1-4GVRPAs an implementation of GARP, GARP VLAN registration protocol (GVRP) maintains dynamic VLANregistration information and propagates the information to the other switches through GARP.With GVRP enabled on a device, the VLAN registration information received by the device from otherdevices is used to dynamically update the local VLAN registration information, including the informationabout the VLAN members, the ports through which the VLAN members can be reached, and so on. Thedevice also propagates the local VLAN registration information to other devices so that all the devices inthe same LAN can have the same VLAN information. VLAN registration information propagated byGVRP includes static VLAN registration information, which is manually configured locally on eachdevice, 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 inthe following.z Normal. A port in this mode can dynamically register/deregister VLANs and propagatedynamic/static VLAN information.z Fixed. A port in this mode cannot register/deregister VLANs dynamically. It only propagates staticVLAN information. Besides, the port permits only static VLANs, that is, it propagates only staticVLAN information to the other GARP members.z Forbidden. A port in this mode cannot register/deregister VLANs dynamically. It permits only thedefault VLAN (namely, VLAN 1), that is, the port propagates only the information about VLAN 1 tothe other GARP members.Protocol SpecificationsGVRP is defined in IEEE 802.1Q standard.GVRP ConfigurationGVRP Configuration TasksComplete the following tasks to configure GVRP:Task RemarksEnabling GVRP RequiredConfiguring GVRP Timers OptionalConfiguring GVRP Port Registration Mode OptionalEnabling GVRPConfiguration PrerequisiteThe port on which GVRP will be enabled must be set to a trunk port.Configuration procedureFollow these steps to enable GVRP:
