HP 6125XLG R2306-HP 6125XLG Blade Switch Layer 3 - IP Routing Configuration Gu - Page 117

BkLabel: NULL Tunnel ID: Invalid BkTunnel ID: Invalid BkNextHop: 12.12.12.2 Interface: Vlan-interface200 BkInterface: Vlan-interface100 # Display route 1.1.1.1/32 on Switch D to view the backup next hop information. [SwitchD] display ip routing-table 1.1.1.1 verbose Summary Count : 1 Destination: 1.1.1.1/32 Protocol: OSPF SubProtID: 0x1 Cost: 1 Tag: 0 OrigTblID: 0x0 TableID: 0x2 NBRID: 0x26000002 AttrID: 0xffffffff Flags: 0x1008c Label: NULL BkLabel: NULL Tunnel ID: Invalid BkTunnel ID: Invalid Process ID: 1 Age: 04h20m37s Preference: 10 State: Active Adv OrigVrf: default-vrf OrigAs: 0 LastAs: 0 Neighbor: 0.0.0.0 OrigNextHop: 13.13.13.1 RealNextHop: 13.13.13.1 BkNextHop: 24.24.24.2 Interface: Vlan-interface200 BkInterface: Vlan-interface101 Troubleshooting OSPF configuration No OSPF neighbor relationship established Symptom No OSPF neighbor relationship can be established. Analysis If the physical link and lower layer protocols work well, verify OSPF parameters configured on interfaces. Two neighbors must have the same parameters, such as the area ID, network segment, and mask (a P2P or virtual link can have different network segments and masks). Solution 1. Use the display ospf peer command to verify OSPF neighbor information. 2. Use the display ospf interface command to verify OSPF interface information. 3. Ping the neighbor router's IP address to verify that the connectivity is normal. 4. Verify OSPF timers. The dead interval on an interface must be at least four times the hello interval. 5. On an NBMA network, use the peer ip-address command to manually specify the neighbor. 6. At least one interface must have a router priority higher than 0 on an NBMA or a broadcast network. 106