User guide

E
XTREME
W
ARE
S
OFTWARE
U
SER
G
UIDE
6-19
G
ENERIC
VLAN R
EGISTRATION
P
ROTOCOL
VLANs that are automatically created using GVRP are given names in the format
gvrp vlan xxxx
where xxxx is the VLANid (in decimal) that is discovered by GVRP. These VLANs are
not permanently stored in nonvolatile storage, and you cannot add or remove ports
from these VLANs.
GVRP assumes that the VLANs for which it carries information operate using VLAN
tags, unless explicitly configured otherwise. Typically, you must configure any untagged
VLANs on the switches at the edges of the network, and the GVRP protocol is used
across the core of the network to automatically configure other switches using tagged
VLANs.
You cannot assign an IP address to a VLAN learned by way of GVRP.
GVRP
AND
S
PANNING
T
REE
D
OMAINS
Because GVRP-learned VLANs are dynamic, all VLANs created by GVRP use the
system defaults and become members of the default Spanning Tree Domain (STPD), s0.
Because two STPDs cannot exist on the same physical port, if two GVRP clients attempt
to join two different VLANs that belong to two different STPDs, the second client is
refused. You should configure all potential GVRP VLANs to be members of the same
STPD. This configuration is done automatically, if you have not configured additional
STPDs.
GVRP C
OMMANDS
Tab le 6-2 describes GVRP commands.