Loss of routes in MP-BGP Infra

[cHrome08]

Hi Everyone,

I am kinda lost at the moment on why I am facing this issue and was hoping I could get someone to explain to me why this is happening.

Below is the simple network diagram of the issue I am facing.

I believe this has something to do with route-reflectors (I may be wrong).

I do not have any P routers in my environment at the moment.

In my MPLS network, I have different VRFs that is spanned between the PEs.

North_PE and South_PE are both Route-reflectors and SiteA_PE is a route-reflector-client of North_PE.

The issue faced is from SiteA_PE routing table for the different VRFs, I am only seeing a subset of routes for each VRFs and these routes are the ones that are local to North_PE.
I am NOT able to see routes that are beyond North_PE (i.e. local to South_PE).

BGP Configuration - North_PE

router bgp 65000

bgp-cluster id 1.1.1.1

neighbor PeerGroup1 peer-group
neighbor PeerGroup1 remote-as 65000
neighbor PeerGroup1 update-source Loopback0
neighbor PeerGroup1 soft-reconfiguration inbound
neighbor PeerGroup2 peer-group
neighbor PeerGroup2 remote-as 65000
neighbor PeerGroup2 description "RR_Client"
neighbor PeerGroup2 update-source Loopback0
neighbor PeerGroup2 soft-reconfiguration inbound

neighbor 2.2.2.2 peer-group PeerGroup1

neighbor 3.3.3.3 peer-group PeerGroup2

!

address-family vpnv4

neighbor PeerGroup1 send-community extended
neighbor PeerGroup2 send-community extended
neighbor PeerGroup2 route-reflector-client

neighbor 2.2.2.2 activate

neighbor 3.3.3.3 activate

exit address-family

BGP Configuration - SiteA_PE

router bgp 65000

neighbor 1.1.1.1 peer-group
neighbor 1.1.1.1 remote-as 65000
neighbor 1.1.1.1 update-source Loopback0
neighbor 1.1.1.1 soft-reconfiguration inbound

!

address-family vpnv4

neighbor 1.1.1.1 send-community extended

neighbor 1.1.1.1 activate

exit address-family

Is there anyone that could advise me if I have done my configuration wrong?

Thanks.

[Francesco Molino]

Hi

North-PE should be your route reflector and client + South-PE are route reflector client.

Afterwards, every prefixes should be exchanged.

[cHrome08 · Accepted solution]

Hi Francesco,

Thanks for your assistance.
It turns out that on the North_PE, I need to put a command "neighbor PeerGroup2 next-hop-self all" for vpnv4.
Once that config is in, all routes are redistributed via the RR.

Regards,
Han