[c-nsp] Dynamic qos or bandwidth profiles?

[Mike]

Hi,

	I am a service provider and have customers largely terminated via PPPoE 
on a 7201. I typically enforce maximum upstream and downstream rates at 
the customer's CPE and charge for higher rates. This works reasonably 
well, if inflexible. I'd like to move to a more intelligent model which 
would allow me to implement some sort of dynamic QoS for my customers 
where I can demote users who are over their limit to a lower QoS tier 
and/or lower bandwidth profile.

	I have radius of course and already can insert various attributes to 
the customer and have some already setup with their own interface 
bandwidth limits and such. The problem is if I base my model on putting 
out radius attributes, I have to force the customer to disconnect and 
let PPPoE re-negotiate each time the customer is promoted or demoted. 
This seems unfairly disruptive to me.

	I would also like feedback / opinions on the scalability of 
implementing rate controls on the virtual-access interface for each 
customer. Is rate limiting really going to work per-session with 4000+ 
pppoe sessions on the same router?

Mike-