From: Stephen C. Feldberg (scfeldberg@xxxxxxxxxxx)
Date: Sun Dec 23 2001 - 12:35:19 GMT-3
The area range will work in this scenario only when the ASBR is also an ABR-
make sure your redistributing router has a non-backbone area assigned
locally.
Steve
----- Original Message -----
From: "Bryan Ginman" <ginmanb@westnet.com>
To: "Kirby, Ron" <Ron.Kirby@getronics.com>; <ccielab@groupstudy.com>
Sent: Friday, December 21, 2001 6:07 PM
Subject: RE: OSPF to IGRP redistrib - How to summarize area 0 routes?
> Well I just did a test on 3 routers running in a frame cloud
> (R5(multipoint)---R2, R5---R3) running OSPF area 0 w/28, then R3(Token
> Ring)---R4 running RIP1 w/24. Ran a area 0 range to make it into a /24 and
> redist into rip.
>
> Finding : No Dice on 12.1(11)
> it redist' the /32 for the multipoint addresses but does not so on the
> summary. I was pretty sure of this but this confirms it.
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> Kirby, Ron
> Sent: Friday, December 21, 2001 2:53 PM
> To: ccielab@groupstudy.com
> Subject: RE: OSPF to IGRP redistrib - How to summarize area 0 routes?
>
>
> My redistribution router is running "System image file is
> "flash:c3620-js-mz.121-11.bin""
>
>
> Ron Kirby
> CCNP, MCSE, CNA
> Network Engineer
> Getronics, Houston ESC
> 713-852-5567 / 832-256-5403
> ron.kirby@getronics.com
>
> This e-mail message and any attachments are confidential and may be
> privileged. If you are not the intended recipient, please notify me
> immediately by replying to this message and please destroy all copies of
> this message and attachments. Thank you.
>
>
>
>
>
> -----Original Message-----
> From: tom cheung [mailto:tkc9789@hotmail.com]
> Sent: Friday, December 21, 2001 1:20 PM
> To: Ron.Kirby@getronics.com; tlarus@mwc.edu; ccielab@groupstudy.com
> Subject: RE: OSPF to IGRP redistrib - How to summarize area 0 routes?
>
>
> Ron,
> The area range for area 0 only works on older IOS. I don't that works on
> 12.1, which is IOS in the lab now.
>
> Tom
>
>
> >From: "Kirby, Ron" <Ron.Kirby@getronics.com>
> >Reply-To: "Kirby, Ron" <Ron.Kirby@getronics.com>
> >To: "'Thomas Larus'" <tlarus@mwc.edu>, ccielab@groupstudy.com
> >Subject: RE: OSPF to IGRP redistrib - How to summarize area 0 routes?
> >Date: Fri, 21 Dec 2001 12:33:30 -0500
> >
> >The "area range" command will summarize a backbone net into an IGRP AS.
I
> >did a lab similar to this 2 days ago. The IGRP AS was a /24 and the
frame
> >network, which was the ospf area 0 was a /28. I also had /32's from some
> >loopbacks that had to go into the IGRP AS as well. I played with various
> >ways to do it. First, I had a Class C network hanging off another
router,
> >so I created a default route to that classful network on the IGRP-only
> >router and I could ping everything in the OSPF system, even though the
> >frame
> >and loopback addresses were not in the routing table. I suspect this
would
> >not be acceptable though, as this is a "default-route", it just doesn't
use
> >the quad-zero entry in the routing table, but it does work. Next I added
> >the "ip ospf network type" command to the loopbacks and used the "area
> >range" command at the redistribution point, summarizing the /28 to a /24.
> >The loopbacks appeared at the IGRP router as /24s, but not the /28s. I
had
> >to add the null route to the config on the redistribution router (as
> >explained by Doyle in V1) and then it worked fine, both the loopbacks and
> >the frame network (as a /24) was in the IGRP routing table. But is that
a
> >technical no-no, as it involves a "static route"? If this is a no-no,
what
> >else can you do to get /28s into an IGRP AS using a /24??
> >
> >Ron Kirby
> >CCNP, MCSE, CNA
> >Network Engineer
> >Getronics, Houston ESC
> >713-852-5567 / 832-256-5403
> >ron.kirby@getronics.com
> >
> >This e-mail message and any attachments are confidential and may be
> >privileged. If you are not the intended recipient, please notify me
> >immediately by replying to this message and please destroy all copies of
> >this message and attachments. Thank you.
> >
> >
> >
> >
> >
> >-----Original Message-----
> >From: Thomas Larus [mailto:tlarus@mwc.edu]
> >Sent: Friday, December 21, 2001 11:10 AM
> >To: ccielab@groupstudy.com
> >Subject: OSPF to IGRP redistrib - How to summarize area 0 routes?
> >
> >
> >I am working on basic everyday OSPF to IGRP redistribution. I was able
> >to use area range for the routes I needed to get down to /24 to match
> >the IGRP domains mask. But what if the scenario had been set up
> >differently, and I had had routes within area 0 that had to be
> >summarized to /24 to be redisted into IGRP? Area range summarizes
> >non-backbone areas INTO area 0. Summary-address only works on routes
> >redistributed INTO the OSPF domain. The experts all say that there are
> >two way to deal with the classless to classful redist problemstatic
> >routes and summarization. If it is stated that I cannot use static
> >routes, and the routes I need to summarize are within area 0, what do I
> >do?
> >
> >I can design the network to make sure all the routes that need to be
> >redistributed from OSPF to a classfull routing protocol are in an area
> >other than 0, but what if I am given the situation I have set out?
> >
> >A route-map comes to mind, but I dont see how I can summarize using a
> >route-map, although I can make it so that only routes with a certain
> >mask get redistributed.
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