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Usage guidelines
L2TP uses AVPs to transmit tunnel negotiation parameters, session negotiation parameters, and
user authentication information. This feature can hide sensitive AVP data, such as user passwords.
This feature encrypts AVP data with the key configured by using the
tunnel password
command
before transmission.
The
tunnel avp-hidden
command can be configured for L2TP groups in both LAC and LNS modes.
However, it does not take effect on L2TP groups in LNS mode.
For this command to take effect, you must enable tunnel authentication by using the
tunnel
authentication
command.
Examples
# Enable transferring AVP data in hidden mode.
<Sysname> system-view
[Sysname] l2tp-group 1 mode lac
[Sysname-l2tp1] tunnel avp-hidden
Related commands
tunnel authentication
tunnel password
tunnel flow-control
Use
tunnel flow-control
to enable L2TP session flow control.
Use
undo tunnel flow-control
to disable L2TP session flow control.
Syntax
tunnel flow-control
undo tunnel flow-control
Default
L2TP session flow control is disabled.
Views
L2TP group view
Predefined user roles
network-admin
Usage guidelines
This feature adds sequence numbers to transmitted packets and uses them to reorder packets
arriving out of order and to detect lost packets.
This feature takes effect on both sent and r eceived L2TP data messages. The L2TP sessions
support this feature if either the LAC or LNS is enabled with this feature.
When the device acts as an LAC, a change in the flow control status on the LNS causes the same
change in the flow control status of L2TP sessions. When the device acts as an LNS, a change in the
flow control status on the LAC does not affect the flow control status of L2TP sessions.
Examples
# Enable L2TP session flow control.
<Sysname> system-view
[Sysname] l2tp-group 1 mode lac
[Sysname-l2tp1] tunnel flow-control
Summary of Contents for MSR810
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