of active member links required for the EtherChannel to stay up. Setting it to 2 means the Port-channel is administratively down if both Ge0/0 and Ge0/1 fail, meeting the requirement. (The exported option text was truncated to 'configure terminal -', but the question and Cisco docs confirm A is the min-links command.)

Common mistake: Picking 'lacp max-bundle 2' (a distractor): that limits how many links can be bundled, it does not shut the channel when links fail. The requirement is a minimum-link shutdown.

Expert Analysis

Why the Answer Is Correct

A is correct. Applying 'port-channel min-links 2' under 'interface port-channel 1' requires at least two active member links; when both Ge0/0 and Ge0/1 go down the link count drops below the minimum and the EtherChannel is disabled, exactly as required.

Why the Other Options Are Wrong

The other options are different EtherChannel commands that do not enforce a minimum-link shutdown. Notably 'lacp max-bundle 2' only caps how many links may be bundled — it does not bring the channel down when links fail.

Community Comment Notes

The vote is A (100). Commenters cite 'port-channel min-links 2' and link the Cisco EtherChannel config guide; one notes this is the command that specifies the minimum active interfaces for the LAG. (Source option strings were truncated in the export, but the answer is unambiguous.)

Official Reference

https://learningnetwork.cisco.com/s/ccna-exam-topics

This link opens the official vendor documentation in a new tab.

Community Votes

A
100%

100% of anonymous learners picked answer A. Votes are pick records left by other test-takers — they are not the verified answer.

Discussion 9 contributions

Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.

From public community threads 9

  1. [Removed] 👍 3 Answered A
    A is correct By setting the port-channel min-links to 2, the switch ensures that the port-channel interface will only remain operational if at least 2 physical links in the bundle are active and functioning. If the both 2 links ge0/0 AND ge0/1 on SW2 goes down, the overall link count drops below the configured minimum (2), causing the port-channel to go down as well.
  2. rasadebayor 👍 2
    Option C Option C: lacp max-bundle 2 sets the maximum number of links that can be bundled into port channel 1. This option effectively disables the port channel when only one or no links are available, which aligns with the desired behavior of disabling the channel when both Ge0/0 and Ge0/1 are down
  3. lmmujsi 👍 1 Answered A
    A. SW2# configure terminal - SW2(config)# interface port-channel 1 SW2(config-if)# port-channel min-links 2 This command sets the minimum number of links that must be up in the port-channel for it to stay active to 2. If both ports go down, the EtherChannel will be disabled, which is the desired outcome according to the scenario presented. Please note that the port-channel number should match the actual port-channel being configured, which is 1 according to the exhibit, not 4 as indicated in the answer choices. This is likely a typo in the provided answer options.
  4. ladarius01 👍 1
    According to this documentation, the answer is A. https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9200/software/release/17-2/configuration_guide/lyr2/b_172_lyr2_9200_cg/configuring_etherchannels.html#id_97595
  5. NINJA777 👍 1
    A The port-channel min-links command specifies the minimum number of interfaces that the configuration mode LAG requires to be active
Show 4 more comments
  1. lmmujsi 👍 1
    This is not a CCNA question. This is a CCNP question.
  2. KuyaErik101 👍 1
    please revised my answer, it should be C,
  3. d5c03de 👍 1 Answered A
    A is correct.
  4. KuyaErik101 👍 1 Answered A
    A is correct

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