Company ABC has multiple offices interconnected via an MPLS provider and each office runs OSPF with a separate Area number.
In office #2 there is a department that is colaborating with a PARTNER company and office router (R5) has a link connected to partner's router. For security reasons, it has been decided to split the routing tables into separate logical instances using VRFs, as displayed below:
After you finish the configuration, you notice that there is no connectivity between office #1 and office #2 while connectivity with your PARTNER is ok.
You troubleshoot the OSPF and notice that adjacency with your PE is ok, the OSPF database contains the correct data but the routing table is not ok:
sh ip ospf neiNeighbor ID Pri State Dead Time Address Interface 192.168.2.4 1 FULL/BDR 00:00:32 192.168.2.4 FastEthernet0/0 R5# R5# sh ip ospf databaseOSPF Router with ID (192.168.2.254) (Process ID 100) Router Link States (Area 2) Link ID ADV Router Age Seq# Checksum Link count 192.168.2.4 192.168.2.4 175 0x80000002 0x00224E 1 192.168.2.254 192.168.2.254 174 0x80000002 0x0097CA 3 Net Link States (Area 2) Link ID ADV Router Age Seq# Checksum 192.168.2.5 192.168.2.254 174 0x80000001 0x00A0E5 Summary Net Link States (Area 2) Link ID ADV Router Age Seq# Checksum 192.168.1.0 192.168.2.4 113 0x80000001 0x0017CB 192.168.1.254 192.168.2.4 113 0x80000001 0x0031B0 R5# R5# sh ip route vrf MY_NETWORK... Gateway of last resort is not set 192.168.2.0/24 is variably subnetted, 3 subnets, 3 masks C 192.168.2.48/28 is directly connected, FastEthernet0/1 C 192.168.2.4/31 is directly connected, FastEthernet0/0 C 192.168.2.254/32 is directly connected, Loopback0 R5#
What is the problem?
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