known by this agent, there are zero or more mappings to the
physical resources, which are used to realize that logical
entity.
An agent should limit the number and nature of entries in
this table such that only meaningful and non-redundant
information is returned. For example, in a system that
contains a single power supply, mappings between logical
entities and the power supply are not useful and should not
be included.
Also, only the most appropriate physical component, which is
closest to the root of a particular containment tree, should
be identified in an entLPMapping entry.
For example, suppose a bridge is realized on a particular
module, and all ports on that module are ports on this
bridge. A mapping between the bridge and the module would
be useful, but additional mappings between the bridge and
each of the ports on that module would be redundant (because
the entPhysicalContainedIn hierarchy can provide the same
information). On the other hand, if more than one bridge
were utilizing ports on this module, then mappings between
each bridge and the ports it used would be appropriate.
Also, in the case of a single backplane repeater, a mapping
for the backplane to the single repeater entity is not
necessary."
::= { entityMapping 1 }
entLPMappingEntry OBJECT-TYPE
SYNTAX EntLPMappingEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Information about a particular logical entity to physical
equipment association. Note that the nature of the
association is not specifically identified in this entry.
It is expected that sufficient information exists in the
MIBs used to manage a particular logical entity to infer how
physical component information is utilized."
INDEX { entLogicalIndex, entLPPhysicalIndex }
::= { entLPMappingTable 1 }
EntLPMappingEntry ::= SEQUENCE {
entLPPhysicalIndex PhysicalIndex
}
entLPPhysicalIndex OBJECT-TYPE
SYNTAX PhysicalIndex
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of this object identifies the index value of a
particular entPhysicalEntry associated with the indicated
entLogicalEntity."
::= { entLPMappingEntry 1 }
-- logical entity/component to alias table
entAliasMappingTable OBJECT-TYPE
SYNTAX SEQUENCE OF EntAliasMappingEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"This table contains zero or more rows, representing
mappings of logical entity and physical component to
external MIB identifiers. Each physical port in the system
may be associated with a mapping to an external identifier,
which itself is associated with a particular logical
entity’s naming scope. A ’wildcard’ mechanism is provided
to indicate that an identifier is associated with more than
one logical entity."
::= { entityMapping 2 }
entAliasMappingEntry OBJECT-TYPE
SYNTAX EntAliasMappingEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"Information about a particular physical equipment, logical
entity to external identifier binding. Each logical
entity/physical component pair may be associated with one
alias mapping. The logical entity index may also be used as
a ’wildcard’ (refer to the entAliasLogicalIndexOrZero object
DESCRIPTION clause for details.)
Note that only entPhysicalIndex values that represent
physical ports (i.e., associated entPhysicalClass value is
’port(10)’) are permitted to exist in this table."
INDEX { entPhysicalIndex, entAliasLogicalIndexOrZero }
::= { entAliasMappingTable 1 }
EntAliasMappingEntry ::= SEQUENCE {
entAliasLogicalIndexOrZero Integer32,
entAliasMappingIdentifier RowPointer
}
entAliasLogicalIndexOrZero OBJECT-TYPE
SYNTAX Integer32 (0..2147483647)
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"The value of this object identifies the logical entity
that defines the naming scope for the associated instance
of the ’entAliasMappingIdentifier’ object.
If this object has a non-zero value, then it identifies the
logical entity named by the same value of entLogicalIndex.
If this object has a value of zero, then the mapping between
the physical component and the alias identifier for this
entAliasMapping entry is associated with all unspecified
logical entities. That is, a value of zero (the default
mapping) identifies any logical entity that does not have
an explicit entry in this table for a particular
entPhysicalIndex/entAliasMappingIdentifier pair.
For example, to indicate that a particular interface (e.g.,
physical component 33) is identified by the same value of
ifIndex for all logical entities, the following instance
might exist:
entAliasMappingIdentifier.33.0 = ifIndex.5
In the event an entPhysicalEntry is associated differently
for some logical entities, additional entAliasMapping
entries may exist, e.g.:
entAliasMappingIdentifier.33.0 = ifIndex.6
entAliasMappingIdentifier.33.4 = ifIndex.1
entAliasMappingIdentifier.33.5 = ifIndex.1
entAliasMappingIdentifier.33.10 = ifIndex.12
Note that entries with non-zero entAliasLogicalIndexOrZero
index values have precedence over zero-indexed entries. In
this example, all logical entities except 4, 5, and 10,
associate physical entity 33 with ifIndex.6."
::= { entAliasMappingEntry 1 }
entAliasMappingIdentifier OBJECT-TYPE
SYNTAX RowPointer
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of this object identifies a particular conceptual
row associated with the indicated entPhysicalIndex and
entLogicalIndex pair.
Because only physical ports are modeled in this table, only
entries that represent interfaces or ports are allowed. If
an ifEntry exists on behalf of a particular physical port,
then this object should identify the associated ’ifEntry’.
