User's Manual

Table Of Contents
Users Manual of SGS-5240 Series Managed Switch
48
4.2.2.3 Transceiver
Switch Management>Interface>Transceiver page is used to configure thresholds for alarm and warning messages for optical
transceivers which support Digital Diagnostic Monitoring (DDM). This page also displays identifying information for supported
transceiver types, and operational parameters for transceivers which support DDM.
Port Port number.
GeneralInformation on connector type and vendor-related parameters.
DDM InformationInformation on temperature, supply voltage, laser bias current, laser power, and received optical
power.
The switch can display diagnostic information for SFP modules which support the SFF-8472 Specification for Diagnostic
Monitoring Interface for Optical Transceivers. This information allows administrators to remotely diagnose problems with
optical devices. This feature, referred to as Digital Diagnostic Monitoring (DDM) provides information on transceiver
parameters.
TrapSends a trap when any of the transceiver’s operation values falls outside of specified thresholds. (Default:
Disabled)
Auto ModeUses default threshold settings obtained from the transceiver to determine when an alarm or trap message
should be sent. (Default: Enabled)
DDM ThresholdsInformation on alarm and warning thresholds. The switch can be configured to send a trap when the
measured parameter falls outside of the specified thresholds.
The following alarm and warning parameters are supported:
High AlarmSends an alarm message when the high threshold is crossed.
High Warning Sends a warning message when the high threshold is crossed.
Low WarningSends a warning message when the low threshold is crossed.
Low AlarmSends an alarm message when the low threshold is crossed. The configurable ranges are:
Temperature: -128.00-128.00 °C
Voltage: 0.00-6.55 Volts
Current: 0.00-131.00 mA
Power: -40.00-8.20 dBm
The threshold value for Rx and Tx power is calculated as the power ratio in decibels (dB) of the measured power
referenced to one milliwatt (mW). Threshold values for alarm and warning messages can be configured as described
below.