[c-nsp] AS5300 + RADIUS - IP Address Assignment

[Crooks, Samuel]

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Message: 1
Date: Wed, 11 Aug 2004 11:42:39 +0200
From: Mark Tinka <mtinka at africaonline.co.sz>
Subject: [c-nsp] AS5300 + RADIUS - IP Address Assignment
To: cisco-nsp at puck.nether.net
Message-ID: <200408111142.39660.mtinka at africaonline.co.sz>
Content-Type: text/plain;  charset="us-ascii"

Hello all.

I have a situation where 2 providers, ISP A and ISP B are sharing a
single 
AS5300.

Both ISP's have their own circuits to their upstreams, and even though
both 
their customers would be dialing the same NAS, they don't want one ISP
to 
provide the Internet connectivity for both sets of customers.

ISP A would like to have its customers use its Internet connectivity,
and ISP 
B would like its own customers to use its own connectivity as well.

The easiest way to do this would be to assign a static IP address in the

RADIUS attributes of ISP B's customers, so that when they dial they get
ISP 
B's IP's, while ISP A's customers take the default IP pool from the NAS.

However, the problem with this scenario is management and scalability,
and 
the fact that ISP B wouldn't really like to provide static IP's for a
dial-up 
service.

My question, then, is, would it be possible for RADIUS, in some way, to
be 
told that for ISP B's customers, it take an IP assigned from 'def' pool
on 
the NAS so ISP B's customers can use ISP B's Internet connectivity,
while ISP 
A takes the default 'abc' pool from the NAS?

All help appreciated?

Mark.



Sounds like you need to use a discriminator to specify which pool to
assign from, on the RADIUS server.  I would do it all on the RADIUS
server, since you have a per-user config going already.. keep it all
there.  I would either discriminate based on the DNIS (if they dial
different numbers) or the RADIUS realm to do it by the username.