Re: [nsp] ospf link

From: Dhiman Barman (dhiman@cs.bu.edu)
Date: Thu Mar 28 2002 - 19:50:29 EST


Kevin,
        I am sorry I was using 192.168.3.1 and 192.168.3.2 on the two
interfaces. These are class C addresses with the same netids. I
believe, each one was finding the other interface belonging to the
same network/subnet.

-dhiman

Kevin Thorngren claims the following:
> Dhiman,
>
> Directly connected interfaces have a lower administrative distance than
> routing protocols. My guess is that R3 is routing via the directly
> connected interface, assuming that I33 and I22 are on the same IP subnet,
> and not via OSPF.
>
> Harold is correct, they shold be in the same area. They will never become
> adjancent and effectively creating two different OSPF domains.
>
> Kev
>
>
> > -----Original Message-----
> > From: Harold Ritter [mailto:hritter@cisco.com]
> > Sent: Thursday, March 28, 2002 7:56 AM
> > To: dhiman@cs.bu.edu
> > Cc: cisco-nsp@puck.nether.net
> > Subject: Re: [nsp] ospf link
> >
> >
> > Dhiman,
> >
> > I'm not too certain what your topology is but R3 and R2 should have their
> > respective directly connected interface in the same area. Can you tell us
> > more about your topology.
> >
> > At 06:52 AM 3/28/2002 -0500, Dhiman Barman wrote:
> > >Hi,
> > > I cannot explain this:
> > >
> > > B1-----------------------------------B6
> > > |
> > |
> > > R1-B2-----------B4-R2-I22------II33--R3
> > > | Area 1
> > Area 2
> > > B3
> > >
> > >
> > > Interface I22 and Interface I33 belong to different areas although
> > >connected physically. On configuring OSPF (Bs denote Area 0),
> > >I traceroute from R3 to I22 and the route shows that packets
> > >go directly from R3 to interface I22 w/o entering backbone.
> > >
> > >
> > >Why should this happen ?
> > >
> > >
> > >dhiman
> >
> > Harold Ritter, CCIE 4168
> > Advanced Network Services - ISP East
> > Cisco Systems
> > 300 Apollo Drive
> > Chelmsford, MA 01824 USA
> > Phone: 978 497 3129
> > Fax: 978 497 3129
> > Cisco Systems- "Empowering the Internet Generation."
> >
> >
>

-- 
When does summertime come to Minnesota, you ask?  Well, last year, I
think it was a Tuesday.



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