Inorder to reflect the new router ID without rebooting ,You can shutdown
your serial 2/1 interface and then bring it up by no shutdown.
Thangavel
----- Original Message -----
From: Erick B. <[EMAIL PROTECTED]>
To: Louie Belt <[EMAIL PROTECTED]>; 'Ejay Hire' <[EMAIL PROTECTED]>;
<[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
Sent: Wednesday, October 18, 2000 5:22 PM
Subject: RE: OSPF Router ID/Loopback interface
> Some minor corrections.
>
> The OSPF process will use the *highest* loopback IP
> address if a loopback interface is configured.
> Otherwise, it uses the *highest* IP address on a
> physical interface. To configure OSPF (router ospf x)
> you need a interface with IP to be in a up/up state.
>
> You can reboot to have the router ID reflected or you
> can remove the OSPF process and add it back.
>
> --- Louie Belt <[EMAIL PROTECTED]> wrote:
> > It will take the loopback address as it's ID, even
> > if it is not the highest
> > IP address on the router. Loopbacks take precedence
> > over higher IP's with
> > respect to Router ID's for OSPF. You will have to
> > reboot your router for
> > this change to be reflected. Once an ID is chosen,
> > it will keep that ID
> > regardless of changes until the router is rebooted.
> >
> > Louie
> >
> >
> >
> >
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED]]On Behalf Of
> > Ejay Hire
> > Sent: Wednesday, October 18, 2000 1:50 PM
> > To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
> > Subject: Re: OSPF Router ID/Loopback interface
> >
> >
> > No, It's the highest Ip on the router.
> >
> >
> > ----Original Message Follows----
> > From: "John Deatherage" <[EMAIL PROTECTED]>
> > Reply-To: "John Deatherage" <[EMAIL PROTECTED]>
> > To: <[EMAIL PROTECTED]>
> > Subject: OSPF Router ID/Loopback interface
> > Date: Wed, 18 Oct 2000 11:15:27 -0700
> >
> > If I add a loopback interface to a router, when will
> > the router take it as
> > the router ID? Here's a scenario:
> >
> > Serial2/1 is the current router ID: 209.1.1.1
> >
> > I add Loopback0, which is 10.0.0.1
> >
> > Shouldn't the router take this as its router ID?
> > When does this happen?
> > Doing:
> >
> > clear ip ospf process
> >
> > Still shows the old router ID. Is there any way to
> > force the router to take
> > the ID from the loopback interface? On another
> > router, I couldn't get it to
> > change until after reload.
> >
> > _________________________________
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