For repeater ports, the appropriate row in the
’rptrPortGroupTable’ should be identified instead.
For example, suppose a physical port was represented by
entPhysicalEntry.3, entLogicalEntry.15 existed for a
repeater, and entLogicalEntry.22 existed for a bridge. Then
there might be two related instances of
entAliasMappingIdentifier:
entAliasMappingIdentifier.3.15 == rptrPortGroupIndex.5.2
entAliasMappingIdentifier.3.22 == ifIndex.17
It is possible that other mappings (besides interfaces and
repeater ports) may be defined in the future, as required.
Bridge ports are identified by examining the Bridge MIB and
appropriate ifEntries associated with each ’dot1dBasePort’,
and are thus not represented in this table."
::= { entAliasMappingEntry 2 }
-- physical mapping table
entPhysicalContainsTable OBJECT-TYPE
SYNTAX SEQUENCE OF EntPhysicalContainsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A table that exposes the container/’containee’
relationships between physical entities. This table
provides all the information found by constructing the
virtual containment tree for a given entPhysicalTable, but
in a more direct format.
In the event a physical entity is contained by more than one
other physical entity (e.g., double-wide modules), this
table should include these additional mappings, which cannot
be represented in the entPhysicalTable virtual containment
tree."
::= { entityMapping 3 }
entPhysicalContainsEntry OBJECT-TYPE
SYNTAX EntPhysicalContainsEntry
MAX-ACCESS not-accessible
STATUS current
DESCRIPTION
"A single container/’containee’ relationship."
INDEX { entPhysicalIndex, entPhysicalChildIndex }
::= { entPhysicalContainsTable 1 }
EntPhysicalContainsEntry ::= SEQUENCE {
entPhysicalChildIndex PhysicalIndex
}
entPhysicalChildIndex OBJECT-TYPE
SYNTAX PhysicalIndex
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of entPhysicalIndex for the contained physical
entity."
::= { entPhysicalContainsEntry 1 }
-- last change time stamp for the whole MIB
entLastChangeTime OBJECT-TYPE
SYNTAX TimeStamp
MAX-ACCESS read-only
STATUS current
DESCRIPTION
"The value of sysUpTime at the time a conceptual row is
created, modified, or deleted in any of these tables:
- entPhysicalTable
- entLogicalTable
- entLPMappingTable
- entAliasMappingTable
- entPhysicalContainsTable
"
::= { entityGeneral 1 }
-- Entity MIB Trap Definitions
entityMIBTraps OBJECT IDENTIFIER ::= { entityMIB 2 }
entityMIBTrapPrefix OBJECT IDENTIFIER ::= { entityMIBTraps 0 }
entConfigChange NOTIFICATION-TYPE
STATUS current
DESCRIPTION
"An entConfigChange notification is generated when the value
of entLastChangeTime changes. It can be utilized by an NMS
to trigger logical/physical entity table maintenance polls.
An agent should not generate more than one entConfigChange
’notification-event’ in a given time interval (five seconds
is the suggested default). A ’notification-event’ is the
transmission of a single trap or inform PDU to a list of
notification destinations.
If additional configuration changes occur within the
throttling period, then notification-events for these
changes should be suppressed by the agent until the current
throttling period expires. At the end of a throttling
period, one notification-event should be generated if any
configuration changes occurred since the start of the
throttling period. In such a case, another throttling
period is started right away.
An NMS should periodically check the value of
entLastChangeTime to detect any missed entConfigChange
notification-events, e.g., due to throttling or transmission
loss."
::= { entityMIBTrapPrefix 1 }
-- conformance information
entityConformance OBJECT IDENTIFIER ::= { entityMIB 3 }
entityCompliances OBJECT IDENTIFIER ::= { entityConformance 1 }
entityGroups OBJECT IDENTIFIER ::= { entityConformance 2 }
-- compliance statements
entityCompliance MODULE-COMPLIANCE
STATUS deprecated
DESCRIPTION
"The compliance statement for SNMP entities that implement
version 1 of the Entity MIB."
MODULE -- this module
MANDATORY-GROUPS {
entityPhysicalGroup,
entityLogicalGroup,
entityMappingGroup,
entityGeneralGroup,
entityNotificationsGroup
}
::= { entityCompliances 1 }
entity2Compliance MODULE-COMPLIANCE
STATUS deprecated
DESCRIPTION
"The compliance statement for SNMP entities that implement
version 2 of the Entity MIB."
MODULE -- this module
MANDATORY-GROUPS {
entityPhysicalGroup,
entityPhysical2Group,
entityGeneralGroup,
entityNotificationsGroup
}
GROUP entityLogical2Group
DESCRIPTION
"Implementation of this group is not mandatory for agents
that model all MIB object instances within a single naming
scope."
GROUP entityMappingGroup
DESCRIPTION
"Implementation of the entPhysicalContainsTable is mandatory
for all agents. Implementation of the entLPMappingTable and
entAliasMappingTables are not mandatory for agents that
model all MIB object instances within a single naming scope.
