AT-9000 Switch Command Line User’s Guide
Section VII: Virtual LANs 601
Guidelines
Here are the guidelines to GVRP:
GVRP is supported with STP or RSTP or without spanning tree.
Both ports the constitute a network link between the switch and the
other device must be running GVRP.
You cannot modify or delete dynamic GVRP VLANs.
You cannot remove dynamic GVRP ports from static or dynamic
VLANs.
To be detected by GVRP, a VLAN must have at least one active node
or have at least one port with a valid link to an end node. GVRP cannot
detect a VLAN that does not have any active nodes or valid port links.
Resetting the switch erases all dynamic GVRP VLANs and dynamic
GVRP port assignments. The dynamic assignments are relearned by
the switch as PDUs arrive on the ports from other switches.
GVRP has three timers: join timer, leave timer, and leave all timer. The
values for these timers must be set the same on all switches running
GVRP. Timers with different values on different switches can result in
GVRP compatibility problems.
You can convert dynamic GVRP VLANs and dynamic GVRP port
assignments to static VLANs and static port assignments.
The default port settings on the switch for GVRP is active, meaning
that the ports participate in GVRP. Allied Telesis recommends
disabling GVRP on those ports that are connected to GVRP-inactive
devices, meaning devices that do not feature GVRP.
PDUs are transmitted from only those switch ports where GVRP is
enabled.
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