MIB Descriptions
C-8 7112-A2-GB20-10March 1998

Table C-3. Extension to Interface Table (ifXTable) (2 of 2)

Object, OID, Access Setting/ContentsDescription
ifHighSpeed
(ifXEntry 15)
1.3.6.1.2.1.31.1.1.1.15
read-only
Reflects the ifSpeed setting
for the interface.
Supported as a read-only
variable.
This object is supported for
the Ethernet Network T1
and User Data Port only.
0 – ifSpeed from 0 to
499,999 bps
1 – ifSpeed from 500,000 to
1, 499,999 bps
2 –ifSpeed from 1,500,000
to 1, 536,000 bps
10 – ifSpeed from 4999,000
to
10,499,000 bps
ifConnectorPresent
(ifXEntry 17)
1.3.6.1.2.1.31.1.1.1.17
read-only
Indicates whether there is a
physical connector for the
interface.
true(1) – Will always have
this value for the Network
T1, User Data port.
false(2) –Will always have
this value for the FDL.
Interface Stack Group

The Interface Stack Group is used by the unit to show the relationship between a

logical interface and a physical interface. 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.

Table C-4. Interface Stack Group Objects (1 of 2)

Object, OID, Access Description Setting/Contents
ifStackHigherLayer
(ifStackEntry1)
1.3.6.1.2.1.31.1.2.1.1
read-only
Provides the index that
corresponds to the higher
sublevel specified by
ifStackLowerLayer.
When the FDL in-band
management channel is enabled,
this object for the network T1
interface is set to the ifIndex of
the FDL. All other
ifStackHigherLayer objects will
have a value of zero.
ifStackLowerLayer
(ifStackEntry2)
1.3.6.1.2.1.31.1.2.1.2
read-only
Provides the index that
corresponds to the lower
sublevel specified by
ifStackHigherLayer.
When the FDL in-band
management channel is enabled,
this object (for the FDL) is set to
the ifIndex of the network T1
interface. All other
ifStackLowerLayer objects will
have a value of zero.