ExtremeSwitching (EXOS)

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LAG Master Config and Master Current are different

  • 1.  LAG Master Config and Master Current are different

    Posted 03-21-2018 09:37
    Hi

    Have a pair of switches joined together via a LAG but the Config Master and the Current Master are different. I'm not sure why this is, or how to correct it, although I don't think its specifically doing any harm.

    Here is currently how it looks:

    Core1.1 # show sharing

    Load Sharing Monitor
    Config Current Agg Min Ld Share Flags Ld Share Agg Link Link Up
    Master Master Control Active Algorithm Group Mbr State Transitions
    ================================================================================
    24 21 LACP 1 L3_L4 A 21 Y A 1
    L3_L4 22 Y A 1
    L3_L4 23 Y A 1
    L3_L4 24 Y A 1
    ================================================================================
    [/code]
    enable sharing 24 grouping 21-24 algorithm address-based L3_L4 lacp

    Core2.1 # show sharing

    Load Sharing Monitor
    Config Current Agg Min Ld Share Flags Ld Share Agg Link Link Up
    Master Master Control Active Algorithm Group Mbr State Transitions
    ================================================================================
    24 21 LACP 1 L3_L4 A 21 Y A 1
    L3_L4 22 Y A 1
    L3_L4 23 Y A 1
    L3_L4 24 Y A 3
    ================================================================================
    [/code]
    enable sharing 24 grouping 21-24 algorithm address-based L3_L4 lacp

    Maybe this this is related to the LACP negotiation, or the way the ports come up - although I've not come across this before and for peace of mind rather it was right way around.

    Perhaps I just need to shut them down and bring them back in the order I would like?

    The switches are X440 G1's and running firmware version 16.2.3.5-patch1-3.

    Many thanks in advance.



  • 2.  RE: LAG Master Config and Master Current are different

    Posted 03-22-2018 03:46
    Hi Martin,

    To my understanding, although a higher port number is configured, the lower port number will take up mastership in LAG.


  • 3.  RE: LAG Master Config and Master Current are different

    Posted 03-22-2018 03:46
    Thanks Sushruth.