L2Tp Configuration Example; Nas-Initialized Vpn - 3Com 3C13636 Configuration Manual

3Com Router 3000 Ethernet Family
Configuration Guide
Enable PPP packet content debugging
Disable PPP packet content debugging
Enable L2TP error debugging
Disable L2TP error debugging
Enable L2TP event debugging
Disable L2TP event debugging
Enable hidden AVP debugging
Disable hidden AVP debugging
Enable L2TP payload debugging
Disable L2TP payload debugging
Enable L2TP time stamp debugging
Disable L2TP time stamp debugging

2.5 L2TP Configuration Example

Both NAS and user end can initiate L2TP calls. They are illustrated separately as
follows.

2.5.1 NAS-Initialized VPN

I. Network requirements
A VPN user can access the network of its company's headquarters by taking the
following procedure:
User dials up to access the network.
NAS performs authentication on this user, and then originates a tunnel setup
request to LNS if it is a VPN user.
After establishing the tunnel with LNS, NAS sends packets to LNS, providing the
negotiated information between NAS and VPN users.
LNS decides whether to accept the connection according to the pre-negotiated
information.
User communicates with the company headquarters by using the tunnel between
NAS and LNS.
Operation
3Com Corporation
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Chapter 2 Configuration of L2TP
Command
debugging l2tp dump
undo debugging l2tp dump
debugging l2tp error
undo debugging l2tp error
debugging l2tp event
undo debugging l2tp event
debugging l2tp hidden
undo debugging l2tp hidden
debugging l2tp payload
undo debugging l2tp payload
debugging l2tp time-stamp
undo debugging l2tp time-stamp