Only when the reloading the router or doing copy/paste no router ospf id,
then router ospf id
>From: Marty Adkins <[EMAIL PROTECTED]>
>Reply-To: Marty Adkins <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>CC: "Howard C. Berkowitz" <[EMAIL PROTECTED]>
>Subject: Re: Router ID in OSPF
>Date: Fri, 22 Dec 2000 11:01:35 -0500
>
>"Howard C. Berkowitz" wrote:
> >
> > >Hi everybody:
> > >I am study BSCN,there are something confused me:
> > >in the book they says:The highest IP address on an active interface is
> > >normally used as the router ID, but this can be overridden by
>configuring an
> > >IP address on a loopback interface.
> > >I want to know which will be the Router ID if the loopback IP address
> > >smaller than the active interface IP address?
> > >Any suggestion will be appreciate,thanks.
> > >
> > >Will Guan
> > >frome Peking, China
> >
> > If there are multiple loopback, the router ID will be the numerically
> > highest IP address on any loopback. In other words,
> [snip]
>And the part that some folks forget is that once a router ID is active,
>it will not change if another interface is made active, or the IP of
>another interface is changed to a higher value. The rationale is
>stability, since all other routers in the area are tracking this one
>by its present router ID. The same principle applies to the DR election
>-- there is no coup option.
>
>Now if you were to shut down the interface with the existing router ID...
>
> Marty Adkins Email: [EMAIL PROTECTED]
> Mentor Technologies Phone: 410-280-8840 x3006
> 275 West Street, Plaza 70 WWW: http://www.mentortech.com
> Annapolis, MD 21401 Cisco CCIE #1289
>
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