Routing

 View Only
last person joined: an hour ago 

Ask questions and share experiences about ACX Series, CTP Series, MX Series, PTX Series, SSR Series, JRR Series, and all things routing, including portfolios and protocols.

Loop prevention in MC-LAG environment

  • 1.  Loop prevention in MC-LAG environment

    This message was posted by a user wishing to remain anonymous
    Posted 11-03-2022 14:41
    This message was posted by a user wishing to remain anonymous

    Hi All,

    We have a successful deployment of MC-LAG environment (A/A MX and EX VC stacks) for many years now. Recently, there had been two instances where 'l2ald' detected MAC move and MAC buffer logs indicate one or more MACs switch between multiple AE interfaces where physically loop is not possible.

    L2ALD_MAC_MOVE_NOTIFICATION: MAC Moves detected in the system
    l2ald_iccpd_client: Pkt tx queue size:40001 reached MAX limit.

    I was wondering what protection mechanism is generally recommended for this. We are considering to test the below,

    1) MAC pinning for the trunk interfaces in the bridge domain
    2) Configure "enable-mac-move-action" under bridge domain

    Any recommendation/suggestion is much appreciated.