Multi-VRF with eBGP and OSPF: Configuring CE1 and CE2

The CE1 and CE2 router configurations are exactly the same. Both are configured in OSPF Area 0 with route redistribution enabled. The IP addresses 10.1.2.1/32 and 10.1.3.1/32 are configured for loopback interfaces, allowing them to carry routes from these networks.

1. Enable OSPF routing.
   

   device(config)# router ospf
   device(config-router-ospf-default-vrf)# 

2. Assign Area 0.
   

   device(config-router-ospf-default-vrf)#)# area 0

3. Redistribute connected routes into OSPF and exit the OSPF configuration.
   

   device(config-router-ospf-default-vrf)# redistribute connected 
   device(config-router-ospf-default-vrf)# exit
   device(config)#

4. Configure a loopback interface.
   

   device(config)# interface loopback 1
   device(config-Loopback-1)# ip address 10.1.1.1/32
   
   

5. Configure an Ethernet interface, assign it to Area 0, and assign it to the appropriate network.
   

   device(config-Loopback-1)# interface ethernet 0/1
   device(conf-if-eth-0/1)# ip ospf area 0
   device(conf-if-eth-0/1)# ip address 10.1.2.1/24

6. Repeat the above for additional loopback and Ethernet interfaces.