H3C Technologies H3C S12500 Series Switches - Manual (Page 247)

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Configuring MVRP
Overview
Multiple Registration Protocol (MRP) is an attribute registration protocol and transmits attribute messages.
An application that complies with MRP is called an "MRP application." Multiple VLAN Registration
Protocol (MVRP) is a typical MRP application. MRP is an enhanced version of Generic Attribute
Registration Protocol (GARP) and improves the declaration efficiency. MVRP is an enhanced version of
GARP VLAN Registration Protocol (GVRP) and improves the declaration efficiency. MVRP propagates
VLAN configuration information among devices, and enables devices to learn and automatically
synchronize VLAN configuration information, reducing the configuration workload. When the network
topology changes, MVRP can propagate and learn VLAN configuration information again according to
the new topology, and real-time synchronize the network topology. For more information about GVRP,
see "Configuring GVRP."
Introduction to MRP
Different from GARP, MRP allows participants in the same LAN to declare, propagate, and register
information (for example, VLAN information) on a per Multiple Spanning Tree Instance (MSTI) basis.
MRP implementation
Each port that participates in an MRP application (for example, MVRP) is called an "MRP participant."
MRP rapidly propagates the configuration information of an MRP participant throughout the LAN. As
shown in Figure 85 , an MRP participant registers and deregisters its attribute values on other MRP
participants by sending declarations and withdrawals, and registers and deregisters the attribute values
of other participants according to the received declarations and withdrawals.
Figure 85 MRP implementation
MRP messages
MRP exchanges information among MRP participants by advertising MRP messages, including Join,
New, Leave, and LeaveAll. Join and New messages are declarations, and Leave and LeaveAll messages
are withdrawals. As an MRP application, MVRP also uses MRP messages for information exchange.
• Join message