BGP Notes – Path Attribute Categories

Make my corrections!  Please!

Well-known mandatory : These PAs must be recognized by all BGP routers and passed along to other peers.

Well-known discretionary : These PAs do not need to be in every update, but they must be recognized by all BGP routers.

Optional transitive : These PAs don’t have to be recognized but they must be passed along to other BGP peers if they are present in an update.

Optional notransitive : These PAs neither have to be recognized nor passed along.

Aaron Conaway

I shake my head around sometimes and see what falls out. That's what lands on these pages.

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