RE: OSPF /28 to IGRP /24

From: David Anderson (dma@xxxxxxxxx)
Date: Thu May 24 2001 - 13:43:21 GMT-3


   
I think there are a couple of solutions here. First, if you wish to go the
route of using a loopback interface, you can take one of your OSPF routers
that is not currently part of the network you wish to summarize and create
a loopback interface on it and add it to an OSPF process. Then you can
summarize that loopback to a /24 (you can use area-range) and it will show
up on your IGRP router. I personally think this is a bit more messy than
what was talked about through the string of emails regarding this. I would
use a summary-address on the ASBR router and summarize the /28 network to a
/24. You do not have to add any extra OSPF processes, or loopback
interfaces. I personally think adding more to the lab than what they all
ready have in store for you (additional routing processes,
interfaces...etc) could end up being a bad thing.....
David

At 08:56 AM 5/24/2001 -0700, Luke M wrote:
>but how do configure a summary address say from IGRP to point to a loopback?
>
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
>alain faure
>Sent: Thursday, May 24, 2001 8:49 AM
>To: ccielab@groupstudy.com
>Subject: RE: OSPF /28 to IGRP /24
>
>
>Hello
>
>Not point to Null 0 ok, but to a loopback maybe that can do the thing ?
>
>best regards
>
>--- Luke M <luke.mendoza@home.com> a icrit : > Thisi s a very good question!
> >
> > A friend of mine told me to work on a scenario where I am suppose to
> > summarize without the routing protocol to point to null 0. I told him he
> > was on crack since that's a safety feature in a protocol...
> >
> > Is this even possible?
> >
> > PLEASE HELP! Its driving me crazy!
> >
> > Jon
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> > JAY
> > Sent: Wednesday, May 23, 2001 9:49 PM
> > To: David Anderson; ccielab@groupstudy.com
> > Subject: Re: OSPF /28 to IGRP /24
> >
> >
> > Just to add more salt to the wound...is it possible to summarize OSPF and
> > EIGRP without pointing the route to null0???
> > ----- Original Message -----
> > From: David Anderson <dma@cisco.com>
> > To: <ccielab@groupstudy.com>
> > Sent: Wednesday, May 23, 2001 9:01 PM
> > Subject: OSPF /28 to IGRP /24
> >
> >
> > > Thanks again to everyone who took their time to help me out with this.
> > >
> > > I loaded a new IOS version (12.0 (7)T ) and it worked right away. The
> > > answer was the to redistributed connected subnets on the ASBR and create
>a
> > > summary address, shortening the /28 network to a /24. The IGRP router
> > > immediately had the new /24 summary-address in the routing table.
> > >
> > > David
> > > David Anderson
> > > Network Design Engineer
> > > Enterprise Solutions Architecture & Design
> > > (408) 853-5515
> > > dma@cisco.com
> > > | |
> > > ..:|||||||:...:|||||||:..
> > > C I S C O S Y S T E M S
> > > **Please read:http://www.groupstudy.com/list/posting.html
> > **Please read:http://www.groupstudy.com/list/posting.html
> > **Please read:http://www.groupstudy.com/list/posting.html
>=====
>------------------------------------------------------------
>alainfaure@yahoo.fr
>Computing networks & internet specialist
>Certified Cisco(ccna,ccnp),Microsoft(mcse),Novell(cna)
>tel./fax. 33 (0)1 45 87 95 07 PARIS(FRANCE)
>------------------------------------------------------------
>



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