OSPF Database Observation
Hello all. I have been looking at the topology of the OSPF network that I am currently working with.
When I do a show ip ospf database there is one subnet that is not
appearing in the “Net Link States (Area 0)” ….even though it is a LAN and it is in area 0.
Now the only thing I can think of is that there is only one OSPF
router on this segment, which is obviously the DR, so could this
be why it is not advising us of this network. (the network statement does cover this interface)
Any clues appreciated.
greg1c last edited by
My guess is there is nothing running OSPF connected on the interface (or blocked by ACL), or the other side does not have the proper network statements or area. You should have a router-id statement in your OSPF config , usually the loopback address. I would also use MD5 password authentication.
Don’t know much about cisco’s, sorry!
And here is a bit of the config……
description link to xyz
ip address 10.146.160.3 255.255.255.0
ip helper-address 10.128.161.68
standby 1 ip 10.146.160.1
standby 1 priority 110
standby 1 preempt
standby 1 track FastEthernet1/0 50
router ospf 100
redistribute connected subnets
redistribute static subnets
network 10.128.169.128 0.0.0.3 area 0
network 10.146.136.1 0.0.0.0 area 0
network 10.146.160.0 0.0.0.255 area 0
Hi there….just a box standard router. It is the only ospf router on the segment that is not being included in the ospf database.
Cisco Internetwork Operating System Software
IOS 3600 Software (C3640-DS-M), Version 12.2(29a), RELEASE SOFTWARE (fc1)
Copyright 1986-2005 by cisco Systems, Inc.
Compiled Fri 12-Aug-05 16:50 by tinhuang
Image text-base: 0x60008930, data-base: 0x61264000
ROM: System Bootstrap, Version 11.1(20)AA2, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)
what kind of device are you talking abour here?
Hi thanks for replying. Yes the network statement covers
the lan interface, though there is no specific interface configuration on the router for that interface, and I don’t think there needs to be.
Did you enable OSPF on interface level?