Troubleshooting ospf configuration, No ospf neighbor relationship established, Symptom – H3C Technologies H3C S5560 Series Switches User Manual

Page 146: Analysis, Solution, Incorrect routing information

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Destination: 1.1.1.1/32

Protocol: OSPF Process ID: 1

SubProtID: 0x1 Age: 04h20m37s

Cost: 1 Preference: 10

Tag: 0 State: Active Adv

OrigTblID: 0x0 OrigVrf: default-vrf

TableID: 0x2 OrigAs: 0

NBRID: 0x26000002 LastAs: 0

AttrID: 0xffffffff Neighbor: 0.0.0.0

Flags: 0x1008c OrigNextHop: 13.13.13.1

Label: NULL RealNextHop: 13.13.13.1

BkLabel: NULL BkNextHop: 24.24.24.2

Tunnel ID: Invalid Interface: Vlan-interface200

BkTunnel ID: Invalid 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 correctly, 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

To resolve the problem:

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.

7.

If the problem persists, contact H3C Support.

Incorrect routing information

Symptom

OSPF cannot find routes to other areas.

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