Administrator Guide

1596 Audio Video Bridging
MMRP, MVRP and MSRP share a common framework that provides services
to the individual protocols. The common framework is the Multiple
Registration Protocol (MRP). MRP allows participants in an MRP application
to register attributes with other participants in a Bridged LAN. Each MRP
participant maintains:
• Registrar and Applicant state machine for each attribute of interest
• LeaveAll and PeriodicTransmission state machine support for the
participant
MRP propagates the attribute registrations throughout the AVB network.
AVB network participants are aware of all other participants and their
attribute registrations. VLAN bridges that do not support MRP forward
received MRPDUs on all ports that are in forwarding state.
MRP implements as many MRP Attribute Protocol (MAP) contexts as there
are MSTP instances. Within each MAP context, one participant is created for
each bridge port and for each MRP application (MMRP, MSRP or MVRP).
The AVB protocol family implements the following attributes:
Address Range Function
91:E0:F0:00:00:00–91:E0:F0:00:FD:FF Dynamic Allocation Pool
91:E0:F0:00:FE:00–91:E0:F0:00:FE:FF Locally administered pool
91:E0:F0:00:FF:00–91:E0:F0:00:FF:FF Reserved pool
Protocol Attribute
MVRP A VLAN identifier
MMRP A VLAN MAC address association
MSRP A domain attribute is a logical traffic class (A or B).
A talker attribute identifying a stream from a transmitting
station.
A listener attribute identify a steam request from receiving
station.