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Configuring the Routing Instance on Router PE1

You need to configure a Layer 3 VPN routing instance on Router PE1. To indicate that the routing instance is for a Layer 3 VPN, add the instance-type vrf statement at the [edit routing-instance routing-instance-name] hierarchy level.

The domain-id statement is configured at the [edit routing-instances routing-options protocols ospf] hierarchy level. As shown in Figure 28, the routing instance on Router PE2 must share the same domain ID as the corresponding routing instance on Router PE1 so that routes from Router CE1 to Router CE2 and vice versa are distributed as Type 3 LSAs. If you configure different OSPF domain IDs in the routing instances for Router PE1 and Router PE2, the routes from each CE router will be distributed as Type 5 LSAs.

Configure the routing instance on Router PE1:



[edit]
routing-instances {


VPN-A-San-Francisco-Chicago {
instance-type vrf;
interface so-0/0/0.0;
route-distinguisher 10.255.14.216:11;
vrf-import vpn-import-VPN-A;
vrf-export vpn-export-VPN-A;


routing-options {
router-id 10.255.14.216;
autonomous-system 69;
}




protocols {


ospf {
domain-id 1.1.1.1;
export vpn-import-VPN-A;


area 0.0.0.0 {
interface so-0/0/0.0;
}


}


}


}


}

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