We have an ospf network with 3 areas configured and we get this error message on the area border router of Area 2
%OSPF-4-ERRRCV: Received invalid packet: mismatch area ID, from backbone area must be virtual-link but not found from 192.168.4.1, Ethernet0
There is a document on cisco tacs which deals with this but unfortunately it doesnt solve the problem. I would like someone to read the configurations given below and suggest the solution
3 cisco 2500 routers have been used and the
The network is configured in following way,
Say Router A is in Area 0 and Area 1, has
--------------------------------------------------------------------------Router A---------------
Ethernet E0 with ip address 192.168.4.1/24
Serial S0 with ip address 192.168.1.1/30
Serial S1 with ip address 192.168.1.5/30
Loopback 0 with ip address 1.1.1.1
with following ospf configuration :
----------------------------------------------------------------------
router ospf 1
network 192.168.1.0 0.0.0.7 area 1
network 192.168.4.0 0.0.0.255 area 0
area 1 virtual-link 4.4.4.4
-------------------------------------------------------------------------------End router A------
Router B which is Area 1 has the following
Ethernet E0 192.168.2.1/24
Serial S0 192.168.1.2/30 (connected to S0 of router A)
Serial S1 192.168.1.9/30( connected to S1 of router C)
which has ospf configuration
router ospf 1
network 192.168.1.8 0.0.0.7 area 1
network 192.168.1.0 0.0.0.7 area 1
--------------------------------------------------------------------------------------------------
Router C which is in Area 1 and 2
Ethernet E0 which has ip address 192.168.3.1/24
Serial S1 192.168.1.10/30( connected to S1 of router B)
which has ospf configuration
network 192.168.1.8 0.0.0.7 area 1
network 192.168.3.0 0.0.0.255 area 2
area 1 virtual-link 1.1.1.1
