Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations TouchToneTommy on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!

OSPF Diagram

Status
Not open for further replies.

Antelope

MIS
Aug 6, 2003
138
US
I have a visio diagram of some routers and want to ask someone some OSPF suggestions. Any way I can post a *jpg file to this forum?? If not and you are familar with OSPF, can I email this picture to someone and ask them some design questions?
 
Hello there, do you still need help on this issue? If so just let me know and I will try to help out. Cheers and good luck
 
OK, here is the website and a appreciate your help:


The OSPF area's aren't established yet, this is just my idea.

I've started with a couple routers running OSPF, but I keep getting these errors:

Mar 2 02:05:12: OSPF: Rcv pkt from 172.26.3.3, Ethernet1/0, area 0.0.0.0 mismatch area 0.0.0.2 in the header

and

*Mar 2 00:37:24: %OSPF-4-ERRRCV: Received invalid packet: mismatch area ID, fro
m backbone area must be virtual-link but not found from 172.16.3.1, FastEthernet
0/0
 
Hmmm .. "Remote linking of images not allowed"

Can you provide your configs so that we can take a look?

Chris.

**********************
Chris A.C, CCNA, CCSA
**********************
 
Actually, it must be something with that website. Cut and Paste that think instead of clicking on it and it will work.
 
Ok, I can see that. So where are you getting the error? Can you post the configs for the routers in question?

Chris.



**********************
Chris A.C, CCNA, CCSA
**********************
 


This error:
Mar 2 03:50:32: OSPF: Rcv pkt from 172.26.3.3, Ethernet1/0, area 0.0.0.0 mismatch area 0.0.0.2 in the header

Is coming from the router T1_Backup 172.16.3.6 and here is its config:

T1_Backup#show config
Using 1559 out of 29688 bytes

version 12.3
service timestamps debug datetime
service timestamps log datetime
service password-encryption
!
hostname T1_Backup
!
boot-start-marker
boot-end-marker
!
logging buffered 5000 debugging
enable secret 5 $1$A5dM$89mIexdzvPGU.ZsrjjYsH/
enable password 7 14040B18180127
!
aaa new-model
!
!
aaa session-id common
ip subnet-zero
ip cef
!
!
no ip domain lookup
!
!
interface Loopback0
ip address 1.1.1.8 255.255.255.0
!
interface Ethernet0/0
no ip address
half-duplex
no cdp enable
!
interface Serial0/0
description connected to SDS
ip address 192.168.6.2 255.255.255.0
service-module t1 clock source internal
service-module t1 remote-alarm-enable
!
interface Ethernet1/0
ip address 172.16.3.6 255.255.0.0
half-duplex
!
router ospf 1
log-adjacency-changes
network 172.16.0.0 0.0.255.255 area 0
network 192.168.6.0 0.0.0.255 area 0
!
ip http server
ip classless
ip route 0.0.0.0 0.0.0.0 172.16.3.1
ip route 172.26.0.0 255.255.0.0 Serial0/0
ip route 192.168.6.0 255.255.255.0 Serial0/0
!
!
logging 172.16.1.8
!

!
end





And this error:

*Mar 2 02:25:04: %OSPF-4-ERRRCV: Received invalid packet: mismatch area ID, from backbone area must be virtual-link but not found from 172.16.3.1, FastEthernet0/0,

Is on RP_Cisco1 Router, but also get a similar error from 3 other routers in Area 0.

Using 1263 out of 29688 bytes
!
version 12.3
no parser cache
service timestamps debug datetime
service timestamps log datetime
service password-encryption
!
!
boot-start-marker
boot-end-marker
!
logging buffered 5000 debugging
!
memory-size iomem 25
aaa new-model
!
!
aaa session-id common
ip subnet-zero
!
!
no ip domain lookup
!
ip cef
!

!
interface Loopback0
ip address 1.1.1.7 255.255.255.0
!
interface FastEthernet0/0
description Backup Network
ip address 172.26.3.2 255.255.0.0
speed auto
full-duplex
vrrp 1 ip 172.26.3.1
vrrp 1 timers advertise 3
vrrp 1 authentication text WCHvrrp
!
interface Serial1/0
ip address 192.168.6.1 255.255.255.0
service-module t1 clock source internal
service-module t1 remote-alarm-enable
!
router ospf 1
log-adjacency-changes
network 172.26.0.0 0.0.255.255 area 2
network 192.168.6.0 0.0.0.255 area 0
!
ip classless
ip route 0.0.0.0 0.0.0.0 172.16.1.1
ip route 172.16.0.0 255.255.0.0 Serial1/0
no ip http server

!
end




 
On your serial WAN links, try to specify the OSPF network types by using this:

!
interface s0/0
ip ospf network point-to-point
!

Also it's recommended to hard-code the OSPF router-ID by using your loopback IP address like this:

!
router ospf 1
router-id 1.1.1.7
!

 
Ok, I'll add that and see if those messages stop. Even though those messages appear, everything is routing correctly.

 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top