This document discusses common characteristics of DMI support across several
Transition Networks Point System products. Different products have different sets
of features, so some features you see here may not be supported by the product you are using.
| Partial MIB variable name |
Description |
RxPower |
Measured received optical power in microwatts.
Returns 0 if the feature is not supported.
|
RxPowerAlarm |
Values: normal(1), notSupported(2), lowWarn(3),
highWarn(4), lowAlarm(5), highAlarm(6), notApplicable(7)
Alarm status of measured receive optical power.
A Warn value indicates that some component or media in the channel may be degrading
and an inspection is warranted. An Alarm value indicates a more severe problem
that may already be preventing traffic from flowing. Values with low indicate that the
receive power is lower than expected, and values with high indicate that it is higher
than expected. All values represent comparisons to a standard threshold known to the device,
except for interfaces where a RxPowerThreshold variable is supported, in which case
the default lowAlarm threshold may be overridden by setting a non-zero value into
RxPowerThreshold. Additionally, when RxPowerThreshold is
non-zero, the converter will stop
passing traffic when a lowAlarm condition is detected.
The value notApplicable means that the interface you are examining is not
one that can be ever expected to have DMI support. This arises when diverse interfaces are
indexed by subdevice, and not all interfaces are candidates for DMI support. For example,
this value will be returned
if this variable is read for the subdevice corresponding to the serial port on a C4TEF100.
Some devices never return notApplicable.
The value notSupported means that the interface you are examining
may be a candidate for DMI support in some configurations, but either due to
the particular revision of the main board or due to the type of installed transceiver module,
DMI support is not currently available.
|
RxPowerThreshold |
This variable allows the lowAlarm
threshold for RxPowerAlarm to be
adjusted. If a non-zero value (in microwatts) is
set into this variable, it replaces the
built-in threshold AND instructs the converter
to stop passing traffic when the receive power
drops below the new threshold.
This feature is sometimes referred to as 'Intrusion Detection,'
since tapping into a fiber to intercept traffic leads to a reduction in receive power.
If this feature is not supported for the interface,
this variable returns 0 and cannot be set.
|
Temp |
Internally measured temperature of transceiver
in tenths of degrees C.
Returns 0 if the feature is not supported.
|
TempAlarm |
Values: normal(1), notSupported(2), lowWarn(3),
highWarn(4), lowAlarm(5), highAlarm(6), notApplicable(7)
Alarm status for internally measured temperature of transceiver.
A Warn value may indicate either an environmental problem
or that some component in the converter
or chassis is degrading and an inspection
is warranted. An Alarm value indicates an
more severe problem that may already be
preventing traffic from flowing.
Values with low indicate that the
temperature is lower than expected, and
values with high indicate that it is higher
than expected. All values represent comparisons
to standard thresholds known to the device.
For information on notSupported vis-a-vis notApplicable, see
discussion under RxPowerAlarm.
|
TxBiasCurrent |
Measured transmit bias current in microamperes.
Returns 0 if the feature is not supported.
|
TxBiasAlarm |
Values: normal(1), notSupported(2), lowWarn(3),
highWarn(4), lowAlarm(5), highAlarm(6), notApplicable(7)
Alarm status for measured transmit bias current for the interface.
A Warn value indicates that some component in the converter
or chassis may be degrading and an inspection
is warranted. An Alarm value indicates an
more severe problem that may already be
preventing traffic from flowing.
Values with low indicate that the
current is lower than expected, and
values with high indicate that it is higher
than expected. All values represent comparisons
to standard thresholds known to the device.
For information on notSupported vis-a-vis notApplicable, see
discussion under RxPowerAlarm.
|
TxPower |
Measured transmit power, in microwatts.
Returns 0 if the feature is not supported.
|
TxPowerAlarm |
Values: normal(1), notSupported(2), lowWarn(3),
highWarn(4), lowAlarm(5), highAlarm(6), notApplicable(7)
Alarm status of measured transmit power.
A Warn value indicates that
some component in the channel may be degrading
and an inspection is warranted. An
Alarm value indicates a more severe problem
that may already be preventing traffic from
flowing. Values with low indicate that the
transmit power is lower than expected, and
values with high indicate that it is higher
than expected. All values represent comparisons
to standard thresholds known to the device.
For information on notSupported vis-a-vis notApplicable, see
discussion under RxPowerAlarm.
|
Ident |
Values: unknownUnspecified(0), gbic(1),
solderedOn(2), sfp(3)
This variable shows the mounting style
of the media connector.
Values are from table 3.2 of Small Form Factor
Committee document draft SFF-8472 Rev 9.5, 'Diagnostic
Monitoring Interface for Optical Xcvrs.' In addition
to the enumerated values, this MIB variable may
return other values such as 0x04-0x7F
which are currently reserved by SFF, and 0x80-0xFF
which are vendor specific values.
|
ConnectorType |
Values: unknownUnspecified(0), sc(1),
fibreChannelStyle1Copper(2),
fibreChannelStyle2Copper(3),
bncTnc(4), fibreChannelCoaxHeader(5),
fiberJack(6), lc(7), mtrj(8), mu(9), sg(10),
opticalPigtail(11), hssdcII(32), copperPigtail(33)
When the Ident variable indicates
that the connector is socketed (rather than being
soldered directly to the board), this variable shows the type
of the connector detected in the socket.
For soldered-on media connectors,
Point-System standard variables such as
ConnA and ConnB
should be used to determine connector types.
Values above are from table 3.4 of Small Form Factor
Committee document draft SFF-8472 Rev 9.5, 'Diagnostic
Monitoring Interface for Optical Xcvrs.' In addition
to the enumerated values, this MIB variable may
return other values such as 0x0C-0x1F and 0x22-0x7F
which are currently reserved by SFF, and 0x80-0xFF
which are vendor specific values.
|
BitRate |
Bit rate of interface, in megabits per second.
Returns 0 if the feature is not supported.
|
LenSupp9125 |
Maximum length in meters of media supported by the transceiver for
9 micron (125 micron jacket) singlemode fiber.
Returns 0 if the length feature is not supported or
this transceiver does not support this type of media.
|
LenSupp50125 |
Maximum length in meters of media supported by the transceiver for
50 micron (125 micron jacket) multimode fiber.
Returns 0 if the length feature is not supported or
this transceiver does not support this type of media.
|
LenSupp625125 |
Maximum length in meters of media supported by the transceiver for
62.5 micron (125 micron jacket) multimode fiber.
Returns 0 if the length feature is not supported or
this transceiver does not support this type of media.
|
LenSuppCopper |
Maximum length in meters of media supported by the transceiver for
copper wire.
Returns 0 if the length feature is not supported or
this transceiver does not support this type of media.
|
Wavelength |
Wavelength of interface's optical transceiver, in nanometers.
Returns 0 if the wavelength reporting feature is not supported or
this interface is not an optical transceiver.
|