Not sure what you are asking exactly, but in general VPDN looks like this:
There are essentially (with the exception of performance due to number of connections) no restrictions on the LAC or LNS regarding the number of tunnels, the number of sessions, the number of sessions per tunnel, or the number of clients. Again there are max limits per platform based mostly on performance, but they certainly are high enough not to matter right now.
It must be the question on how Cisco IOS handles L2TP and port numbers. So we're talking about NAT.
the RFC states that L2TP (where a client running an L2TP client is always acting as the LAC ... so nothing weird about that). Usually starts a session on udp port 1701 to 1701. Source port can be changed though.
The receiving L2TP peer (the LNS) then responds to the sender normally from 1701 to the senders port. But the problem is that it does not have to be sent from 1701. If that is the case then L2TP and NAT will not work.
If the LNS does not change the source port (away from 1701) then it will work across NAT'ed environments and fortunately most vendors do this. But what do cisco IOS do ??
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.