1765
undo tunnel authentication
View L2TP group view
Parameter None
Description Use the
tunnel authentication command to enable the L2TP tunnel
authentication function.
Use the
undo tunnel authentication command to disable the L2TP tunnel
authentication function.
By default, L2TP tunnel authentication function is enabled.
Generally, authentication is required at both ends of a tunnel for the sake of
security. However, you can disable the authentication when you check network
connectivity or it is required to receive tunneling requests from unknown tunnel
peers.
Example # Disable L2TP tunnel authentication.
<Sysname> system-view
[Sysname] l2tp-group 1
[Sysname-l2tp1] undo tunnel authentication
tunnel avp-hidden
Syntax tunnel avp-hidden
undo tunnel avp-hidden
View L2TP group view
Parameter None
Description Use the
tunnel avp-hidden command to specify to transfer attribute value pair
(AVP) data in hidden mode.
Use the
undo tunnel avp-hidden command to restore the default.
By default, AVP data is transferred over a tunnel in plain text mode.
Note that:
■ Some parameters of L2TP are transferred in AVP data. You can use the tunnel
avp-hidden command to transfer AVP data in hidden mode for higher
security.
■ The tunnel avp-hidden command is available for only LACs.
Example # Transfer AVP data in hidden mode.
