At 05:33 PM 5/6/2002 -0300, Gelson Dias Santos wrote:
> >> we have tried various things but cannot get it to give addresses based on
> >> the nas identifier. what are we doing wrong?
> >
> >That's not the idea behind the ip_pool module. The idea is to assign
> ip's from
> >the same pool to all the access servers and not maintain separate pools
> for each
> >nas. In any case if you want to assign different addresses to each nas
> you can
>
> Hummm... how do I route ip packets to users on different nas
> servers if they are on the same pool, hence on the same subnet? I mean,
> if user 1 connects on nas 1 and gets ip 192.168.1.1, then users 2
> connects on nas 2 and gets the next ip, 192.168.1.2, how will my routers,
> servers etc know where to send their reply packets?
Generally handled by a dynamic routing protocol between your NAS and/or
a common router. Dynamic routing protocols include OSPF, RIPv1, RIPv2,
IS-IS, ...
The exact choice is up to you ( as is the NAS configuration ).
The main concept to remember is that each of your users is *NOT* on the
same subnet, though their IP's may come from a sequential block of addresses.
Each user is on their own /32 ( 255.255.255.255 ) "subnet".
> Wen we have two different pools it's easy, just set a static route
> pointing the whole pool to the right server. With one big pool, how do I
> do it? I don't want to use RIP or anything like that to propagate
> tousands of host routes.
Then let your NAS assign the addresses. You can run NAS assigned dynamic
addresses with a dynamic protocol just fine.
If you don't want to announce ( and withdraw ) thousands of host routes
into your IGP, then don't user server assigned addresses, let the NAS
handle it.
-Chris
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