RFC 3433 (rfc3433) - Page 2 of 17
Entity Sensor Management Information Base
Alternative Format: Original Text Document
RFC 3433 Entity Sensor MIB December 2002
1. The Internet-Standard Management Framework
For a detailed overview of the documents that describe the current
Internet-Standard Management Framework, please refer to section 7 of
RFC 3410 [RFC 3410].
Managed objects are accessed via a virtual information store, termed
the Management Information Base or MIB. MIB objects are generally
accessed through the Simple Network Management Protocol (SNMP).
Objects in the MIB are defined using the mechanisms defined in the
Structure of Management Information (SMI). This memo specifies a MIB
module that is compliant to the SMIv2, which is described in STD 58,
RFC 2578 [RFC 2578], STD 58, RFC 2579 [RFC 2579] and STD 58, RFC 2580
[RFC 2580].
2. Overview
There is a need for a standardized way of obtaining information
related to the physical sensors which are commonly found in
networking equipment. Information such as the current value of the
sensor, the current operational status, and the data units precision
associated with the sensor, should be represented in a consistent
manner for any type of sensor.
Physical sensors are represented in the Entity MIB with
entPhysicalEntry and an entPhysicalClass value of 'sensor(8)'. The
information provided in the ENTITY-SENSOR-MIB module (defined in this
document) defines a sparse augmentation of the entPhysicalTable, for
entries which represent physical sensors.
2.1. Terms
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in BCP 14, RFC 2119.
[RFC 2119]
2.2. Relationship to the Entity MIB
The MIB objects defined in this document provide a sparse
augmentation to the entPhysicalTable in the Entity MIB, for entries
in which the associated entPhysicalClass object is equal to
'sensor(8)'. An agent is expected to maintain an entPhySensorEntry
with the same entPhysicalIndex value for each entPhysicalEntry
representing a physical sensor. Therefore, implementation of the
entityPhysicalGroup is required for agents that implement the Entity
Sensor MIB.
Bierman, et. al. Standards Track