here is an excerpt from the following
URL:http://www.cisco.com/warp/public/104/19.html#1
Mismatched Area ID
%OSPF-4-ERRRCV: Received invalid packet: mismatch area ID, from backbone
area must be virtual-link but not found from 170.170.3.3,
Ethernet0
The router generating this message received an invalid OSPF packet on
Ethernet 0 from neighbor 170.170.3.3. The packet is invalid because its area
ID is area 0 (the backbone area). This implies that the receiving router's
Ethernet 0 interface is not in area 0. Note that the neighboring router,
which has its interface in area 0, won't display this message in its console
logs. Only the router whose interface is in an area other than area 0
generates the error message.
HTH
>From: "Ejay Hire" <[EMAIL PROTECTED]>
>Reply-To: "Ejay Hire" <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>Subject: DEBUG IP OSPF question
>Date: Tue, 12 Sep 2000 11:50:41 CDT
>
>When I Debug Ip ospf rip, I'm getting something that looks odd every 10
>seconds or so. Could someone explain the following... I attached the
>config
>to the end of the message, so It's kind of long. (Sorry.)
>
>Tanks for the help.
>
>Router2#debug ip ospf events
>
>OSPF events debugging is on
>OSPF: Rcv pkt from 10.0.1.1, Ethernet0, area 0.0.0.2
> mismatch area 0.0.0.1 in the header
>
>^^^^^^^^^^^^^^^^^^^^^^These come every Ten seconds. What are they?
>Why does it say "Mismatch area"?
>
>
>OSPF: Rcv pkt from 10.0.1.1, Ethernet0, area 0.0.0.2
> mismatch area 0.0.0.1 in the header
>Router2#no debug all
>
>All possible debugging has been turned off
>
>Router2#show ip route
>Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
> D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
> N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
> E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
> i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate
>default
> U - per-user static route, o - ODR
>
>Gateway of last resort is not set
>
> 10.0.0.0/24 is subnetted, 3 subnets
>C 10.0.2.0 is directly connected, Ethernet0
>C 10.0.0.0 is directly connected, Serial0
>O IA 10.0.1.0 [110/74] via 10.0.0.1, 00:06:35, Serial0
>
>
>
>Router2# show config
>Using 458 out of 32762 bytes
>!
>version 11.2
>no service password-encryption
>no service udp-small-servers
>no service tcp-small-servers
>!
>hostname Router2
>!
>!
>ip subnet-zero
>!
>interface Ethernet0
>ip address 10.0.2.1 255.255.255.0
>!
>interface Serial0
>ip address 10.0.0.2 255.255.255.0
>!
>interface Serial1
>no ip address
>shutdown
>!
>router ospf 100
>network 10.0.2.0 0.0.0.255 area 2
>network 10.0.0.0 0.0.0.255 area 0
>!
>no ip classless
>!
>!
>line con 0
>line aux 0
>line vty 0 4
>login
>!
>end
>
>
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