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44 CHAPTER 3: VLAN CONFIGURATION
information received within the time specified by the hold timer can be sent in one
frame to save bandwidth.
The value of the join timer should be no less than twice the value of the hold
timer, and the value of the leave timer should be greater than twice the value of
the join timer and smaller than the leaveall timer value. Otherwise, the system
displays an error message.
Join timer > 2 x hold timer > leave timer < leavall timer
GARP timers have the following default values:
■ Hold timer — 10 centiseconds
■ Join timer — 20 centiseconds,
■ Leave timer — 60 centiseconds
■ Leaveall timer — 1000 centiseconds.
Displaying and Debugging GARP
After you configure the GARP timer, use the display command in all views to
display the GARP configuration, and to verify the effect of the configuration.
Execute the reset command in user view to reset the GARP configuration.
Execute the debugging command in user view to debug the GARP configuration.
Configuring GVRP GARP VLAN Registration Protocol (GVRP) is a GARP application. GVRP is based on
the GARP, and maintains the dynamic VLAN registration information in the switch
and distributes the information to other switches. All the GVRP-supporting
switches can receive VLAN registration information from other switches and can
Table 7 Setting the GARP Timers
Operation Command
Configure the hold, join, and leave timers in Ethernet port view.
Set the GARP hold, join, and leave
timers
garp timer { hold | join | leave } timer_value
Restore the default GARP hold,
join, and leave timer settings
undo garp timer { hold | join | leave }
Configure the leaveall timer in system view.
Set GARP leaveall timer garp timer leaveall timer_value
Restore the default GARP leaveall
timer settings.
undo garp timer leaveall
Table 8 Display and Debug GARP
Operation Command
Display GARP statistics information display garp statistics [ interface interface-list ]
Display GARP timer display garp timer [ interface interface-list ]
Reset GARP statistics information reset garp statistics [ interface interface-list ]
Enable GARP event debugging debugging garp event
Disable GARP event debugging undo debugging garp event