[j-nsp] Problems with OSPF stub area (Juniper and Cisco)
08 Nov 2002 08:50:26 +0200
Avram Dorfman <firstname.lastname@example.org> writes:
> On Wednesday, November 6, 2002, at 01:31 AM, Matti Saarinen wrote:
> > No, I don't have such a route. But, now I looked at Cisco's
> > configuration again and noticed the the following command
> > under the atm interface's configuration.
> > ip ospf network broadcast
> I believe that makes it pretend that the interface is a broadcast,
> causing a different representation in the LSDP, DR election, and
> type2 LSA generation, etc.
Yes, that's what it does.
> I'm a little surprised the adjacency became full, with the two
> routers disagreeing on the link type.
So am I. Unfortunately I cannot check the configuration the Cisco
at the other end of the ATM PVC has but I think it must have the
same conf as the Cisco at our end has eg. ip ospf netowrk
broadcast. I did set up a similar configuration just to debug
things. When the Cisco I used had interface configured as
broadcast the OSPF adjcency state machine got stuck at the
ExStart state. Everything worked fine when I removed the
> I'd love to see the router LSA's for those two routers, while that
> command is active.
I can try to capture that for you. I already contacted the
university who administrates that router and asked them to check
their configuration. It is always possible that there's a some
soft of software bug which doesn't show up between two Ciscos.
> I suggest that you are better off having the routes. Can you add a
> /32 from the range to a loopback somewhere? More importantly, why do
> you need this route in OSPF if there are no destinations from it in
> the area?
I'm sorry but I don't understand. There is a /25 which belongs to
that area and it doesn't show up in the forwarding table. That's
the problem I have. I'm sure it'll go away when somebody checks
the Ciscos configuration.
Cheers and thanks,
Matti Saarinen, Tampere University of Technology / Network Administration
Phone: +358 3 3115 3337 # Address: P.O. Box 692
Fax: +358 3 3115 2172 # FIN-33101 Tampere
Email: email@example.com # Finland