[c-nsp] Community tagged route, redistributed to RR, but OSPF "learnt" route takes precedence(So RIB failure)

[CiscoNSP List]

Thanks Peter,

The RR has the route in BGP, albeit with RIB-failure:

#sh ip bgp 0.0.0.0 
BGP routing table entry for 0.0.0.0/0, version 8406453
BGP Bestpath: compare-routerid
Paths: (1 available, best #1, table default, RIB-failure(17))
  Additional-path-install
  Not advertised to any peer

It also is saying it is learnt from the PE, and also has the community tags applied (That were applied on the PE)

route-map from RR -> RR-client is 2 matches (Both community tag based)

1. default
2. customer ranges

Customer ranges (Directly connected to RR - there are on test Interfaces on the RR) are being advertised successfully to the RR-client, but default is not(They are being tagged from RR with a different community)

RR-Client ingress route map (i.e for advertisements From RR) is the same

2 matches (Both community tag based)
1. default
2. customer ranges

It is receiving the customer ranges  successfully

Ill test a "customer" range from PE -> RR, and see if that gets advertised to RR-client...as it looks like anything "learnt" from iBGP (PE->RR) is not being re-advertised to the RR-client.

Cheers 

> Date: Fri, 30 Jan 2015 11:41:01 -0800
> From: petelists at templin.org
> To: cisconsp_list at hotmail.com; cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] Community tagged route, redistributed to RR, but OSPF "learnt" route takes precedence(So RIB failure)
> 
> To the best of my knowledge, there's a completely independent "BGP RIB", 
> where all BGP routes go to live/die. Therefore, RIB failure doesn't 
> prevent propagation.
> 
> Does the RR consider this path its best path for this route? If not, it 
> won't reflect it. Otherwise, I'd verify that you have reflection 
> configured as intended, and that you don't have an outbound route map 
> that might be discarding the route.
> 
> On 1/29/2015 6:14 PM, CiscoNSP List wrote:
> > Hi Guys,
> >
> > Quick question (Hopefully!)
> >
> > Im successfully advertising 0.0.0.0 from a PE(With community tag) -> RR, but on the RR it is displaying rib failure for this route(0.0.0.0), due to the RR learning a default via OSPF(Which makes sense)...but the route is still on the RR (With the correct community tag in BGP)...now I want to re-advertise the "learnt" BGP default route with community tag to route reflector client (Via matching the community tag), but the route isnt advertised.....now I assume because it is not in RIB? Is there anyway "around" this...i.e. I want to maintain OSPF advertising default to the RR, but the RR to advertise a "different" default learnt from another PE, to a RR-Client......hopefully that makes sense :)
> >
> >
> > Cheers. 		 	   		
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>