From: Wu, Jiang (wujiang@xxxxxxxxx)
Date: Sat Dec 02 2000 - 07:47:48 GMT-3
It works on 11.3(11a)T1 but not on 12.0(13). Seems to be a dated function?
Wu
----- Original Message -----
From: Erick B. <erickbe@yahoo.com>
To: George Zhang <gyzhang@bigfoot.com>; Chuck Larrieu <chuck@cl.cncdsl.com>
Cc: Wu, Jiang <wujiang@bj163.com>; <ccielab@groupstudy.com>
Sent: Saturday, December 02, 2000 6:13 PM
Subject: Re: OSPF Lab - RID behavior
> This works as well. Just tried it on 12.0(5) Mainline
>
> All you need to do is shutdown the interface. OSPF
> will start using the highest active IP address
> automatically or if you shutdown all your IP
> interfaces, it spits out this error over and over
> again which is expected.
>
> 2w2d: %OSPF-4-NORTRID: Could not allocate router ID
>
> - Erick
>
> 24d: %VOTE-2000: Counting error in FL, USA
>
> --- George Zhang <gyzhang@bigfoot.com> wrote:
> > If you configured OSPF before you configured an loop
> > back interface, the RID will be
> > the ip address of a physical interface. Then, after
> > you configuring an loopback
> > interface, you can do shut/no shut on the physical
> > interface that has the RID as its
> > ip address. By doing so, the RID will be changed to
> > the ip address of the loopback
> > 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
>
>
>
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