MIB Descriptions
B-14
9161-A2-GH30-20
September 1997
Interface Stack Group
The Interface Stack Group consist of an object containing information on the
relationships between the multiple sublayers or network interfaces. The following
table provides clarification for objects contained in the Interface Stack group
when it is not clear how the object definition in RFC 1573 is supported by the unit.
Object
Description
Setting/Contents
ifStackHigher-
Layer
(ifStackEntry1)
Provides the index that
corresponds to the higher
sublevel specified by
ifStackLowerLayer.
When the FDL or DDL management
channel is enabled, this object for the
T1 network interface is set to the
ifIndex of the FDL or DDL.
For synchronous data port, this object
is set to ifIndex of the EDL for that
port if EDL management link is
enabled.
All other ifIndex objects will have a
value of zero.
ifStackLower-
Layer
(ifStackEntry2)
Provides the index that
corresponds to the lower
sublevel specified by
ifStackHigherLayer.
When the FDL or DDL management
channel is enabled, this object for the
T1 network interface is set to the
ifIndex of the FDL or DDL.
For an EDL management link, this
object is set to ifIndex of the
corresponding synchronous data port.
All other ifIndex objects will have a
value of zero.
ifStackStatus
(ifStackEntry3)
Specifies the stack group’s
status compared to the
interface’s ifOperStatus.
Supported as a read-only
variable.
When ifStackStatus set to active –
maps to ifOperStatus set to up(1) or
testing(3).
When ifStackStatus set to not in
service – maps to ifOperStatus set to
down(2).
Interface Test Table
Not supported by the T1 access unit. The T1 access unit does not support
concurrent tests running on the same interface. All tests are supported in the
individual MIBs.
Generic Receive Address Table
Not supported by the T1 access unit.