3com 5500-ei pwr Reference Guide

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1-4 
Table 1-2 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. 
Join 
This lower threshold is greater 
than or equal to twice the 
timeout time of the Hold timer. 
You can change the threshold 
by changing the timeout time of 
the Hold timer. 
This upper threshold is less 
than one-half of the timeout 
time of the Leave timer. You 
can change the threshold by 
changing the timeout time of 
the Leave timer. 
Leave 
This lower threshold is greater 
than twice the timeout time of 
the Join timer. You can change 
the threshold by changing the 
timeout time of the Join timer. 
This upper threshold is less 
than the timeout time of the 
LeaveAll timer. You can 
change the threshold by 
changing the timeout time of 
the LeaveAll timer. 
LeaveAll 
This lower threshold is greater 
than the timeout time of the 
Leave timer. You can change 
threshold by changing the 
timeout time of the Leave timer.
32,765 centiseconds 
 
 
In networking, the following GARP timer settings are recommended: 
GARP hold timer: 100 centiseconds (1 second) 
GARP Join timer: 600 centiseconds (6 seconds) 
GARP Leave timer: 3000 centiseconds (30 seconds) 
 
Related commands: display garp timer
Examples 
# Set the GARP Join timer to 30 centiseconds for Ethernet1/0/1. 
<Sysname> system-view 
System View: return to User View with Ctrl+Z. 
[Sysname] interface Ethernet 1/0/1  
[Sysname-Ethernet1/0/1] garp timer join 30 
garp timer leaveall 
Syntax 
garp timer leaveall timer-value 
undo garp timer leaveall