Troubleshooting Ospf Configuration - Huawei Quidway S3900 Series Operation Manual

Operation Manual – Routing Protocol
Quidway S3900 Series Ethernet Switches-Release 1510
[Switch B-ospf-1-area-0.0.0.1] network 197.1.1.0 0.0.0.255
[Switch B-ospf-1-area-0.0.0.1] vlink-peer 3.3.3.3
# Configure Switch C.
<Switch C> system-view
[Switch C] interface Vlan-interface 1
[Switch C-Vlan-interface1] ip address 152.1.1.1 255.255.255.0
[Switch C-Vlan-interface1] quit
[Switch C] interface Vlan-interface 2
[Switch C-Vlan-interface2] ip address 197.1.1.1 255.255.255.0
[Switch C-Vlan-interface2] quit
[Switch C] router id 3.3.3.3
[Switch C] ospf
[Switch C-ospf-1] area 1
[Switch C-ospf-1-area-0.0.0.1] network 197.1.1.0 0.0.0.255
[Switch C-ospf-1-area-0.0.0.1] quit
[Switch C-ospf-1-area-0.0.0.1] vlink-peer 2.2.2.2
[Switch C-ospf-1] area 2
[Switch C-ospf-1-area-0.0.0.2] network 152.1.1.0 0.0.0.255

4.10 Troubleshooting OSPF Configuration

Symptom 1: OSPF has been configured in accordance with the above-mentioned
steps, but OSPF does not run normally on the switch.
Solution: Perform the following procedure.
Local fault removal: Firstly, check whether the protocol works normally between two
directly connected routers. The normal sign is that the peer state machine between
the two routers reaches the FULL state. Note: On a broadcast or NBMA network, if the
interfaces between two routers are in DROther state, the peer state machine between
the two routers are in 2-way state, instead of FULL state. The peer state machine
between DR/BDR and all the other routers is in FULL state.
Use the display ospf peer command to view peers.
Use the display ospf interface command to view the OSPF information on an
interface.
Check whether the physical connection is correct and the lower layer protocol
operates normally. You can use the ping command to test. If the local router
cannot ping through the peer router, it indicates that faults exist on the physical
link and the lower level protocol.
If the physical connection and the lower layer protocol are normal, check the
OSPF parameters configured on the interface. Verify that these parameter
configurations are consistent with those on the peer interface. The area IDs must
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Chapter 4 OSPF Configuration