SNMP MIB Objects
E-5
3166-A2-GB20-10 November 1998
Interface Group – “ifSpeed” Object (ifEntry 5)
This object provides the interface’s current bandwidth in bits per second. The
value of this object for each interface is specified as follows:
T1 Interfaces: 1,544,000 bps.
COM: The currently configured data rate for the port.
Data Port: The currently configured data rate for the port when the port is
allocated to one of the T1 interfaces. If the port is not allocated
the data rate is defined as zero.
Interface Group – “ifAdminStatus” Object (ifEntry 7)
This object specifies the desired state (configuration) of the interface. This object
is supported only for the COM port. It provides the ability to switch between using
the port for SNMP or ASCII operations (dial-out, front panel emulation). The value
of this object will not affect the state of any of the interfaces on the DSU/CSU
other than the COM port. Only the following values are supported by the
DSU/CSU:
up(1) – The SNMP management link is active on the COM port.
testing(3) – The SNMP management link is inactive on the COM port. These
ports can be used for proprietary ASCII functions.
Interface Group – “ifOperStatus” Object (ifEntry 8)
This object specifies the current operational state of the interface. The value of
this object for each interface is defined as follows:
Network T1: The interface is up(1) when no alarm conditions exist.
The interface is down(2) when an alarm condition is active.
The interface is testing(3) when a test is active on the interface.
COM Port: When configured as an SNMP management link, up and down
are based on the current state of the link layer protocol.
Otherwise, the interface is always up(1).
The interface is never in the testing(3) state.
Data Port: The interface is up(1) when the port is assigned to a T1
interface, and both CTS and DSR are ON.
The interface is down(2) when the port is unassigned, or either
CTS or DSR is OFF.
The interface is testing(3) when a test is active on the interface.
Interface Group – “ifLastChange” Object (ifEntry 9)
This object contains the value of “sysUpTime” at the time the interface entered its
current operational state.