3Com 7700 Configuration Manual page 50

42 C 3: VLAN C
HAPTER ONFIGURATION
Setting the GARP Timer
GARP timers include the hold, join, leave, and leaveall timers.
The GARP participant sends join message regularly when join timer times out so
that other GARP participants can register its attribute values.
When the GARP participant wants to remove some attribute values, it sends a
leave message outward. The GARP participant receiving the information starts the
leave timer. If a join message is not received again before the leave timer expires,
the GARP attribute values are removed
The leaveall timer is started as soon as the GARP participant is enabled. A leaveall
message is sent at timeout so that other GARP participants remove all the
attribute values of this participant. Then, the leaveall timer is restarted and a new
cycle begins.
When the switch receives GARP registration information, it does not send a join
Message immediately. Instead, it will enable a hold timer and send the Join
message outward at timeout of the hold timer. In this way, all the VLAN
registration information received within the time specified by the hold timer can
be sent in one frame to save bandwidth.
Configure the hold, join, and leave timers in Ethernet port view.
Table 9 Set the GARP Timer
Operation
Set GARP hold, join, and leave
timers
Set GARP leaveall timer
Restore the default GARP hold,
join, and leave timer settings
Restore the default GARP leaveall
timer settings.
Configure the leaveall timer in system view.
Note that the value of the join timer should be no less than the doubled value of
the hold timer, and the value of the leave timer should be greater than the
doubled value of the join timer and smaller than the leaveall timer value.
Otherwise, the system displays an error message.
By default, the hold timer is 10 centiseconds, the join timer is 20 centiseconds, the
leave timer is 60 centiseconds, and the leaveall timer is 1000 centiseconds.
Display and Debug GARP
After you configure the GARP timer, execute the display command in all views to
display the GARP configuration, and to verify the effect of the configuration.
Execute the reset command in the user view to reset the GARP configuration.
Execute the debugging command in user view to debug the GARP configuration.
Table 10 Display and Debug GARP
Operation
Display GARP statistics information display garp statistics [ interface interface-list ]
Command
garp timer { hold | join | leave } timer_value
garp timer leaveall timer_value
undo garp timer { hold | join | leave }
undo garp timer leaveall
Command