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142 C
HAPTER
7: B
RIDGE
P
ORT
P
ARAMETERS
Layer 2
Switching
Modules
✓
Multilayer
Switching
Modules
bridge port gvrpState Allows ports on Multilayer Switching Modules to send and receive GARP
VLAN Registration Protocol (GVRP) updates, which can help simplify the
management of IEEE 802.1Q VLAN configurations.
Valid Minimum Abbreviation
b po g
Important Considerations
■
You can use this command to configure the same setting on multiple
ports simultaneously. When you specify multiple port numbers, the
module prompts you to choose the setting and then applies it to all of
the ports.
■
To activate GVRP on your module ports, you must enable it for the
entire bridge (see “bridge gvrpState”in Chapter 6) as well as on
individual bridge ports (this command). If you enable GVRP on a port
but you have not enabled it for the bridge, GVRP does not function.
■
To maximize the effectiveness of GVRP, it should be enabled in as
many end stations and network devices as possible.
■
GVRP updates are not sent to any blocked Spanning Tree Protocol
(STP) ports. GVRP operates only on ports that are in the forwarding
state.
■
If GVRP is enabled on the bridge and on a given port which changes
to the STP forwarding state, the port automatically begins to
participate in GVRP.
■
VLANs that are created dynamically with GVRP exist only as long as a
GVRP-enabled device is sending updates — if the devices no longer
send updates, if GVRP is disabled, or if the module is rebooted, all
dynamic VLANs are removed, but the module leaves unchanged all
VLANs that were statically configured through a management
interface.
Options
Prompt Description Possible Values [Default]
Bridge ports Bridge ports for which you
wish to enable or disable the
GVRP state
■
enable
■
disable
disable