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350-401 · Question #1279

350-401 Question #1279: Real Exam Question with Answer & Explanation

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Submitted by lars.no· Mar 6, 2026DOMAIN_LIST_NOT_PROVIDED

Question

Refer to the exhibit. An administrator configures two switches with LACP EtherChannels, but packets are not being exchanged between the switches. What is the reason, and what fixes the issue? S1> enable S1# configure terminal S1(config)# interface port-channel 1 S1(config-if)# ip address 10.1.1.1 255.2 S1(config-if)# interface g2/0/0 S1(config-if)# no ip address S1(config-if)# channel-group 1 mode active S1(config-if)# exit S1(config)# interface g4/0/0 S1(config-if)# no ip address S1(config-if)# channel-group 1 mode active S2> enable S2# configure terminal S2(config)# interface port-channel 1 $2(config-if)# ip address 10.1.1.2 255.255.255.0 S2(config-if)# interface g2/0/0 $2(config-if)# no ip address $2(config-if)# channel-group 1 mode desirable S2(config-if)# exit S2(config)# interface g4/0/0 S2(config-if)# no ip address S2(config-if)# channel-group 1 mode desirable

Options

  • AS1 is configured as PAgP. Change the channel group mode to desirable.
  • BS2 is configured as LACP. Change the channel group mode to passive.
  • CS2 is configured with PAgP. Change the channel group mode to active.
  • DS1 is configured with LACP. Change the channel group mode to on.

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Topics

#EtherChannel#LACP configuration#PAgP configuration#Link aggregation troubleshooting
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