Re: Newbe question - Relevance of OSPF

Jonathan,

Welcome to the list.

I believe you are referring to the OSPF process ID on a CE router. If the
OSPF process IDs are different your routes may be injected back into OSPF
(from the MPLS network) as external routes instead of inter-area routes.

There is an ok writeup at:

https://learningnetwork.cisco.com/docs/DOC-8648

By the way when the author says "unique" he means "the same" ?!?!?!

Take care,

Paul Borghese

P.S. Try to avoid the same Router ID ... bad things may happen :-).

On Tue, May 3, 2011 at 10:40 AM, Jonathan Smitthers <
jsmitthers2011_at_gmail.com> wrote:

> My first post to the list and I screw it up!!!
>
> Yes I wanted to asked about the process ID, not router ID. See what
> happens
> when I don't have my coffee.
>
> /facepalm
>
> Do the process IDs need to be the same on an MPLS link?
>
> Thanks for the replies,
>
> Jonathan
>
> On Tue, May 3, 2011 at 10:35 AM, Michael Kiefer <mjkiefer_at_gmail.com>
> wrote:
>
> > Jonathan,
> >
> > It's never acceptable to have duplicate router-ids. It leads to database
> > problems, flood wars, and other nastiness. Process ids on the hand are
> > always locally significant.
> >
> >
> >
> > On Tue, May 3, 2011 at 9:33 AM, Jonathan Smitthers <
> > jsmitthers2011_at_gmail.com> wrote:
> >
> >> Hi,
> >>
> >> I am a new member so please excuse the question if it is too easy or
> >> already
> >> been answered 100's of times.
> >>
> >> Normally the OSPF router id is only locally significant. But I seem to
> >> recall reading that the router ID's must match through an MPLS
> connection.
> >> Why? That makes no sense at all! Is the router ID transmitted through
> >> MPLS?
> >>
> >> I appreciate the help and look forward to studying with all of you.
> Today
> >> is day 1 of a long journey!
> >>
> >> Jonathan Smitthers

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Received on Tue May 03 2011 - 18:14:41 ART