From: Justin Menga (Justin.Menga@xxxxxxxxxxxxxxxxxx)
Date: Mon Oct 30 2000 - 21:04:38 GMT-3
If RA is running both routing processes, yes, if you just use redistribute
rip subnets metric x under ospf, all RIP routes will be redistributed into
OSPF as E1 or E2.
If you are performing mutual redistribution, these routes will then be
redistributed back into RIP. Depending on your metrics, these routes may
override the correct original RIP routes, so when doing mutual
redistribution it is BEST to create filters that allow in only the networks
from each route domain that are required. This then prevents route
'feedback'.
You generally don't have these issues with DV protocols, as split horizon
prevents the redistributed route being fed back.
Regards,
Justin Menga MCSE+I CCNP CCSE ASE
WAN Specialist
Computerland New Zealand
PO Box 3631, Auckland
DDI: (+64) 9 360 4864 Mobile: (+64) 25 349 599
mailto: justin.menga@computerland.co.nz
-----Original Message-----
From: tom cheung [mailto:tkc9789@hotmail.com]
Sent: Tuesday, 31 October 2000 10:53 a.m.
To: ccielab@groupstudy.com
Subject: route redistribution
Will someone please clear my confusion as to when to use ditribution list
when redistribute from one routing protocol to another? For example, RA is
running ospf and rip and is doing mutual redistributioin. When I inject rip
routes into ospf domain, these routes will show up as ospf E1 or E2 routes.
Correct me if I am wrong, when RA redistribute ospf back to rip, the
original igrp routes will be installed in RA's routing table as ospf routes
rather than rip routes because of ospf's better admin distance. Does it
mean that distribution list should always be used when doing mutual
redistribution to prevent route feedback?
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