3Com Switch 8800 Configuration Guide Chapter 9 GARP/GVRP Configuration
9-3
Note that, the value of Join timer should be no less than the doubled value of Hold timer,
and the value of Leave timer should be greater than the doubled value of Join timer and
smaller than the Leaveall timer value. Besides, you must set the value of the Join timer
in terms of 5 centiseconds. Otherwise, the system will prompt message of error.
The value range of a timer varies with the values of other timers. So if the value of a
timer you want to set is not within the available value range, you can change the value
range by changing the values of other related timers.
z The lower limit of Hold timer is 10 centiseconds. You can change its upper limit by
changing the value of Join timer.
z You can change the lower limit and upper limit of Join timer by changing the value
of Hold timer and Leave timer respectively.
z You can change the lower limit and upper limit of Leave timer by changing the
value of Join timer and LeaveAll timer respectively.
z The upper limit of LeaveAll timer is 32765 centiseconds. You can change its lower
limit by changing the value of Leave timer.
9.1.3 Displaying and Debugging GARP
After the above configuration, execute the display command in any view to display the
running of GARP configuration, and to verify the configuration.
Execute the reset command in user view to reset the configuration of GARP. Execute
the debugging command in user view to debug the configuration of GARP.
Table 9-2 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 ]
Clear GARP statistics information reset garp statistics [ interface
interface-list ]
Enable GARP event debugging debugging garp event
Disable GARP event debugging undo debugging garp event
9.2.1 GVRP Overview
GARP VLAN Registration Protocol (GVRP) is a GARP application. Based on GARP
operating mechanism, GVRP provides maintenance of the dynamic VLAN registration
information in the switch and propagates the information to other switches. All the