Allied Telesis AT-S62 - Manual (Page 284)

Chapter 22: GARP VLAN Registration Protocol
Section V: Virtual LANs 284
Join Time
Sets the duration of the Join Period timer. The range is from 10 to
60 centiseconds and the default is 20.
If you change this timer, it must in relation to the GVRP Leave
Timer according to the following equation:
Join Timer <= 2 x (GVRP Leave Timer)
Enable GIP
Enables the operation of GIP. If enabled, attribute registrations
and de-registrations processed on a port are propagated to other
ports in the GIP-connected ring. GIP must be enabled in order to
use GVRP.
Note
Do not disable GIP if you intend to use GVRP. GIP is required to
propagate VLAN information among the ports of the switch.
Leave All Time
Sets the duration of the LeaveAll Period timer. The range is from
500 to 3000 centiseconds and the default is 1000.
Caution
The settings for the three GVRP timers must be the same on all
GVRP-active devices in your network.
5. Click Apply.
The new GVRP settings are activated on the switch.
6. To permanently save the changes, select the Save Config menu
selection.