EPCglobal Network 27
LLRP is speci?¬?cally concerned with providing the formats and procedures of communications
between a client and a reader. The LLRP protocol data units are called messages.
LLRP operation consists of the following phases of execution: capability discovery; device
con?¬?guration; an optional inventory and access operations setup; inventory cycles; RF
survey operations and reports returned to the Client.
The speci?¬?cation de?¬?nes a number of objects and commands, along with their parameters
(data ?¬?elds).
2.8 Reader Management
The Reader Management Speci?¬?cation (EPCglobal, 2006d) de?¬?nes a protocol used by
management software to monitor the operating status and health of EPCglobal compliant
tag readers, and de?¬?nes the EPCglobal Simple Network Management Protocol (SNMP)
RFID Management Information Bases (MIB), and speci?¬?es the set of SNMP MIBII (a subtree
that contains basic objects) groups required to comply with this EPCglobal Reader
Management Speci?¬?cation over SNMP. The Reader Management Protocol speci?¬?es the
interaction between a device capable of interfacing with tags (reader) and management
software (host). The speci?¬?cation de?¬?nes two separate but related management protocol
speci?¬?cations; the ?¬?rst speci?¬?es the EPCglobal SNMP MIB for monitoring the health of a
reader, whereas the second speci?¬?es the EPCglobal Reader Management Protocol for
monitoring the health of a reader.
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