information to register VLAN members on ports across the network. You can use GVRP to set up VLANs in the network without having to manually configure

the VLANs on each switch. GVRP can reduce the possibility of errors and ensure consistency in VLAN configuration throughout the network.

If you enable GVRP on a port with a tagged or untagged static VLAN, GVRP sends advertisements (GVRP Bridge Protocol Data Units [BPDUs]) containing the

VLAN's ID. Any connected GVRP-aware port receiving the advertisements can dynamically join the advertised VLAN. All GVRP dynamically-learned VLANs

operate as tagged VLANs. A GVRP-enabled port only joins a VLAN when an advertisement for that VLAN is received on that specific port. A GVRP-enabled port

forwards advertisements from other ports on the switch but does not join the advertised VLAN.

To implement GVRP in a network, you must first configure the static VLANs required on switches that are connected to computers, servers, and other devices,

so that these VLANs can be propagated across the network. For other core switches in the network, enable GVRP on the links between these devices. You

should also determine security boundaries in the network and configure GVRP settings to limit the VLAN propagation.

When GVRP is globally enabled for the switch, the default setting allows all the ports to transmit and receive VLAN advertisements, as well as automatically

join VLANs. To control and limit the VLAN propagation in a network, you can disable GVRP on ports to prevent advertisements from being propagated, or to

forbid ports from joining specific VLANs. The VLAN Membership page allows you to set ports as Forbidden, which prevents them from joining a VLAN through

GVRP.

NOTICE:

GVRP-learned VLANs on the switch do not have assigned IP addresses. Therefore, the management VLAN must be statically configured on all

switches in the network before you implement GVRP.

For more information on VLANs and GVRP see "VLANs."

NOTICE:

GVRP must be globally enabled for the switch before you can individually enable GVRP for a specific port or trunk.

To save any changes you make in this page, click Apply Changes. If you don't want to save the changes, click Refresh.

CLI Commands

The following table summarizes the equivalent CLI commands for items in the VLAN/GVRP page.

Command

bridge-ext gvrp