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IF-INVERTED-STACK-MIB DEFINITIONS ::= BEGIN
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MODULE-IDENTITY, OBJECT-TYPE, mib-2 FROM SNMPv2-SMI
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RowStatus FROM SNMPv2-TC
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MODULE-COMPLIANCE, OBJECT-GROUP FROM SNMPv2-CONF
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ifStackHigherLayer, ifStackLowerLayer FROM IF-MIB;
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ifInvertedStackMIB MODULE-IDENTITY
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LAST-UPDATED "200006140000Z"
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ORGANIZATION "IETF Interfaces MIB Working Group"
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San Jose, CA 95134-1706
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"The MIB module which provides the Inverted Stack Table for
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interface sub-layers."
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REVISION "200006140000Z"
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"Initial revision, published as RFC 2864"
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ifInvMIBObjects OBJECT IDENTIFIER ::= { ifInvertedStackMIB 1 }
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-- The Inverted Interface Stack Group
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ifInvStackTable OBJECT-TYPE
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SYNTAX SEQUENCE OF IfInvStackEntry
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MAX-ACCESS not-accessible
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"A table containing information on the relationships between
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the multiple sub-layers of network interfaces. In
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particular, it contains information on which sub-layers run
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'underneath' which other sub-layers, where each sub-layer
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corresponds to a conceptual row in the ifTable. For
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example, when the sub-layer with ifIndex value x runs
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underneath the sub-layer with ifIndex value y, then this
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ifInvStackStatus.x.y=active
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For each ifIndex value, z, which identifies an active
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interface, there are always at least two instantiated rows
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in this table associated with z. For one of these rows, z
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is the value of ifStackHigherLayer; for the other, z is the
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value of ifStackLowerLayer. (If z is not involved in
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multiplexing, then these are the only two rows associated
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For example, two rows exist even for an interface which has
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no others stacked on top or below it:
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ifInvStackStatus.z.0=active
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ifInvStackStatus.0.z=active
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This table contains exactly the same number of rows as the
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ifStackTable, but the rows appear in a different order."
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"ifStackTable of RFC 2863"
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::= { ifInvMIBObjects 1 }
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ifInvStackEntry OBJECT-TYPE
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SYNTAX IfInvStackEntry
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MAX-ACCESS not-accessible
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"Information on a particular relationship between two sub-
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layers, specifying that one sub-layer runs underneath the
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other sub-layer. Each sub-layer corresponds to a conceptual
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INDEX { ifStackLowerLayer, ifStackHigherLayer }
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::= { ifInvStackTable 1 }
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ifInvStackStatus RowStatus
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ifInvStackStatus OBJECT-TYPE
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"The status of the relationship between two sub-layers.
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An instance of this object exists for each instance of the
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ifStackStatus object, and vice versa. For example, if the
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variable ifStackStatus.H.L exists, then the variable
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ifInvStackStatus.L.H must also exist, and vice versa. In
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addition, the two variables always have the same value.
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However, unlike ifStackStatus, the ifInvStackStatus object
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is NOT write-able. A network management application wishing
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to change a relationship between sub-layers H and L cannot
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do so by modifying the value of ifInvStackStatus.L.H, but
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must instead modify the value of ifStackStatus.H.L. After
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the ifStackTable is modified, the change will be reflected
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::= { ifInvStackEntry 1 }
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-- conformance information
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ifInvConformance OBJECT IDENTIFIER ::= { ifInvMIBObjects 2 }
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ifInvGroups OBJECT IDENTIFIER ::= { ifInvConformance 1 }
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ifInvCompliances OBJECT IDENTIFIER ::= { ifInvConformance 2 }
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-- compliance statements
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ifInvCompliance MODULE-COMPLIANCE
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"The compliance statement for SNMP entities which provide
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inverted information on the layering of network interfaces."
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MODULE -- this module
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MANDATORY-GROUPS { ifInvStackGroup }
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OBJECT ifInvStackStatus
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SYNTAX INTEGER { active(1) }
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"Support is only required for 'active'."
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MANDATORY-GROUPS { ifStackGroup2 }
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::= { ifInvCompliances 1 }
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-- units of conformance
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ifInvStackGroup OBJECT-GROUP
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OBJECTS { ifInvStackStatus }
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"A collection of objects providing inverted information on
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the layering of MIB-II interfaces."
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::= { ifInvGroups 1 }
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mibs/IF-INVERTED-STACK-MIB.txt
