From: Phil (theccie@gmail.com)
Date: Fri Jun 04 2004 - 21:37:11 GMT-3
John,
You can call me redistribution nuts, but I always use the route-maps,
even when they are not necessary:
NO TAG:
(when redistributing with IGP that do not support Tags)
access-list 1 permit 172.16.5.0 0.0.0.255
access-list 1 permit 172.16.56.0 0.0.0.255
access-list 1 permit 172.16.35.0 0.0.0.255
(RIPv1 routes)
route-map only-rip permit 10
match ip address 1
route-map no-rip deny 10
match ip address 1
route-map no-rip permit 20
router igrp 10
redistribute ospf 5 metric 1 1 1 1 1 route-map no-rip
router ospf 5
redistribute igrp 10 subnets route-map only-rip
----------------------------------------------------------
TAG:
route-map eigrp2ospf deny 10
match tag 110
route-map eigrp2ospf permit 20
set tag 90
route-map ospf2eigrp deny 10
match tag 90
route-map ospf2eigrp permit 20
set tag 110
router eigrp 100
reditribute ospf 5 metric 1 1 1 1 1 route-map ospf2eigrp
router ospf 5
redistribute eigrp 100 subnets route-map eigrp2ospf
HTH,
Phil
On Fri, 4 Jun 2004 02:20:19 -0700, john matus <jmatus@pacbell.net> wrote:
>
> got a question regarding redistribution between igp's....
> when you redistribute between, say, ospf and rip on the topology below
>
> rip rip/ospf ospf
> ----R1--------------------------R2----------------------------R3---
>
> is it the norm to apply a route-map on R2 that would specifically permit
> routes from r1 or r3? for example, lets say you had a loopback address and an
> ethernet subnet attached to R1 under rip, should you configure r2 as follows?
>
> router ospf
> redistribute rip sub route-map rip2ospf
>
> route-m rip2ospf permit 10
> match ip address 1
>
> access-l 1 permit <lo0>
> access-l 1 permit <e0> ?
>
> it seems to me that you would only do something like this if you were
> specifically trying to avoid redistributing specific routes, but in the case
> that you are not denying any prefixes, what is the advantage, if any, by doing
> this <avoiding routing loops possibly?....something else?>
> i've always done my redistribution without the route-maps so i'm curious about
> the ideology <i'm using ipexperts lab manual tonight and they go route-map
> CRAZY!!!>
>
> thanks in advance for your input!
>
> Regards,
>
> John D. Matus
> MCSE, CCNP
> 818.782.2061 office
> 818.430.8372 mobile
> jmatus@pacbell.net
>
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