From: Vijay Venkatesh (vijay.venkatesh@xxxxxxx)
Date: Fri Jan 05 2001 - 01:03:40 GMT-3
Guys,
I checked all this and I even reloaded the routers and all that
cool stuff but the one thing I finally figured was that deleting the
ospf virtual link and reconfiging it worked perfectly. Don't ask me
why this is so ... it's like you don't ask why windows bluescreens ...
it just does. One just figures how to fix it and moves on I guess ...
one mystifying problem at a time.
Vijay.
Dave Goldsmith wrote:
>
> Vijay,
>
> I agree with Ray, you really need to look at a show ip ospf data ext for the
150
> net you are not seeing and show ip route for the forwarding address in this
> entry.
>
> Dave G.
>
> Raymond May wrote:
>
> > Vijay,
> > Could you send a copy of your ospf database on R8.
> >
> > Brgds,
> >
> > Ray May
> >
> > >From: Vijay Venkatesh <vijay.venkatesh@usa.net>
> > >Reply-To: Vijay Venkatesh <vijay.venkatesh@usa.net>
> > >To: "BUI, TIN T (SBCSI)" <tb4565@sbc.com>
> > >CC: "'Johnny Gorham'" <jgorham@cisco.com>, chrish@bjen.com,
> > >ccielab@groupstudy.com
> > >Subject: Re: OSPF virtual-link question
> > >Date: Wed, 03 Jan 2001 18:56:00 -0500
> > >
> > >See prior email. Classic cisco magic
> > >Vijay
> > >
> > >"BUI, TIN T (SBCSI)" wrote:
> > > >
> > > > Did you get this problem resolved? Please post results. Just some
> > > > comments:
> > > >
> > > > * A virtual link is really just an extension of area 0 so there should
> > >not
> > > > be any problem with seeing loopback 0. Router id is always the highest
> > >ip
> > > > of router. Loopback will be looked first before other ip addresses.
> > >One
> > > > problem I've seen is that once a router id has been established, and
> > >then
> > > > you add a loopback, that loopback will not be your router id until you
> > > > reload router. Some admins might not realize this so they try to use
> > >router
> > > > id of loopback for rid when it's not in effect yet (reboot would make i
t
> > > > work again). I have also seen the reverse where a person adds loopback
> > >1 to
> > > > router so router id changed to loopback1 when router gets rebooted next
> > >time
> > > > which really mess things up especially if you are using virtual links.
> > > > * Make sure that when you do show ip ospf vir that your hello and dead
> > > > timers are same.
> > > > * Check to make sure you do not have a routing loop. Are you doing
> > > > redistribution of any routing protocols? If so, try putting filter to
> > > > prevent that loopback from being redistributed just to test this.
> > > >
> > > > > Tin T. Bui
> > > > > Senior Network Manager
> > > > > Network Management Center
> > > > > SBC Services Inc.
> > > > > 7337 Trade Street, Rm 1110
> > > > > San Diego, Ca 92121
> > > > > Office #: 858-886-4644/858-886-4589
> > > > > Pager #: 858-494-0482
> > > > > Fax #: 858-549-4103
> > > > > Email: tb4565@sbc.com
> > > > >
> > > >
> > > > -----Original Message-----
> > > > From: Johnny Gorham [mailto:jgorham@cisco.com]
> > > > Sent: Wednesday, January 03, 2001 6:41 AM
> > > > To: Vijay Venkatesh
> > > > Cc: chrish@bjen.com; ccielab@groupstudy.com
> > > > Subject: Re: OSPF virtual-link question
> > > >
> > > > I did something very similar on yesterday and reload of all routers was
> > >my
> > > > friend.
> > > >
> > > > Vijay Venkatesh wrote:
> > > >
> > > > > Yes yes I have all this setup fine. When I do a sh ip ospf data on r8
> > > > > the network 150.150.100.0/24 shows as a summary as lsa 5. But it does
> > > > > not put this into the routing routing table. r6 sees this network fin
e
> > > > > with a /32. Debugs are useless and not really informative. The virt
> > > > > link is up and I see all routes on r8 except for this one network.
> > > > > ANy thoughts ?
> > > > > Vijay
> > > > >
> > > > > ChrisH wrote:
> > > > > >
> > > > > > OSPF area 100 and 20 connect directly to Area 0. Area 10 needs to g
o
> > > > through
> > > > > > Area 100 to get to Area 0. Therefore, you should have a statements
> > >that
> > > > > > looks like:
> > > > > >
> > > > > > R6:
> > > > > > area 100 virtual-link x.x.x.x( R1's RID)
> > > > > >
> > > > > > R1:
> > > > > > area 100 virtual-link y.y.y.y (R6's RID)
> > > > > >
> > > > > > In R3, I assume that you have something that looks like:
> > > > > >
> > > > > > router ospf 100
> > > > > > network 150.150.100.1 0.0.0.0 area 20
> > > > > >
> > > > > > I am not aware of any IOS bugs related to this issue.
> > > > > >
> > > > > > Chris
> > > > > > -----Original Message-----
> > > > > > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf
> > >Of
> > > > > > Vijay Venkatesh
> > > > > > Sent: Tuesday, January 02, 2001 9:08 PM
> > > > > > To: ccielab@groupstudy.com
> > > > > > Subject: OSPF virtual-link question
> > > > > >
> > > > > > Here is the situation
> > > > > >
> > > > > > r8 ---- r6 ------r1----r3 ---- network 150.150.100.1/24 (loop 0)
> > > > > >
> > > > > > Between r1 and r3 is area 0
> > > > > > between r6 and r1 is area 100
> > > > > > between r8 and r6 is area 10
> > > > > > r3's loop 0 is in area 20
> > > > > >
> > > > > > area 100 has a ospf virt link between r6 and r1
> > > > > > The ospf virt link is up
> > > > > >
> > > > > > The problem
> > > > > > -----------
> > > > > > r3's loop0 is 150.150.100.1/24 and is in area 20. I can every
> > >network
> > > > > > on r8 except for the 150.150.100.1 network. What is the problem ? I
s
> > > > > > there something special when sending loopbacks across virtual links
> > >?
> > > > > > Is this an IOS issue ?
> > > > > >
> > > > > > Router versions
> > > > > > ---------------
> > > > > > all routers are running 11.2.19 IOS
> > > > > >
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