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string: Specifies the password. Its plaintext form is a case-sensitive string of 1 to 16 characters. Its
encrypted form is a case-sensitive string of 1 to 53 characters.
Usage guidelines
For this command to take effect, you must enable tunnel authentication by using the tunnel
authentication command.
For the tunnel authentication key change to take effect, change the tunnel authentication key before
tunnel negotiation is performed.
Examples
# Configure the key for tunnel authentication to a plaintext key yougotit.
<Sysname> system-view
[Sysname] l2tp-group 1 mode lac
[Sysname-l2tp1] tunnel password simple yougotit
Related commands
tunnel authentication
tunnel timer hello
Use tunnel timer hello to set the Hello interval.
Use undo tunnel timer hello to restore the default.
Syntax
tunnel timer hello hello-interval
undo tunnel timer hello
Default
The Hello interval is 60 seconds.
Views
L2TP group view
Predefined user roles
network-admin
Parameters
hello-interval: Specifies the interval at which the LAC or the LNS sends Hello packets, in the range of
60 to 1000 seconds.
Usage guidelines
When no packet is transmitted between the LAC and LNS, Hello packets are sent at the set interval.
This prevents the L2TP tunnels and sessions from being removed due to timeouts.
You can set different Hello intervals for the LNS and LAC.
Examples
# Set the Hello interval to 90 seconds.
<Sysname> system-view
[Sysname] l2tp-group 1 mode lac
[Sysname-l2tp1] tunnel timer hello 90
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