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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-hiddencommand to specify to transfer attribute value pair (AVP) data in hidden mode.

Use the undo tunnel avp-hiddencommand 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-hiddencommand to transfer AVP data in hidden mode for higher security.

The tunnel avp-hiddencommand is available for only LACs.

Example # Transfer AVP data in hidden mode.

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3Com MSR 50, MSR 30 Tunnel avp-hidden, Undo tunnel authentication, Syntax tunnel avp-hidden Undo tunnel avp-hidden, 1765