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Juniper MC-LAG with Cisco Access Switch

  • 1.  Juniper MC-LAG with Cisco Access Switch

    Posted 05-07-2023 07:37

    Have 2 x Juniper QFX 5120 switches acting as distributions running MC-LAG with a Cisco 2960/Cisco 3750 access switch. Port channel on the Cisco comes up for about 30 seconds and then fails with the following message:
    May 06 10:50:23.162 EDT: %PM-4-ERR_DISABLE: channel-misconfig error detected on Gi0/11, putting Gi0/11 in err-disable state
    May 06 10:50:23.171 EDT: %PM-4-ERR_DISABLE: channel-misconfig error detected on Gi0/12, putting Gi0/12 in err-disable state

    Submitting configuration and diagram. please help to resolve.



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    Attachment(s)

    txt
    JUNIPER-CORE-SWITCH1.txt   9 KB 1 version
    pdf
    Topology Diagram.pdf   27 KB 1 version
    txt
    Cisco SW-1.txt   746 B 1 version
    txt
    JUNIPER-CORE-SWITCH2.txt   9 KB 1 version
    txt
    Cisco SW-2.txt   551 B 1 version