From: frank.yu@japan.bnpparibas.com
Date: Tue Nov 19 2002 - 04:42:55 GMT-3
All,
The scenario is actually quite simple as following:
(Embedded image moved to file: pic27067.pcx)
My question is 135.1.23.0/24 and 135.1.24.0/24 are in ospf domain,should
NOT be in RIP domain. While R1 should have these two routes in his routing
table. ( attn: when you enable rip on R2 by "network 135.1.0.0" , those two
routes will be advertised by rip which means 135.1.23.0/24 and
135.1.24.0/24 are actually in RIP domain.)
Thanks.
Frank
Internet
anld@ispco.com.vn - 11/19/2002 04:09 PM
To: Frank Yu
cc: dennis.d.adekola, ccielab
Subject: Re: is this possible?
Hi Frank,
I think it is possible.
From the border router you can use route maps or distribute lists to
advertise desired subnets via RIP, filter out those should be advertised
via OSPF. And you do the same with OSPF, just advertise subnets and
redistribute to RIP as needed.
Anyway, could you send out the scenario and we will try to make it clearer.
An.
frank.yu@japan.bnpparibas.com wrote:
>All,
>
> Thanks for the idea. Maybe I did not explain it clearly, let me make it
>a bit clear. The requirement is to make all the routers running RIP learn
>the route in OSPF domain by redistribution from OSPF rather than directly
>learning the route by rip advertising from the border router (the router
>running both rip and ospf).
> As we know, RIP is a classful routing protocol, so we can only put
>classful "network x.x.x.x" under "router rip" configuration mode. So if
the
>scenario is class B address with /24 subnetmask all over the place, when
we
>enable rip on the border router, the ip addresses in ospf domain which is
>on the border router also has been included in RIP domain. What bothered
me
>is how can we prevent these ip addresses being included in RIP domain?
>While all routers in RIP domain still need to be able to reach these ip
>addresses in ospf domain by redistribution from ospf on border router. Is
>this possible?
>
> As far as I know, passive interface won't be the solution. Because it
>only disable the border router from updating the routing information
>through that certain interface. And I don't see how filter list works.
>Because if we filter the route being advertise to other rip routers, the
>route redistributes from ospf will also be filtered. Right?
> Correct me if I am wrong and sorry for the influent English. That's
>something I need to work on after this test. :-)
>
>Frank
>
>
>
>Internet
>dennis.d.adekola@britishairways.com@groupstudy.com - 11/18/2002 07:35 PM
>
>
>Please respond to dennis.d.adekola@britishairways.com
>
>Sent by: nobody@groupstudy.com
>
>To: Frank Yu
>
>cc: ccielab
>
>
>Subject: Re: is this possible?
>
>
>Frank,
>
>You can make you of passive interfaces
>That is, place a passive interface on the interface/s you don't want RIP
to
>shout out from
>You can also do the same for OSPF
>
>Hope this helps
>
>
>Dennis
>
>
>
>
>frank.yu@japan.bnpparibas.com@groupstudy.com on 18/11/2002 08:35:04
>
>Please respond to frank.yu@japan.bnpparibas.com
>
>Sent by: nobody@groupstudy.com
>
>
>To: ccielab
>cc:
>bcc:
>Subject: is this possible?
>
>
>Group,
>
> If a router running both rip and ospf, all the ip addresses on the
>router are class B with /24 subnetmask.
> When I enable rip on the router, I have to enable the whole classB
>network, in this case the ip addresses configured in ospf domain also
>belong and advertise through rip now.
> My question is, how could I prevent the ip address in ospf domain being
>advertised through rip directly, so the routers in rip domain only learn
>these route by the redistribution of ospf.
> Thanks in advance.
>
>Frank
>
>
>
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-- Le Dinh An Network Consultant Cell: 84 913 100 478This message and any attachments (the "message") is intended solely for the addressees and is confidential. If you receive this message in error, please delete it and immediately notify the sender. Any use not in accord with its purpose, any dissemination or disclosure, either whole or partial, is prohibited except formal approval. The internet can not guarantee the integrity of this message. BNP PARIBAS (and its subsidiaries) shall (will) not therefore be liable for the message if modified.
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Ce message et toutes les pieces jointes (ci-apres le "message") sont etablis a l'intention exclusive de ses destinataires et sont confidentiels. Si vous recevez ce message par erreur, merci de le detruire et d'en avertir immediatement l'expediteur. Toute utilisation de ce message non conforme a sa destination, toute diffusion ou toute publication, totale ou partielle, est interdite, sauf autorisation expresse. L'internet ne permettant pas d'assurer l'integrite de ce message, BNP PARIBAS (et ses filiales) decline(nt) toute responsabilite au titre de ce message, dans l'hypothese ou il aurait ete modifie.
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