3com S7906E Instruccion De Instalación

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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.