Operation Manual – GVRP
H3C S3100 Series Ethernet Switches Chapter 1 GVRP Configuration
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Chapter 1 GVRP Configuration
When configuring GVRP, go to these sections for information you are interested in:
z Introduction to GVRP
z GVRP Configuration
z Displaying and Maintaining GVRP
z GVRP Configuration Example
1.1 Introduction to GVRP
GARP VLAN registration protocol (GVRP) is an implementation of generic attribute
registration protocol (GARP). GARP is introduced as follows.
1.1.1 GARP
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 bridged LAN the attributes specific to the GARP application, such as
the VLAN or multicast attribute.
GARP itself does not exist on a device as an entity. GARP-compliant application
entities are called GARP applications. One example is GVRP. When a GARP
application entity is present on a port on your device, this port is regarded a GARP
application entity.
I. GARP messages and timers
1) GARP messages
GARP members communicate with each other through the messages exchanged
between them. The messages performing important functions for GARP fall into three
types: Join, Leave and LeaveAll.
z When a GARP entity wants its attribute information to be registered on other
devices, it sends Join messages to these devices. A GARP entity also sends Join
messages when it receives Join messages from other entities or it wants some of
its statically configured attributes to be registered on other GARP entities.
z When a GARP entity wants some of its attributes to be deregistered on other
devices, it sends Leave messages to these devices. A GARP entity also sends
Leave messages when it receives Leave messages from other entities for
deregistering some attributes or it has some attributes statically deregistered.
z Once a GARP entity is launched, the LeaveAll timer is triggered at the same time.
The GARP entity sends out LeaveAll messages after the timer times out. LeaveAll
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