Mypower
S4100
Troubleshooting
Maipu Confidential & Proprietary Information
Page
96
of
124
Possible Reasons
Judging Methods and Solutions
The router configured with
inter-area route summary
is not the ASBR.
How to find out the cause:
The router between two OSPF areas is called Area Boarder
Router (ABR). The inter-area route summary (area Area_ID
range network ID network mask command) is effective only on
the ABR. It is ineffective on the non-ABR router.
Solution: Perform inter-area route summary on the ABR.
Fault 7: OSPF redistribution failed
Possible Reasons
Judging Methods and Solutions
The router performing
redistribution is in the Stub
area
How to find out the cause:
The stub area cannot import external routes. If the router
performing redistribution is in the stub area, the configuration of
the redistribution is ineffective.
Solution: Do not import external routes. If you have to import
external routes, change the stub area into nssa area or common
OSPF area.
OSPF Error Information Instance
O S P F E r r o r I n f o r m a t i o n ( m a j o r s t a t e m e n t s )
a n d C a u s e s
Information
Cause
Information 1:
OSPF: Authentication
error
The authentication types of the two parties are not matched
Information 2:
HELLO: HelloInterval
mismatch
The hello intervals of the two parties are not matched
Information 3:
HELLO:
RouterDeadInterval
mismatch
The dead time intervals of the two parties are not matched
Information 4:
OSPF: invalid Area ID
The interfaces of the two parties are not in the same area.
Information 5:
HELLO: NetworkMask
mismatch
The network masks of the two parties are not matched
Information 6:
HELLO: Options mismatch
The optional fields of the packets of the two negotiation parties
are not matched (namely, area types are probably different, such
as NSSA area and STUB area)
Information 7:
HELLO: Router Id collision
RIDs of the two parties are in conflict.
Note
1.
According to the previous error information, you can change the OSPF
configuration parameters to ensure that the parameters of the two
negotiation parties are the same.
