On 30/07/2020 16:14, Robert Raszuk wrote:
> 2：For bgp example，when the pe node down，the bgp peer must down
> 30 mintus，It will not get it up via cancle advertise pua.
for the above it is sufficient to advertise the unreachability for few
seconds from each ABR independently. That would be a much more solid
Not sure about "few seconds" ... IBGP def hold time in number of
implementations is 180 sec :) .. but few minutes will work for sure.
depends how you use it.
If you can use the unreachable info in a smart way, it's sufficient if
it is present for a very short time interval.
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