> Moreover it seems that it will just also prevent any local protection to > locally bypass the failed destination. > > *[WAJ] No, It will trigger the local protection instead, not prevent.* > > You missed my point.
I am talking about *local* protection in a sense of adjacent node(s) to the PE/ASBR which failed. *Local* to the failure. You are talking about *local* protection on ingress to the network. Let's focus on this: Q1 - You are installing a /dev/null route in a router. That means that any packet sent to this destination will be dropped. How is this of any protection ? Q2 - What you may be actually trying to say is that by installing such PUA into RIB you will via RIB let know those clients (ex: BGP) which track this route that it is gone and that their possibly best path is no longer valid. Sure that is one way to share such information between IGP and BGP. But this needs to be described in the document that this is your intention. Otherwise when you say you are installing a drop route in RIB & FIB I am not sure how helpful that is (well other then transiently relaxing the network to drop some traffic few router hops away). Thx, R.
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