Note that the entAliasMappingTable may be useful for all
agents; however, implementation of the entityLogicalGroup or
entityLogical2Group is required to support this table."
OBJECT entPhysicalSerialNum
MIN-ACCESS not-accessible
DESCRIPTION
"Read and write access is not required for agents that
cannot identify serial number information for physical
entities, and/or cannot provide non-volatile storage for
NMS-assigned serial numbers.
Write access is not required for agents that can identify
serial number information for physical entities, but cannot
provide non-volatile storage for NMS-assigned serial
numbers.
Write access is not required for physical entities for which
the associated value of the entPhysicalIsFRU object is equal
to ’false(2)’."
OBJECT entPhysicalAlias
MIN-ACCESS read-only
DESCRIPTION
"Write access is required only if the associated
entPhysicalClass value is equal to ’chassis(3)’."
OBJECT entPhysicalAssetID
MIN-ACCESS not-accessible
DESCRIPTION
"Read and write access is not required for agents that
cannot provide non-volatile storage for NMS-assigned asset
identifiers.
Write access is not required for physical entities for which
the associated value of the entPhysicalIsFRU object is equal
to ’false(2)’."
OBJECT entPhysicalClass
SYNTAX INTEGER {
other(1),
unknown(2),
chassis(3),
backplane(4),
container(5),
powerSupply(6),
fan(7),
sensor(8),
module(9),
port(10),
stack(11)
}
DESCRIPTION
"Implementation of the ’cpu(12)’ enumeration is not
required."
::= { entityCompliances 2 }
entity3Compliance MODULE-COMPLIANCE
STATUS current
DESCRIPTION
"The compliance statement for SNMP entities that implement
version 3 of the Entity MIB."
MODULE -- this module
MANDATORY-GROUPS {
entityPhysicalGroup,
entityPhysical2Group,
entityPhysical3Group,
entityGeneralGroup,
entityNotificationsGroup
}
GROUP entityLogical2Group
DESCRIPTION
"Implementation of this group is not mandatory for agents
that model all MIB object instances within a single naming
scope."
GROUP entityMappingGroup
DESCRIPTION
"Implementation of the entPhysicalContainsTable is mandatory
for all agents. Implementation of the entLPMappingTable and
entAliasMappingTables are not mandatory for agents that
model all MIB object instances within a single naming scope.
Note that the entAliasMappingTable may be useful for all
agents; however, implementation of the entityLogicalGroup or
entityLogical2Group is required to support this table."
OBJECT entPhysicalSerialNum
MIN-ACCESS not-accessible
DESCRIPTION
"Read and write access is not required for agents that
cannot identify serial number information for physical
entities, and/or cannot provide non-volatile storage for
NMS-assigned serial numbers.
Write access is not required for agents that can identify
serial number information for physical entities, but cannot
provide non-volatile storage for NMS-assigned serial
numbers.
Write access is not required for physical entities for
which the associated value of the entPhysicalIsFRU object
is equal to ’false(2)’."
OBJECT entPhysicalAlias
MIN-ACCESS read-only
DESCRIPTION
"Write access is required only if the associated
entPhysicalClass value is equal to ’chassis(3)’."
OBJECT entPhysicalAssetID
MIN-ACCESS not-accessible
DESCRIPTION
"Read and write access is not required for agents that
cannot provide non-volatile storage for NMS-assigned asset
identifiers.
Write access is not required for physical entities for which
the associated value of entPhysicalIsFRU is equal to
’false(2)’."
::= { entityCompliances 3 }
-- MIB groupings
entityPhysicalGroup OBJECT-GROUP
OBJECTS {
entPhysicalDescr,
entPhysicalVendorType,
entPhysicalContainedIn,
entPhysicalClass,
entPhysicalParentRelPos,
entPhysicalName
}
STATUS current
DESCRIPTION
"The collection of objects used to represent physical
system components, for which a single agent provides
management information."
::= { entityGroups 1 }
entityLogicalGroup OBJECT-GROUP
OBJECTS {
entLogicalDescr,
entLogicalType,
entLogicalCommunity,
entLogicalTAddress,
entLogicalTDomain
}
STATUS deprecated
DESCRIPTION
"The collection of objects used to represent the list of
logical entities, for which a single agent provides
management information."
::= { entityGroups 2 }
entityMappingGroup OBJECT-GROUP
OBJECTS {
entLPPhysicalIndex,
entAliasMappingIdentifier,
entPhysicalChildIndex
}
STATUS current
DESCRIPTION
"The collection of objects used to represent the
associations between multiple logical entities, physical
components, interfaces, and port identifiers, for which a
single agent provides management information."
::= { entityGroups 3 }
entityGeneralGroup OBJECT-GROUP
OBJECTS {
entLastChangeTime
}
STATUS current
DESCRIPTION
"The collection of objects used to represent general entity
information, for which a single agent provides management