Configure BGP Route Target Filtering on Router PE1

This section describes how to enable BGP route target filtering on router PE1 for this example.

Configure the routing options on router PE1 as follows:

[edit]

routing-options {

    route-distinguisher-id 10.255.14.182;

    autonomous-system 200;

}

Configure the BGP protocol on router PE1 as follows:

[edit]

protocols {

    bgp {

        group to_VPN_D {

            type internal;

            local-address 10.255.14.182;

            peer-as 200;

            neighbor 10.255.14.174 {

                family inet-vpn {

                    unicast;

                }

                family route-target;

            }

        }

    }

}

Configure the vpn1 routing instance as follows:

[edit]

routing-instances {

    vpn1 {

        instance-type vrf;

        interface t1-0/1/2.0;

        vrf-target target:200:101;

        protocols {

            ospf {

                export bgp-routes;

                area 0.0.0.0 {

                    interface t1-0/1/2.0;

                }

            }

        }

    }

}

Configure the vpn2 routing instance on router PE1 as follows:

[edit]

routing-instances {

    vpn2 {

        instance-type vrf;

        interface t1-0/1/2.1;

        vrf-target target:200:102;

        protocols {

            ospf {

                export bgp-routes;

                area 0.0.0.0 {

                    interface t1-0/1/2.1;

                }

            }

        }

    }

}

Once you have implemented this configuration, you should see the following when you issue a show route table bgp.rtarget.0 command:

user@host> show route table bgp.rtarget.0

 bgp.rtarget.0: 4 destinations, 6 routes (4 active, 0 holddown, 0 hidden)

 + = Active Route, - = Last Active, * = Both

 200:200:101/96                

                    *[RTarget/5] 00:27:42

                       Local

                     [BGP/170] 00:27:30, localpref 100, from

 10.255.14.174

                       AS path: I

                     > via t3-0/0/0.0

 200:200:102/96                

                    *[RTarget/5] 00:27:42

                       Local

                     [BGP/170] 00:27:30, localpref 100, from

 10.255.14.174

                       AS path: I

                     > via t3-0/0/0.0

 200:200:103/96                

                    *[BGP/170] 00:27:30, localpref 100, from

 10.255.14.174

                       AS path: I

                     > via t3-0/0/0.0

 200:200:104/96                

                    *[BGP/170] 00:27:30, localpref 100, from

 10.255.14.174

                       AS path: I

                     > via t3-0/0/0.0