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Configure BGP Route Target Filtering on Router PE3

The following section describes how to enable BGP route target filtering on Router PE3 for this example.

Configure the routing options on Router PE3 as follows:

[edit]
routing-options {
route-distinguisher-id 10.255.14.178;
autonomous-system 200;
}

Configure the BGP protocol on Router PE3 as follows:

[edit]
protocols {
bgp {
group to_vpn04 {
type internal;
local-address 10.255.14.178;
peer-as 200;
neighbor 10.255.14.174 {
family inet-vpn {
unicast;
}
family route-target;
}
}
}
}

Configure the vpn1 routing instance on Router PE3 as follows:

[edit]
routing-instances {
vpn1 {
instance-type vrf;
interface t3-0/0/0.0;
vrf-target target:200:101;
protocols {
rip {
group vpn1 {
export bgp-routes;
neighbor t3-0/0/0.0;
}
}
}
}
}

Configure the vpn3 routing instance on Router PE3 as follows:

[edit]
routing-instances {
vpn3 {
instance-type vrf;
interface t3-0/0/0.1;
vrf-target target:200:103;
protocols {
rip {
group vpn3 {
export bgp-routes;
neighbor t3-0/0/0.1;
}
}
}
}
}

Configure the vpn4 routing instance on Router PE3 as follows:

[edit]
routing-instances {
vpn4 {
instance-type vrf;
interface t3-0/0/0.2;
vrf-target target:200:104;
protocols {
rip {
group vpn4 {
export bgp-routes;
neighbor t3-0/0/0.2;
}
}
}
}
}

Once you have configured Router PE3 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, 7 routes (4 active, 0 holddown, 0 hidden)
 + = Active Route, - = Last Active, * = Both
 
 200:200:101/96                
                    *[RTarget/5] 00:29:42
                       Local
                     [BGP/170] 00:29:30, localpref 100, from
 10.255.14.174
                       AS path: I
                     > via t3-0/0/1.0
 200:200:102/96                
                    *[BGP/170] 00:29:29, localpref 100, from
 10.255.14.174
                       AS path: I
                     > via t3-0/0/1.0
 200:200:103/96                
                    *[RTarget/5] 00:29:42
                       Local
                     [BGP/170] 00:29:30, localpref 100, from
 10.255.14.174
                       AS path: I
                     > via t3-0/0/1.0
 200:200:104/96                
                    *[RTarget/5] 00:29:42
                       Local
                     [BGP/170] 00:29:30, localpref 100, from
 10.255.14.174
                       AS path: I
                     > via t3-0/0/1.0
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