Point To Point Tunneling - Alcatel Speed Touch Pro User Manual

7 PPP to PPTP Relaying for Microsoft Windows
7.10.1

Point to Point Tunneling

What is Tunneling
Tunneling applied to
the STPro
Result of PPTP
tunneling
Supported LAN
Protocols
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Tunneling is a that allows to transport certain protocols over a
network, which is not designed for that purpose
Example: IPX Packets can be wrapped in IP , ready to be routed
over an IP network.
At the destination, the IPX packets are decapsulated and made
available in their original format again.
Tunneling applied to the
Tunnels have a local scope.
"
Indeed, tunnels are established between two peers on the
local IP network: local PCs initiate tunnels, the
terminates these tunnels.
IP tunnels are established and released for the duration of a
"
session.
The protocol carried inside the tunnels is PPP . However,
"
various protocols can be carried inside the PPP frames.
The net result of PPTP tunneling is that PPP frames can cross
the local Ethernet segment between the
computer and vice versa.
This would otherwise not be possible as PPP is designed to run on
point to point connections, e.g. Dial Up connections, whereas
Ethernet is a shared medium.
Within PPP , all kinds of protocols can be transported.
The PPP/PPTP client, however, is the limiting factor. Some OSs only
allow specific protocols to be transported within PPP tunnels (e.g.
TCP/IP , IPX/SPX, or NETBEUI in case of Window 9x).
implies that:
and the client
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