3Com Switch 8800 Family IPsec Module Configuration and Command reference Guide

340 CHAPTER 20: L2TP CONFIGURATION COMMANDS
If a peer end name is specified in L2TP group 1 configuration, L2TP group 1 will
not serve as the default L2TP group. For example, given the environment of
Windows 2000 beta 2, the local name of VPN connection is NONE, so the peer
end name that the security gateway receives is NONE. In order to allow the
security gateway to receive tunnel connection requests sent by this kind of
unknown peer ends, or for the test purpose, a default L2TP group can be
configured.
The allow l2tp command is used on LNS side. If the peer end name of the tunnel
is configured, it must be the name of the local end configured on LAC side.
Related command: l2tp-group.
Example
# Receive L2TP tunnel connection requests sent by the peer end AS8010 (LAC
side), and creates a virtual-access interface on virtual-template 1.
[SecBlade_VPN-l2tp2] allow l2tp virtual-template 1 remote AS8010
# Use L2TP group 1 as the default L2TP group, receiving L2TP tunnel connection
requests sent by any peer end, and creates a virtual-access interface according to
virtual-template 1.
[SecBlade_VPN] l2tp-group 1
[SecBlade_VPN-l2tp1] allow l2tp virtual-template 1
debugging l2tp Syntax
debugging l2tp { all | control | dump | error | event | hidden | payload |
time-stamp }
undo debugging l2tp { all | control | dump | error | event | hidden | payload |
time-stamp }
View
System view
Parameter
all: Enables all L2TP debugging.
control: Enables control packet debugging.
dump: Enables PPP packet debugging.
error: Enables error debugging.
event: Enables event debugging.
hidden: Enables hidden AVP debugging.
payload: Enables L2TP payload debugging.
time-stamp: Enables time-stamp debugging.