From: George Zhang (gyzhang@xxxxxxxxxxx)
Date: Sat Dec 02 2000 - 04:46:16 GMT-3
If you configured OSPF before you configured an loop back interface, the RID wi
ll be
the ip address of a physical interface. Then, after you configuring an loopbac
k
interface, you can do shut/no shut on the physical interface that has the RID a
s its
ip address. By doing so, the RID will be changed to the ip address of the loop
back
interface. At least, it worked for me the other day (with IOS 11.3). Correct
me if I
am wrong.
George Zhang
Chuck Larrieu wrote:
> Jiang, I'm running IOS 12.1 in my lab. Clear IP OSPF process does not clear
> out bad or old RID information
>
> Various experiments over the last couple of days, both as a result of this
> thread and private conversations, led to my discovery that blowing out the
> OSPF configuration completely, then rebuilding it, will remove the bad
> information ( such as a bad neighboring RID ). And so will reloading the
> router. But once RID's are learned, at least in what I have seen so far, it
> is hell getting "rid" of them.
>
> Chuck
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Wu,
> Jiang
> Sent: Friday, December 01, 2000 9:00 PM
> To: ccielab@groupstudy.com
> Subject: Re: OSPF Lab - DR behaviour with loopbacks WAS: RE: question
about
> loopback interfaces
>
> In some ios versions (maybe 12.0 GD), you can use "clear ip ospf process"
> command to restart OSPF.
>
> Wu
>
> ----- Original Message -----
> From: Tony Olzak <aolzak@buckeye-express.com>
> To: <erickbe@yahoo.com>; Chuck Larrieu <chuck@cl.cncdsl.com>; Louie Belt
> <louieb@netmatter.com>; 'CCIE_Lab Groupstudy List' <ccielab@groupstudy.com>;
> <cisco@groupstudy.com>
> Sent: Saturday, December 02, 2000 5:16 AM
> Subject: Re: OSPF Lab - DR behaviour with loopbacks WAS: RE: question about
> loopback interfaces
>
> > I usually just reboot routers on the fly and work on something else while
> > that router is rebooting.
> >
> >
> > Tony
> >
> > ----- Original Message -----
> > From: "Erick B." <erickbe@yahoo.com>
> > To: "Tony Olzak" <aolzak@buckeye-express.com>; "Chuck Larrieu"
> > <chuck@cl.cncdsl.com>; "Louie Belt" <louieb@netmatter.com>; "'CCIE_Lab
> > Groupstudy List'" <ccielab@groupstudy.com>; <cisco@groupstudy.com>
> > Sent: Friday, December 01, 2000 3:35 PM
> > Subject: Re: OSPF Lab - DR behaviour with loopbacks WAS: RE: question
> about
> > loopback interfaces
> >
> >
> > > If you remove the router ospf configuration and paste
> > > it back, OSPF will restart with a new router ID if you
> > > have a new high IP address. You can only do this in a
> > > test/non-production network environment though. I've
> > > done this before in my labs because it is faster then
> > > waiting for the router to reboot.
> > >
> > > > And you are right, the RID doesn't change at all
> > > > without rebooting the
> > > > router. But, what do most techs do when a link is
> > > > having problems? Reboot
> > > > the routers. Now your RID will change.
> > > >
> > > > Tony
> > >
> > >
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 08:25:57 GMT-3