1-11 GVRP ConfigurationThe GARP VLAN Registration Protocol (GVRP) is a GARP application. It functions based on theoperating mechanism of GARP to maintain and propagate dynamic VLAN registration information forthe GVRP devices on the network.When configuring GVRP, go to these sections for information you are interested in:z Introduction to GVRPz GVRP Configuration Task Listz Configuring GVRP Functionsz Configuring GARP Timersz Displaying and Maintaining GVRPz GVRP Configuration ExamplesIntroduction to GVRPGARPThe Generic Attribute Registration Protocol (GARP) provides a mechanism that allows participants in aGARP application to distribute, propagate, and register with other participants in a LAN the attributesspecific to the GARP application, such as the VLAN or multicast address attribute.GARP itself does not exist on a device as an entity. GARP-compliant participants are known as GARPapplications. One example is GVRP. When a GARP participant is present on a port on your device, theport is regarded as a GARP participant.GARP messages and timers1) GARP messagesA GARP application entity exchanges information with other GARP application entities by:z Sending Join messages to register with other entities its attributes, the attributes received fromother GARP application entities, and the attributes manually configured on it.z Sending Leave messages to have its attributes deregistered on other devices. A GARP participantalso sends Leave messages when it receives Leave messages from other GARP participants orwhen attributes are manually deregistered on it.z Sending LeaveAll messages to deregister all the attributes so that all GARP participants canre-register all attributes with each other. A LeaveAll message is sent upon expiration of a LeaveAlltimer, which starts upon the startup of a GARP application entity.Join messages, Leave messages, and LeaveAll message make sure the reregistration andderegistration of GARP attributes are performed in an orderly way.Through message exchange, all attribute information that needs registration propagates to all GARPparticipants on the LAN.2) GARP timersGARP uses the following four timers to set the interval for sending GARP messages:
