ExtremeSwitching (EOS)

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S series VSB LFR

  • 1.  S series VSB LFR

    Posted 12-14-2017 09:45

    We have installed two S6 chassis, bonding them using VSB.

    Each chassis has one fabric blade and one IO blade.
    The VSB bonding ports are connected on the Fabric blade.
    We have connected two LFR ports, one connecting the two Fabric blades and another connecting the two IO blades.

    If we break the VSB bonding ports, both chassis fail, and we have no traffic across any of the two chassis.

    We have not set any priority on the LFR ports.

    So now for some questions:

    1. Can you have two LFR ports on a bonded chassis.
    2. Should I ensure that the two LFR ports on chassis 1 have the same priority and the LFR ports on chassis 2 have the same priority.

  • 2.  RE: S series VSB LFR

    Posted 12-15-2017 13:05
    Please see the following knowledge article:


    It states the following:

    - The Link Failure Response (LFR) protocol provides for the configuration of one or more monitor links.

    - Setting the LFR priority to the same value for both chassis in the VSB system is not allowed.

    - The physical chassis with highest LFR priority in the bonded pair will remain active while placing the chassis with the lower priority into a dormant state.