On Fri, 10 Oct 2003, Alex Satrapa wrote: > 4) Make it work reliably (24x365)
I believe you'd be better off starting with rp-l2tp and hacking that. In my experience (I'm the author of rp-l2tp, of course! :-)) it's more reliable than l2tpd. > 5) Make it work large-scale (2000 PPP connections on one server) You will not easily achieve that with the current Linux PPP implementation. On our tests on a real-world machine running rp-l2tp, each PPP connection took approximately 1MB (!), so you'd need a lot of RAM to accomodate 2000 of them. Also, as you mentioned, the context-switching of 2000 userspace processes will be hard on the CPU. Simply put, the Linux PPP implementation was never designed to support more than a few simultaneous connections. Reworking it to do so will be a lot of work. Regards, David.
