Incorrect routing information, Symptom, Analysis – H3C Technologies H3C S7500E Series Switches User Manual
Page 145: Solution
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5) On an NBMA network, using the peer ip-address command to specify the neighbor manually is
required.
6) On an NBMA or a broadcast network, at least one connected interface must have a DR priority
higher than 0.
Incorrect Routing Information
Symptom
OSPF cannot find routes to other areas.
Analysis
The backbone area must maintain connectivity to all other areas. If a router connects to more than one
area, at least one area must be connected to the backbone. The backbone cannot be configured as a
Stub area.
In a Stub area, all routers cannot receive external routes, and all interfaces connected to the Stub area
must belong to the Stub area.
Solution
1) Use
the
display ospf peer command to display neighbors.
2) Use
the
display ospf interface command to display OSPF interface information.
3) Use
the
display ospf lsdb command to display the Link State Database to check its integrity.
4) Display information about area configuration using the display current-configuration
configuration ospf command. If more than two areas are configured, at least one area is
connected to the backbone.
5) In a Stub area, all routers attached are configured with the stub command. In an NSSA area, all
interface connected to which are configured with the nssa command.
6) If a virtual link is configured, use the display ospf vlink command to check the state of the virtual
link.