RE: igrp redistibution problem, please help

From: Guoqi Cui (guoqicui@yahoo.com)
Date: Fri Sep 20 2002 - 15:10:54 GMT-3


Jihene:

Since the routes from ospf have longer net mask, you
do not need to use tunnel.

If you use secondary addresses, use them on the
interface of R2 facing the ospf domain, not between R1
and R2.

Another way need to understand where the /24, /27 /29
routes come from? If they are from other areas, use
are range for that area, if they are redistributed
from other protocol, use summary adress in asbr, if
they are from the same area that R2's ospf interface
belongs to, there are two options:
1. in the other router that share the same network
with R2 "redistribute connect " and " summary the
redistributed route to /24",

2. In R2, run another ospf process opsf 500,
redistribute the 1st ospf route in the second one and
summary the routes to /24, and redistribute the route
to igrp.

Let me know your result.

Good luck!

Guoqi

 

   

--- Jihene Bouraoui <BouraouiJ@globalknowledge.net>
wrote:
> thanks for your help!!!
> but even when doing this, interfaces on R2 that are
> /27 subnetted are not
> advertised to R1, so?
>
> -----Original Message-----
> From: Bob Sinclair
> To: Jihene Bouraoui; ccielab@groupstudy.com
> Sent: 20/09/2002 13:04
> Subject: Re: igrp redistibution problem, please help
>
> Jihene,
>
> You may be running into the problem of having two
> tunnels with the same
> source and destination. I believe this is not
> supported. Try this:
> one tunnel with two addresses (one /27, one /29)
> using the "secondary"
> syntax on the second one.
>
> Split horizon problems may result in routes becoming
> "possibly down".
> Put a distribute-list out on the the R1 side of the
> tunnel denying any.
>
> -Bob
>
> ----- Original Message -----
> From: "Jihene Bouraoui"
> <BouraouiJ@globalknowledge.net>
> To: <ccielab@groupstudy.com>
> Sent: Friday, September 20, 2002 6:14 AM
> Subject: igrp redistibution problem, please help
>
>
> > Hi,
> >
> > i become crazy with a redistribution problem
> between ospf and igrp.
> >
> > R1 ---(/24)----r2---(/24, /27, /29)
> >
> > I run igrp between R1 and R2 on a subnet /24, and
> I have to
> redistribute
> > routes subnetted in /24, /27 and /29 learned
> through ospf on R2,
> actually,
> > rotes in /27 and /29 will not apeear on r1 ans
> taht's normal,
> > so i cerated 2 tunnels between routers, first one
> in /27 address and
> second
> > one in /29,
> > on my R1 RT, i can find /29 routes but no /27
> routes, an ip igrp
> events
> > debug shows that the router is receiving packets
> sourced from R2 /29
> > interface on its own /27 interface so packets are
> invalid.
> > this was my fisrt attempt and i don't know why it
> doesn't work,
> > the second solution is to put secondary addresses
> on R1 and R2
> interfaces,
> > and here appears another problem: all the routes
> larned on R1 are /29
> > subnetted, even native routes in /24 on R2 and i
> still don't
> anderstand
> > why.
> >
> > summary routes and static routes are not allowed,
> please anyone can
> help?



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