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Configuring MVRP
About MVRP
Multiple Registration Protocol (MRP) is an attribute registration protocol used to transmit attribute
values. Multiple VLAN Registration Protocol (MVRP) is a typical MRP application. It synchronizes
VLAN information among devices and greatly reduces the workload of network administrators.
MRP implementation
An MRP-enabled port is called an MRP participant. An MVRP-enabled port is called an MVRP
participant.
As shown in Figure 1, an MRP
participant sends declarations and withdrawals to notify other
participants to register and deregister its attribute values. It also registers and deregisters the
attribute values of other participants according to the received declarations and withdrawals. MRP
rapidly propagates the configuration information of an MRP participant throughout the LAN.
Figure 1 MRP implementation
For example, MRP registers and deregisters VLAN attributes as follows:
• When a port receives a declaration for a VLAN, the port registers the VLAN and joins the VLAN.
• When a port receives a withdrawal for a VLAN, the port deregisters the VLAN and leaves the
VLAN.
MRP allows devices in the same LAN to transmit attribute values on a per MSTI basis. Figure 1
sho
ws a simple MRP implementation on an MSTI. In a network with multiple MSTIs, MRP performs
attribute registration and deregistration on a per MSTI basis. For more information about MSTIs, see
"Configuring spanning tree protocols."
MRP messages
MRP messages include the following types:
• Declaration—Includes Join and New messages.
• Withdrawal—Includes Leave and LeaveAll messages.
Join message
An MRP participant sends a Join message to request the peer participant to register attributes in the
Join message.
When receiving a Join message from the peer participant, an MRP participant performs the following
tasks:
• Registers the attributes in the Join message.
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