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3Com Switch 7750 Series
Command Reference Guide — GVRP Commands Chapter 1
GVRP Configuration Commands
1-3
View
Ethernet port view
Parameter
hold: Sets the GARP Hold timer. When a GARP entity receives a piece of registration
information, it does not send out a Join message immediately. Instead, to save the
bandwidth resources, it starts the Hold timer, puts all registration information it receives
before the timer times out into one Join message and sends out the message after the
timer times out.
join: Sets the GARP Join timer. To transmit the Join messages reliably to other entities,
a GARP entity sends each Join message two times. The Join timer is used to define the
interval between the two sending operations of each Join message.
leave: Sets the GARP Leave timer. When a GARP entity expects to deregister a piece
of attribute information, it sends out a Leave message. Any GARP entity receiving this
message starts its Leave timer, and deregisters the attribute information if it does not
receives a Join message again before the timer times out.
timer-value: Timeout time (in centiseconds) of the GARP timer (Hold, Join or Leave) to
be set. This argument needs to be a multiple of 5. By default, it is 10, 20, and 60 for
Hold, Join and Leave timers respectively.
Description
Use the garp timer command to set a GARP timer (that is, the Hold timer, the Join timer,
or the Leaver timer) for an Ethernet port.
Use the undo garp timer command to restore the default setting of a GARP timer.
The timeout ranges of the timers vary depending on the timeout values you set for other
timers. If you want to set the timeout time of a timer to a value out of the current range,
you can set the timeout time of the associated timer to another value to change the
timeout range of this timer.
The following table describes the relations between the timers:
Table 1-1 Relations between the timers
Timer Lower threshold Upper threshold
Hold 10 centiseconds
This upper threshold is less than or
equal to one-half of the timeout time
of the Join timer. You can change the
threshold by changing the timeout
time of the Join timer.