Configure an IBGP Session between PE Routers

You must configure an IBGP session between PE routers to allow the PE routers to exchange information about routes originating and terminating in the VPN. To do this, include the family inet-vpn statement when configuring IBGP:

[edit protocols]

bgp {

    group group-name {

        type internal;

        local-address ip-address; 

        family inet-vpn {

            unicast;

        }

        neighbor ip-address;

    }

}

The family inet-vpn statement indicates that the IBGP session is for the VPN.

The IP address in the local-address statement is the address of the loopback interface (lo0) on the local PE router. The IBGP session for VPNs runs through the loopback address. (You must also configure the lo0 interface at the [edit interfaces] hierarchy level.)

The IP address in the neighbor statement is the loopback address of the neighboring PE router. If you are using RSVP signaling, this IP address is the same address you specify in the to statement at the [edit mpls label-switched-path lsp-path-name] hierarchy level when you configure the MPLS LSP.