[c-nsp] PPPoE Cisco Broadband Network Management

[Mark Tinka]

Hello all.

I'm contemplating the design of a scalable Cisco-based broadband 
service that will offer users package-based solutions in the form 
of 256Kbps, 512Kbps, 1Mbps, e.t.c., for different contention ratios 
(home or business).

Some deployments I have witnessed are using IP addresses as the 
basis of managing bandwidth for a specific package per specific 
contention group. While this is easy and works well, it might mean 
additional administrative and technical management of IP addresses 
per package per contention group, which I wouldn't imagine would be 
scalable in the long run as human intervention would be 
consistently required to ensure packages are "well-fed" in terms of 
IP address space, especially considering some packages will be more 
popular than others.

I'm imagining a situation where different users, regardless of 
package, can utilize any random IP address that's available on the 
router pool and yet maintain their package properties (bandwidth 
and contention group), in a very scalable fashion. This way, I 
don't have to worry about which IP addresses are being used by 
which package at what rate.

Service would be PPPoE dial-up with RADIUS authentication 
terminating on a Cisco router. The last mile network would be 
wireless-based.

Are there features I can exploit within IOS and RADIUS that would 
allow me to accomplish this without significantly reducing the 
router's session handling capacity (7206-VXR/NPE-G1)?

Cheers,

Mark.
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