[Bug 156226] [lagg]: failover does not announce the failover to switch

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=156226

--- Comment #21 from pvz at itassistans.se ---
I would not call RSTP "simple" compared to sending a single broadcast frame (of
any protocol) out on the new active NIC on a failover, especially not once you
consider that to use it you have to bridge together the two NICs and make sure
you to configure your costs appropriately so that you don't accidentally make
your server an unintentional bridge in your network, cutting off the link you
actually do want active.

There's a reason other vendors have implemented this simple and elegant
solution for this problem. It is because it works, and will work in any
correctly functioning Ethernet network (with the exception of possible security
features).

Implementing this feature to the lagg failover mode does not preclude sysadmins
who dislike this mode to implement other solutions such as LACP (with the other
end being a MLAG) or bridging with RSTP. It does make FreeBSD usable in
scenarios where sysadmins might not have much say about the network operations
of the environment at large.

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