IP Router Configuration 
Router Configuration Guide 151
hello-interval
Syntax hello-interval hello-interval
no hello-interval
Context config>router>l2tp>group
Description This command configures the time interval between two consecutive tunnel Hello messages. The Hello 
message is an L2TP control message sent by either peer of a LAC-LNS control connection. This 
control message is used as a keepalive for the tunnel. 
The no form of the command removes the interval from the configuration.
Default 60
Parameters hello-interval — Specifies the time interval, in seconds, between two consecutive tunnel Hello 
messages.
Default no hello-interval
Values 60 to 3600
idle-timeout
Syntax idle-timeout idle-timeout
no idle-timeout
Context config>router>l2tp>group
Description This command configures the period of time that an established tunnel with no active sessions will 
persist before being disconnected. 
Enter the no form of the command to maintain a persistent tunnel.
The no form of the command removes the idle timeout from the configuration.
Default no idle-timeout
Parameters idle-timeout — Specifies the idle timeout value, in seconds until the group is removed. 
Default no idle-timeout
Values 0 to 3600
lns-group
Syntax lns-group lns-group-id
no lns-group
Context config>router>l2tp>group