From: Chris Larson (clarson52@xxxxxxxx)
Date: Sun Dec 16 2001 - 15:53:49 GMT-3
I have seen posts saying that summary-address does not work in 12.1 or 12.2?
I have 12.0 still and am using it for my studies until I can upgrade. I am
wondering about this summary-address thing. I have read the caveats and do
not see it mentioned so I feel that it has to work or Cisco would have
surely mentioned it but keep seeing posts that say otherwise.
Can you shed some light on this?
----- Original Message -----
From: "EA Louie" <elouie@yahoo.com>
To: "Lupi, Guy" <Guy.Lupi@eurekaggn.com>; <ccielab@groupstudy.com>
Sent: Thursday, December 13, 2001 11:31 PM
Subject: Re: OSPF to IGRP redistribution
> did you try breaking the /22 into 4 area ranges? It's messy, but I'm
> betting it would work
>
> ----- Original Message -----
> From: "Lupi, Guy" <Guy.Lupi@eurekaggn.com>
> To: "'EA Louie '" <elouie@yahoo.com>; <ccielab@groupstudy.com>
> Sent: Thursday, December 13, 2001 8:10 PM
> Subject: RE: OSPF to IGRP redistribution
>
>
> > This appears to be a solution designed for when the OSPF subnet is
> smaller,
> > such as getting a /28 from OSPF to a /24 in IGRP, and they are not part
of
> > the same classful network. This works no problem for me using either
the
> > summary-address or area range command, thanks for the link.
> > I am trying to put a route of 147.1.77.0/24, which is a subset of the
> > 147.1.76.0/22 that is actually on the interface. It might help if I
give
> a
> > more detailed explanation.
> > I have a frame cloud, each interface on the frame cloud is
147.1.77.x/22,
> > these are in OSPF. I have an IGRP router connected to one of the OSPF
> > routers, it's interface IP is 147.1.5.1/24. So, the OSPF router will
not
> > send 147.1.76.0/22 down to the IGRP neighbor because the subnet mask is
> > larger than that on the IGRP interface and they are part of the same
major
> > network. I tried making the ospf router an ABR and using area range,
> still
> > doesn't work, I have tried it using 147.1.77.0/24, and 147.1.64.0/19,
> > neither of them get advertised to the IGRP router. Anyone know of a way
> to
> > get these routes in if they are part of the same major network? This
> would
> > break one of the rules of IGRP, so I am wondering if it can be done,
this
> is
> > from a fatkid.com lab that gives the solution as the summary-address
> > command, which doesn't work in recent IOS. Thanks.
> >
> > -----Original Message-----
> > From: EA Louie
> > To: Lupi, Guy; ccielab@groupstudy.com
> > Sent: 12/13/2001 8:53 PM
> > Subject: Re: OSPF to IGRP redistribution
> >
> > Steve Feldberg gave us an elegant solution using 'area range' and the
> > only
> > catch was the introduction of an additional area (making the ASBR an ABR
> > as
> > well). The summary-address command works okay in 12.0, but not in 12.1,
> > and
> > apparently, not in 12.2 either.
> >
> > here's the link
> > http://www.groupstudy.com/archives/ccielab/200112/msg00148.html (watch
> > the
> > URL wrap)
> >
> > ----- Original Message -----
> > From: "Lupi, Guy" <Guy.Lupi@eurekaggn.com>
> > To: <ccielab@groupstudy.com>
> > Sent: Thursday, December 13, 2001 5:14 PM
> > Subject: OSPF to IGRP redistribution
> >
> >
> > > Ok, before I start I have searched the archives and found 2 solutions,
> > one
> > > works in my lab and one does not. Here is the setup, one router
> > running
> > > OSPF and IGRP, it is an ASBR. One router running IGRP only. One of
> > the
> > > interfaces on the ASBR is in 147.1.76.0/22, the interface connected to
> > the
> > > IGRP router is in 147.1.5.0/24. Now I know that because they are part
> > of
> > > the same classful network and the subnets are not the same the OSPF
> > router
> > > will not advertise the 147.1.76.0/22 network. I found 2 solutions to
> > this,
> > > a "summary-address 147.1.77.0 255.255.255.0" in the OSPF config which
> > does
> > > not seem to work for me, and the other solution is a route map on the
> > IGRP
> > > only router specifying the next hop address for the networks that I am
> > > trying to reach. While the route map works, it does not put the
> > routes in
> > > the routing table on the IGRP router. I have heard that on some IOS
> > > versions the summary address command does not work for redistribution,
> > I
> > am
> > > running 12.2(1b) on both routers. Sorry to open this can of worms
> > again,
> > > any help is, as always, appreciated.
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