Another example of where you would need IP's assigned from radius instead of
a NAS is in the case of VPOP's / Virtual ISP's


For example we are in the process of putting in 4 Nortel CVX 1800's with
1288 lines each all in one large roll over (5152 lines) in the GTA (Greater
Toronto Area)

>From those 4 CVX's we are going to provide wholesale dialup port for 4 - 10
different ISP's  Each ISP wants their customers to receive an address form
their IP block so it resolves back to their company.  This is done for
several reasons controlling access to SMTP servers and other resources as
well as just for appearance so that their customers can't see that we use
the same dial-up ports.

Anyway we wouldn't want each ISP to have to assign 1288 IP's to each NAS as
this would be a large waste of IP addresses.  If we can have radius assign
IP's then this greatly reduces the number of IP's allocated.  Again for
redundancy and performance we will likely have 2-4 radius servers per
company depending on the redundancy level they require. The sharing of IP's
between radius server IPpools is a great asset.

Kelvin Hockin
Echo OnLine Internet Inc.
http://www.eol.ca

----- Original Message -----
From: "Simon Allard" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, May 16, 2002 5:36 PM
Subject: RE: Using ippool with two radius servers?


> > > > Ah, you only have one terminal server with 30.000 ports on it?
> > > > In that case, route the /17 to that NAS and be done with it.
> > > > But you likely have tens or hundreds of NASes.
> > > >
> > > > Either you're way ahead of me, or you really need to think this
over.
> > >
> > >         I think I'm ahead of you :-) Believe me, routing is not an
issue
> > > here, I do have a /17 block with summarized pools in a way that I only
> > > need one static route per NAS (there are 20 of them). No need to use
> > > dinamic routing.
> >
> > Okay, you have a fixed pool assigned to each NAS.  I still fail to see
> > why you don't want the NAS to each handle the assignment of their own
> > pools?  But then what the heck do I know about building a big network...
>
>
> I have the same requirment (ippool over multiple radius servers).
> SOmetimes allocating IPs from the NAS will just not work.
>
> For example say we have 4000 dialin ports. We allocate the IPs from the
> NAS for those users. All good.
>
> But we have a different bunch of users. Eg Sat routed users. They need a
> different IP Pool. There are not enough customers to warrent putting
> another pool on each NAS box. This is where IPpool works nicley.
>
> Most bighish ISP's need more than 1 radius server. We have 6 load
> balanced behind a layer 4 switch.
>
>
>
> Simon Allard (Senior Tool Monkey)
> IHUG
> Ph (09) 358-5067   Email: [EMAIL PROTECTED]
>
> I'm out of my mind right now, but feel free to leave a message.....
>
>
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