You need also to remember that in many cases the DSL link is not provided by the actual ISP. In many cases this is a wholesale scenario which uses L2TP to forward the PPP session from the telco/DSL provider to the ISP. In many cases there would also be another L2TP hop to another sub-ISP/customer.
Arie On Wed, Apr 22, 2009 at 7:01 PM, Curtis Maurand <cmaur...@xyonet.com> wrote: > > I don't understand why DSL providers don't just administratively down the > port the customer is hooked to rather than using PPPoE which costs bandwidth > and has huge management overhead when you have to disconnect a customer. I > made the same recommendation to the St. Maarten (Dutch) phone company > several years ago. They weren't listening either. That way you can rate > limit via ATM or by throttling the port administratively. > > Just a suggestion > > > Sherwin Ang wrote: > >> Hello Nanog! >> >> i just would like to see how other operators are handling >> broadband/DSL subscribers in their BRAS. Currently, we are >> implementing PPPoE with AAA on our Redback SE's and Cisco boxes. As >> our subscriber base grows and grows, management of user logins, >> passwords, password resets, password changes are getting really huge. >> Some customers also complains about the method of logging in, asking >> for an easier way to do it or dump logins altogether. We're looking >> at DHCP/CLIPS for Redback but haven't really tested it since it >> requires a new license for it. For Cisco, we've been empty so far in >> looking for a solution wherein we still have accounting and >> rate-limiting on subscriber vc's. >> >> how are network operators in your areas do it? DHCP? if i do DHCP, >> will i still have the flexibility of sending a radius reply attribute >> so i could rate-limit the subscribers speed? or still offer speed on >> demand via radius/time-based upgrade of their rate-limits during >> off-peak hours? >> >> thank you for any insights that you may share. >> >> >> -Sherwin >> >> >> > > >
