Entity
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The RFCs that currently define the High-Level Entity Management
System are this memo along with RFC-1022 ...
... control, but also defining a set of control operations which are
generally applicable across a diverse set of devices. Permitting
remote applications to exercise control over an entity also implies
the need for a suite of safeguards to ensure that unauthorized
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... query processor which can
reside on any addressable entity, an event generator which also
resides on entities, and applications which know how to send requests
to the query ...
... processor locates the objects in
its host entity, and performs the requested operations. The objects
are self-describing, using the binary-encoding scheme defined in ISO ...
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The set of maintained objects is standardized across all entities.
Every entity is required to manage a small set of objects. In
addition, entities of a particular type (e.g., a gateway) may be
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... required to manage a larger set of objects, which are optional on
other entities. Entities are also permitted to make additional,
entity-specific objects available to applications. A method for
discovering the existence of additional objects is defined.
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... Each event is given a well-known code, which is standardized across
all entities. Provision is also made for entity specific event
codes.
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... query processor. Among other functions, the applications will have
to be able to identify and parse entity-specific values which may be
returned.
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... processors and applications communicate using an application-
specific monitoring protocol, the High-Level Entity Management
Protocol (HEMP). This protocol provides the formatting rules for the
queries ...
... monitoring data (which is presumably diagnostic) get back to the
application and that control requests are reliably delivered to the
entity. In such circumstances, a reliable protocol is essential.
Events provide yet another bit ...