Configure IBGP on the PE Routers

On the PE routers, configure an internal Border Gateway Protocol (IBGP) session with the following parameters:

• Layer 2 VPN—To indicate that the IBGP session is for a Layer 2 VPN, include the family l2vpn statement.
• Local address—The IP address in the local-address statement is the same as the address configured in the to statement at the [edit protocols mpls label-switched-path lsp-path-name] hierarchy level on the remote PE router. The IBGP session for Layer 2 VPNs runs through this address.
• Neighbor address—Include the neighbor statement, specifying the IP address of the neighboring PE router.

On Router A, configure IBGP:

[edit]

protocols{

    bgp {

        import match-all;

        export match-all;    

        group pe-pe {

            type internal;

            neighbor 192.168.37.5 {

                local-address 192.168.37.1;

                family l2vpn {

                    unicast;

                }

            }

            neighbor 192.168.37.10 {

                local-address 192.168.37.1;

                family l2vpn {

                    unicast;

                }

            }

        }

    }

On Router B, configure IBGP:

[edit]

protocols{

    bgp {

        local-address 192.168.37.5;

        import match-all;

        export match-all;    

        group pe-pe {

            type internal;

            neighbor 192.168.37.1 {

                local-address 192.168.37.5;

                family l2vpn {

                    unicast;

                }

            }

            neighbor 192.168.37.10 {

                local-address 192.168.37.5;

                family l2vpn {

                    unicast;

                }

            }

        }

    }

}

On Router C, configure IBGP:

[edit]

protocols{

    bgp {

        local-address 192.168.37.10;

        import match-all;

        export match-all;    

        group pe-pe {

            type internal;

            neighbor 192.168.37.1 {

                local-address 192.168.37.10;

                family l2vpn {

                    unicast;

                }

            }

            neighbor 192.168.37.5 {

                local-address 192.168.37.10;

                family l2vpn {

                    unicast;

                }

            }

        }

    }

}