Configure BGP Route Target Filtering on the Route Reflector

This section illustrates how to enable BGP route target filtering on the route reflector for this example.

Configure the routing options on the route reflector as follows:

[edit]

routing-options {

    route-distinguisher-id 10.255.14.174;

    autonomous-system 200;

}

Configure the BGP protocol on the route reflector as follows:

[edit]

protocols {

    bgp {

        group rr-group {

            type internal;

            local-address 10.255.14.174;

            cluster 10.255.14.174;

            peer-as 200;

            neighbor 10.255.14.182 {

                description to_PE1_vpn12;

                family inet-vpn {

                    unicast;

                }

                family route-target;

            }

            neighbor 10.255.14.176 {

                description to_PE2_vpn06;

                family inet-vpn {

                    unicast;

                }

                family route-target;

            }

            neighbor 10.255.14.178 {

                description to_PE3_vpn08;

                    family inet-vpn {

                        unicast;

                    }

                family route-target;

            }

        }

    }

}

Once you have configured the route reflector in this manner, you should see the following when you issue the show route table bgp.rtarget.0 command:

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

 bgp.rtarget.0: 4 destinations, 8 routes (4 active, 0 holddown, 0 hidden)

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

 200:200:101/96                

                    *[BGP/170] 00:29:03, localpref 100, from

 10.255.14.176

                       AS path: I

                     > via t1-0/2/0.0

                     [BGP/170] 00:29:03, localpref 100, from

 10.255.14.178

                       AS path: I

                     > via t3-0/1/1.0

                     [BGP/170] 00:29:03, localpref 100, from

 10.255.14.182

                       AS path: I

                     > via t3-0/1/3.0

 200:200:102/96                

                    *[BGP/170] 00:29:03, localpref 100, from

 10.255.14.176

                       AS path: I

                     > via t1-0/2/0.0

                     [BGP/170] 00:29:03, localpref 100, from

 10.255.14.182

                       AS path: I

                     > via t3-0/1/3.0

 200:200:103/96                

                    *[BGP/170] 00:29:03, localpref 100, from

 10.255.14.176

                       AS path: I

                     > via t1-0/2/0.0

                     [BGP/170] 00:29:03, localpref 100, from

 10.255.14.178

                       AS path: I

                     > via t3-0/1/1.0

 200:200:104/96                

                    *[BGP/170] 00:29:03, localpref 100, from

 10.255.14.178

                       AS path: I

                     > via t3-0/1/1.0