[Question] From my understanding the Fast fail over option in group tables
allows for monitoring a link and when the detected condition occurs will
apply that group to the packets. This seems fast and would work well for a
topology like

 h1 --- x --- x ---- x --- h2
           \           /
            x  ---  x

if the green path is the original

and a failure

 h1 --- x --- x ---- x --- h2
           \           /
            x  ---  x

equipped with FF could have a backup path:

 h1 --- x --- x ---- x --- h2
           \           /
            x  ---  x

However if instead the failure is here:

 h1 --- x --- x ---- x --- h2
           \           /
            x  ---  x

then FF really wont help and we need to use a controller application to
dynamically re-route traffic.

My question is:

Is it possible for a switch to take an action when a link goes down such as
inform neighboring switches or take a port down automatically or is this
something that should be solved differently?

thanks,
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