Thursday, December 13, 2018

Strange OSPF LSA Behavior Question

Can somebody please help me understand why the below LSA doesn't have the "Adv Router is not-reachable" message above it? The Advertising Router IP (172.26.100.2) is in a separate VRF and not in the same RIB as the OSPF process.

router#show ip ospf database external 192.168.100.0 OSPF Router with ID (1.1.1.1) (Process ID 1) Type-5 AS External Link States LS age: 65 Options: (No TOS-capability, No DC, Upward) LS Type: AS External Link Link State ID: 192.168.100.0 (External Network Number ) Advertising Router: 172.26.100.2 LS Seq Number: 80001C78 Checksum: 0x1A4B Length: 36 Network Mask: /26 Metric Type: 2 (Larger than any link state path) MTID: 0 Metric: 20 Forward Address: 0.0.0.0 External Route Tag: 0 router#show ip route 172.26.100.2 % Subnet not in table router#show ip route vrf MANAGEMENT 172.26.100.2 Routing Table: MANAGEMENT Routing entry for 172.26.100.0/24 Known via "connected", distance 0, metric 0 (connected, via interface) Routing Descriptor Blocks: * directly connected, via GigabitEthernet0/0/2 Route metric is 0, traffic share count is 1 


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