[c-nsp] pppoe with 7200

[Kristofer Sigurdsson]

> My recommendation is not to play games with the RADIUS server to keep
> track of your duplicate sessions, it will shoot you in the foot every
> time, especially on large installations.  The RADIUS protocol isn't
> always reliable enough to make sure you receive EVERY single start and
> stop record.  While a few RADIUS servers (like Radiator) allow you to
> double check the NAS box via SNMP to see if a user is still logged in,
> it doesn't scale well and adds a lot of unnecessary processing load on a
> RADIUS server.  (especially a RADIUS server like Radiator that is not
> multi threaded).

Agreed.  But it's the only way to accomplish the task; to limit the number
of simultanious logins from the same username.

> 
> That being said, you CAN limit the amount of PPPoE sessions coming from
> a single MAC address or a single PVC for that matter.

You're right, this is a better way and easily configured on the router.

However, the original poster specifially stated that this would not be enough
for him, he wanted to limit logins per username.

-- 
Kristófer Sigurðsson         | Tel: +354 525 4103 / MSN: ks at rhi.hi.is
Netsérfr./Network specialist | Reiknistofnun HÍ/University of Iceland