On Fri, 21 Aug 2009, Leonard Giuliano wrote:
MSDP peer-RPF and pim RPF checks are orthoginal. In this case, AS3 should accept the SAs from AS2 since AS2 is in the last AS in the AS path to the originating RP in AS1. So in both cases, I would expect blackholing. In
If AS2 doesn't want AS3 to reach AS1 through it, they shouldn't announce reachability to AS1. AS3, of course, can also use inbound MBGP policy to prefer the AS6 path.
Hope this helps,
It does and confirms what I already suspected but needed some more expert verification. Now to convince AS2 to fix their MBGP outbound filters to match their transit policy...
Antonio Querubin 808-545-5282 x3003 e-mail/xmpp: tony at lava.net