H3C S5120-SI Series Command Reference Manual page 572

Default Level
2: System level
Parameters
interval: Interval (in seconds) at which the switch sends HABP request packets, in the range 5 to 600.
Description
Use the habp timer command to set the interval at which the switch sends HABP request packets.
Use the undo habp timer command to restore the default.
The default interval is 20 seconds.
This command is required only on the HABP server.
Examples
# Set the interval at which the switch sends HABP request packets to 50 seconds.
<Sysname> system-view
[Sysname] habp timer 50
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