From: kym blair (kymblair@hotmail.com)
Date: Sun Jan 05 2003 - 03:27:12 GMT-3
Shadi,
You are not clear on what you are trying to achieve. Multipoint atm
subinterfaces are generally used; you can put the hub and many spoke routers
in the same subnet (or just one spoke if you prefer). Of course, you can
have multiple multipoint subinterfaces if you don't want all your spokes in
the same network.
You don't have to put all the subnets in area 0, and in fact shouldn't if
you have a large number of spoke routers. If your spoke routers don't need
to receive the entire routing table, but just a default route, then maybe
you want to put them in stub or totally stub areas.
I get the impression you are talking about a production network; if you
don't have a good atm lab to mock this up, you can get similar results
playing with ospf over frame relay.
HTH, Kym
>From: Shadi <ccie@investorsgrp.com>
>Reply-To: Shadi <ccie@investorsgrp.com>
>To: ccielab@groupstudy.com
>Subject: ATM Hub and Spoke and OSPF
>Date: Sun, 05 Jan 2003 09:48:13 +0400
>
>Guys,
>
>
>I have a hub and spoke ATM network, the hub has STM-1 ATM link, and the
>spokes are having E3 ATM links.
>
>I would like to have OSPF over this network but here am stuck in two
>scenarios:
>
>Scenario 1: Design the whole WAN Hub and spoke network without making
>subinterfaces on the STM-1 hub interface, but that means I will make the
>whole WAN network as one network. and I will make the whole WAN network as
>OSPF area 0.
>
>Scenario 2: Design the whole WAN Hub and Spoke Network with subinterfaces
>on
>the STM-1 hub interfaces, but that means I will split the WAN network into
>smaller networks /252. And If I am going to implement OSPF, I will have
>multiple area 0 on different WAN networks.
>
>
>So what do you recommend Guys? Which scenario is better from your experince
>point of view?
>
>Shadi
>.
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