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BGP : route advertised but not received

Jad KAROUT
Level 1
Level 1

Hi everyone,

 

I'm running into a bgp problem that is really confusing to me. Here's the topology :

 

bgpprob.jpg

 

So R2 advertises a connected prefix (10.212.254.0/24) to R0. This prefix is then advertised to R1, R3 and R4. So far so good.

 

And then i have R1 advertising a connected prefix (10.212.255.0/24) to R0 as well. This prefix is then advertised by R0 to R3 and R4 but it doesn't make it to R2. The strange thing is that R0 does advertise the prefix to R2 (i checked with a

show ip bgp vpnv4 vrf ce R0 neighbor 10.245.32.1 advertised). 

However R2 does not receive this route

 (checked with show ip bgp vpnv4 vrf ce R0 neighbor 10.245.32.2  received-routes)

Does someone have any idea how this prefix gets lost on its way from R0 to R2 ??? There's no configured filtering of any kind on R0. I checked with multiple

debug 

commands (for bgp and routing) by that wasn't very helpful.

 

Finally R1 and R2 are two VRF running on the same 3750, same for R3 and R4, and R0 is on its own on yet another 3750.

 

Thx for any help.

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