From: Eric Fairfield (ericfair@xxxxxxxxxx)
Date: Tue Aug 22 2000 - 21:16:46 GMT-3
You are correct, but it will take the highest loopback address. You can fix
the router-id in 12.x to specify a router-id. New feature.
----- Original Message -----
From: David <d.ankers@cable.a2000.nl>
To: Eric Fairfield <ericfair@chorus.net>; Sam Munzani <sam@chinet.com>; Tony
Medeiros <tonygreat@home.com>
Cc: peter brown <pita40@hotmail.com>; <ccielab@groupstudy.com>
Sent: Tuesday, August 22, 2000 4:16 PM
Subject: Re: Loopback & OSPF
> Going back to router ID, I was under the impression that OSPF would use
the
> highest interface ip as address for it's router ID UNLESS a loopback was
> configured and then this is used regardless of the fact that it might not
be
> the hishest IP address configured on the router.
>
> Is my memory failing me?
>
> Dave.
>
>
>
> ----- Original Message -----
> From: "Eric Fairfield" <ericfair@chorus.net>
> To: "Sam Munzani" <sam@chinet.com>; "Tony Medeiros" <tonygreat@home.com>
> Cc: "peter brown" <pita40@hotmail.com>; <ccielab@groupstudy.com>
> Sent: Tuesday, August 22, 2000 9:02 PM
> Subject: Re: Loopback & OSPF
>
>
> > You would loose your virtual links if a different address takes over the
> > RID. To fix/deal with this you change your Virtual link configuration
of
> if
> > you have 12.x code you manually set the Router ID so it becomes a
> non-issue
> > if you add a new interface.
> > ----- Original Message -----
> > From: Sam Munzani <sam@chinet.com>
> > To: Tony Medeiros <tonygreat@home.com>
> > Cc: peter brown <pita40@hotmail.com>; <ccielab@groupstudy.com>
> > Sent: Tuesday, August 22, 2000 1:34 PM
> > Subject: Re: Loopback & OSPF
> >
> >
> > > I understand that. What would you do if lab instructions specifies not
> to
> > > use any loopback interfaces unless specified. What happens after
reboot?
> > >
> > > On Tue, 22 Aug 2000, Tony Medeiros wrote:
> > >
> > > > Nope, It doesn't need to in the OSPF process. It just needs to be
in
> > an
> > > > "up" and "up" condition. OSPF picks the highest "active" interface
to
> > be
> > > > the router ID. If you configure a higher address later it won't
> change
> > the
> > > > router ID however unless you restart OSPR neighbor negotiation, i.e.
> > reload
> > > > or shut/no shut the interfaces. This isn't a big deal unless
you've
> > > > configured virtual links with use router ID's as anchor points.
> > > > Take care,
> > > > Tony Medeiros
> > > >
> > > > ----- Original Message -----
> > > > From: "peter brown" <pita40@hotmail.com>
> > > > To: <ccielab@groupstudy.com>
> > > > Sent: Tuesday, August 22, 2000 6:02 AM
> > > > Subject: Loopback & OSPF
> > > >
> > > >
> > > > > If I have loopback int. for router id in ospf, do I need to add
> that
> > int.
> > > > > to an area. Is it necessary to add a network statement for that
> > loopback
> > > > > int. address?
> > > > >
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