3Com WX3000 operation manual Gvrp Configuration, Protocol Specifications, Enabling Gvrp

GVRP

As an implementation of GARP, GARP VLAN registration protocol (GVRP) maintains dynamic VLAN registration information and propagates the information to the other devices through GARP.

With GVRP enabled on a device, the VLAN registration information received by the device from other devices is used to dynamically update the local VLAN registration information, including the information about the VLAN members, the ports through which the VLAN members can be reached, and so on. The device also propagates the local VLAN registration information to other devices so that all the devices in the same LAN can have the same VLAN information. VLAN registration information propagated by GVRP includes static VLAN registration information, which is manually configured locally on each device, and dynamic VLAN registration information, which is received from other devices.

GVRP has the following three port registration modes: Normal, Fixed, and Forbidden, as described in the following.

z

z

z

Normal. A port in this mode can dynamically register/deregister VLANs and propagate dynamic/static VLAN information.

Fixed. A port in this mode cannot register/deregister VLANs dynamically. It only propagates static VLAN information. Besides, the port permits only static VLANs, that is, it propagates only static VLAN information to the other GARP members.

Forbidden. A port in this mode cannot register/deregister VLANs dynamically. It permits only the default VLAN (namely, VLAN 1), that is, the port propagates only the information about VLAN 1 to the other GARP members.

Protocol Specifications

GVRP is defined in IEEE 802.1Q standard.

GVRP Configuration

Configuration Task List

Complete the following tasks to configure GVRP:

Task	Remarks
Enabling GVRP	Required
Configuring GVRP Timers	Optional
Configuring GVRP Port Registration Mode	Optional

Enabling GVRP

Configuration Prerequisite

The port on which GVRP will be enabled must be set to a trunk port.

1-4