Optional) Setting The Garp Timers - Huawei AR530 series Configuration Manual

Huawei AR530&AR550 Series Industrial Switch Routers
Configuration Guide - Ethernet Switching
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5.5.3 (Optional) Setting the GARP Timers

Context
When a GARP participant is enabled, the LeaveAll timer is started. When the LeaveAll timer
expires, the GARP participant sends LeaveAll messages to request other GARP participants to
re-register all its attributes. Then the LeaveAll timer restarts.
Devices on a network may have different settings for the LeaveAll timer. In this case, all the
devices use the smallest LeaveAll timer value on the network. When the LeaveAll timer of a
device expires, the device sends LeaveAll messages to other devices. After other devices receive
the LeaveAll messages, they reset their LeaveAll timers. Therefore, only the LeaveAll timer
with the smallest value takes effect even if devices have different settings for the LeaveAll timer.
When using the garp timer command to set the GARP timers, pay attention to the following
points:
l
l
l
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
garp timer leaveall timer-value
Issue 01 (2014-11-30)
NOTE
Before setting the registration mode for an interface, enable GVRP on the interface.
The undo garp timer command restores the default values of GARP timers. If the default
value of a timer is out of the valid range, the undo garp timer command does not take
effect.
The value range of each timer changes with the values of the other timers. If a value you
set for a timer is not in the allowed range, you can change the value of the timer that
determines the value range of this timer.
To restore the default values of all the GARP timers, restore the Hold timer to the default
value, and then sequentially restore the Join timer, Leave timer, and LeaveAll timer to the
default values.
NOTE
It is recommended that you use the following values for the GVRP timers:
l GARP Hold timer: 100 centiseconds (1 second)
l GARP Join timer: 600 centiseconds (6 seconds)
l GARP Leave timer: 3000 centiseconds (30 seconds)
l GARP LeaveAll timer: 12000 centiseconds (2 minutes)
When more than 80 dynamic VLANs are created or more than three devices are running GVRP on the
network, set the GVRP timer to be larger than or equal to the reconmmended value. Otherwise, the device
CPU is affected. When the number of dynamic VLANs or GVRP devices increases, increase lengths of
the GARP timers. Otherwise, traffic may fail to be forwarded.
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