Gateway switching

  • We have a setup that does not work unless we turn on gateway switching.

    We use HA in with 2 WAN connections.
    All LAN subnets are using a failover gateway group for the rules.
    If we do a carp fail over it works fine.

    If we shut down primary circuit by killing the switch port the BGP fails over normally but we lose all traffic.
    If we turn on gateway switching it works.

    Turned off HA and shut down secondary firewall.
    So its now only running multi wan.
    Same problem.  Its like it will not use the other gateway.

    WAN1 gateway is default and tier 1.
    WAN2 gateway is tier 2.

    Can someone explain the potential drawbacks to the gateway switching?

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