12 GVRP CONFIGURATIONGARP VLAN registration protocol (GVRP) is a “GARP” on page 271 application. Itfunctions based on the operating mechanism of GARP to maintain and propagatedynamic VLAN registration information for the GVRP devices on the network.When configuring GVRP, go to these sections for information you are interestedin:■ “Introduction to GVRP” on page 271■ “Configuring GVRP” on page 275■ “Displaying and Maintaining GVRP” on page 276■ “GVRP Configuration Example” on page 276Introduction to GVRP This section covers these topics:■ “GARP” on page 271■ “GVRP Configuration” on page 271■ “Protocols and Standards” on page 274GARP Generic attribute registration protocol (GARP) provides a mechanism that allowsparticipants in a GARP application to distribute, propagate, and register with otherparticipants in a bridged LAN the attributes specific to the GARP application, suchas the VLAN or multicast address attribute.GARP itself does not exist on a device as an entity. GARP-compliant applicationentities are called GARP applications. One example is GVRP. When a GARPapplication entity is present on a port on your device, this port is regarded a GARPapplication entity.This section covers these topics:■ “GARP messages and timers” on page 271■ “Operating mechanism of GARP” on page 273■ “GARP message format” on page 273GARP messages and timers1 GARP messagesGARP participants exchange information through the following three types ofmessages: Join message, Leave message, and LeaveAll message.
