Ok, here's what I do now to make it work. Instead of applying the next hop inbound, I just set a community. Then going towards the RR, I match the community and set the next-hop, local pref, no-export, etc. The BGP route then gets propagated and along with the null route, and it recursively points to null so RPF fails.
On Fri, Aug 28, 2009 at 6:29 AM, Bryan Bartik <[email protected]> wrote: > Hey Rick, > > I am trying it on some different models: 6500, 7600, and a 3640, haven't > tried a 7200. All of them behave the same way. When I remove the VRF and > just have a normal EBGP session, it works. I might have to peer the Trigger > router one hop away from the PE (multihop EBGP, while sharing the peering > address through the VRF), I have tested this and it seems to work. > > > On Fri, Aug 28, 2009 at 12:47 AM, Rick Mur <[email protected]> wrote: > >> Hi Bryan, >> Is the route-map applied inbound from the BGP neighbor session of the >> trigger router? The trigger router is also in VRF internet or in the global >> table? >> I actually never tried this within a VRF. Have you tried to do the same >> thing without the vrf INTERNET? >> >> On what platform are you trying this? Have you tried doing it on a 7200? >> >> -- >> Regards, >> >> Rick Mur >> CCIE2 #21946 (R&S / Service Provider) >> >> Sr. Support Engineer – IPexpert, Inc. >> URL: http://www.IPexpert.com >> >> >> >> >> On 27 aug 2009, at 20:36, Bryan Bartik wrote: >> >> Hello, >> >> I am trying to set up a source based black hole an MPLS VPN but I cannot >> get the discard route to properly be accepted as a next hop, output says >> "inaccessible". >> >> Trigger----->PE >> >> Trigger is sending x.x.x.98/32 to the PE. >> On the PE, I have a route-map that sets all next hops (VRF) from trigger >> to 172.31.254.254. >> On the PE, I have a null route in the VRF for 172.31.254.254. >> >> lab#sho run | inc ip route >> ip route vrf INTERNET 172.31.254.254 255.255.255.255 Null0 >> >> lab#sho route-map SBBH >> route-map SBBH, permit, sequence 10 >> Match clauses: >> Set clauses: >> local-preference 252 >> ip vrf INTERNET next-hop 172.31.254.254 >> Policy routing matches: 0 packets, 0 bytes >> >> BGP routing table entry for xxx:xxx:x.x.x.98/32, version 3747716 >> Paths: (2 available, best #2, table INTERNET) >> Not advertised to any peer >> 65187 >> 172.31.254.254 (inaccessible) from x.x.x.x (TRIGGER IP) >> Origin incomplete, metric 0, localpref 252, valid, external >> Extended Community: RT:xxx:xxx >> >> Am I missing something? >> >> Thanks, >> >> -- >> Bryan Bartik >> CCIE #23707 (R&S), CCNP >> Sr. Support Engineer - IPexpert, Inc. >> URL: http://www.IPexpert.com >> _______________________________________________ >> For more information regarding industry leading CCIE Lab training, please >> visit www.ipexpert.com >> >> >> > > > -- > Bryan Bartik > CCIE #23707 (R&S), CCNP > Sr. Support Engineer - IPexpert, Inc. > URL: http://www.IPexpert.com > -- Bryan Bartik CCIE #23707 (R&S), CCNP Sr. Support Engineer - IPexpert, Inc. URL: http://www.IPexpert.com
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