3com S7906E Manuel De Montage

 

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The GARP VLAN Registration Protocol (GVRP) is a GARP application. It functions based on the 

operating mechanism of GARP to maintain and propagate dynamic VLAN registration information for 

the GVRP devices on the network.  

When configuring GVRP, go to these sections for information you are interested in: 

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The Generic Attribute Registration Protocol (GARP) provides a mechanism that allows participants in a 

GARP application to distribute, propagate, and register with other participants in a LAN the attributes 

specific 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 GARP 

applications. One example is GVRP. When a GARP participant is present on a port on your device, the 

port is regarded as a GARP participant.  

1)  GARP messages  

A GARP participant exchanges information with other GARP participants by sending the following three 

types of messages: 

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Join messages to register with other entities its attributes, the attributes received from other GARP 

application entities, and the attributes manually configured on it.  

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Leave messages to have its attributes deregistered on other devices. A GARP participant also 

sends Leave messages when it receives Leave messages from other GARP participants or when 

attributes are manually deregistered on it.  

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LeaveAll messages to deregister all the attributes so that all GARP participants can re-register all 

attributes with each other. A LeaveAll message is sent upon expiration of a LeaveAll timer, which 

starts upon the startup of a GARP application entity.  

Join messages, Leave messages, and LeaveAll message make sure the reregistration and 

deregistration of GARP attributes are performed in an orderly way.  

Through message exchange, all attribute information that needs registration propagates to all GARP 

participants on the LAN.  

2) GARP 

timers 

GARP uses the following four timers to set the interval for sending GARP messages: