MIB DescriptionsC-77612-A2-GB20-00 June 1997Interface Stack GroupThe Interface Stack Group is used by the unit to show the relationship between alogical interface and a physical interface. Table C-4 provides clarification forobjects contained in the Interface Stack group when it is not clear how the objectdefinition in RFC 1573 is supported by the unit.Table C-4. Interface Stack Group ObjectsObject Description Setting/ContentsifStackHigher-Layer(ifStackEntry1)Provides the index thatcorresponds to the highersublevel specified byifStackLowerLayer.When the In-band Management Channelis enabled, this object for the DDSnetwork interface is set to the ifIndex ofthe In-band Management Channel. Allother ifStackHigherLayer objects willhave a value of zero.ifStackLower-Layer(ifStackEntry2)Provides the index thatcorresponds to the lowersublevel specified byifStackHigherLayer.When the In-band Management Channelis enabled, this object for the In-bandManagement Channel is set to theifIndex of the DDS network interface. Allother ifStackLowerLayer objects willhave a value of zero.ifStackStatus(ifStackEntry3)Specifies the stack group’sstatus compared to theinterface’s ifOperStatus.Supported as a read-onlyvariable. When ifStackStatus set to active –maps to ifOperStatus set to up(1) ortesting(3). When ifStackStatus set to not inservice – maps to ifOperStatus set todown(2).
