RE: Interesting question - I saw recently

From: Biggs, Jeff \(M/CIO/BIE\) (JBiggs@usaid.gov)
Date: Mon Dec 10 2007 - 09:00:24 ART

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So if I read this right, the HUB will need to run IP OSPF NETWORK
POINT-to-MULTIPOINT for the scenario to work?

Jeffrey Biggs
Sr. Network Engineer
USAID
M/CIO/BIE
240-646-5003
jbiggs@usaid.gov

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Darby Weaver
Sent: Friday, December 07, 2007 9:39 PM
To: Bob Sinclair
Cc: Cisco certification
Subject: Re: Interesting question - I saw recently

This is the correct asnwer. Thanks Bob, you are a
master, no doubt in my mind. :)

However, my scenario was slightly varied.

I had a physical interface on the hub with ospf "ip
ospf network point-to-multipoint" and both my spokes
were using physical interfaces with "ip ospf network
point-to-point" statements. (I think this would be the
same condition as you mentioned).

By changing my ip ospf network type on the spoke
network this condition was resolved.

Your explanation is correct. I think I checked
everything and even my debugs yielded no meaningful
answer for this one.

However, your explanation does.

Some other observations:

The Hub and only spoke both reported the messages in
the email I sent. The other spoke reported no errors
at all.

The interfaces on either router reported no errors or
resets do this condition.

A continuous ping never dropped a packet from either
router.

However, the adjacency did change states when I use a
"sh ip ospf interface" command.

Pretty simple fix overall but interesting situation to
be aware of in any event.

Let me know if I said anything incorrectly please.

Thanks again Bob.

:)

Darby

--- Bob Sinclair <bob@bobsinclair.net> wrote:

> Darby Weaver wrote:
> > Resetting OSPF neighbors on frame relay.
> >
> Hi Darby,
>
> Is this the problem you are referring to?
>
>
http://www.groupstudy.com/archives/cisco/200601/msg00046.html
>
>
> --
>
>
> Bob Sinclair CCIE 10427 CCSI 30427
> www.netmasterclass.net

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