> 7. Cant we have a more general mechanism, where we actually
> go into hitless restart state, even for an unplanned outage?
> I mean what other difference, other than the "helper routers"
> knowing from before, that a router has gone down, and its not
> a link failure.(I mean it will be hard for routers to
> distinguish between link failures and node failures)

I had stated my agreement with this before--but I think this
brings up an interesting point. Hitless restart should be able to
handle link flaps as well as planned outages, which means it
should have robust enough signalling to recover from either
planned or unplanned events.

:-)

Russ

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