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DGS-3700 Series Layer 2 Managed Gigabit Ethernet Switch CLI Reference Guide
DDM C
OMMANDS
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The Digital Diagnostic Monitoring (DDM) module allows real time access to the SFP module operating
parameters. The DDM commands allow users to set warning and alarm thresholds on the operating
parameters. Once any of the operating parameters rise above the high threshold or fall below the low
threshold, the abnormal or dangerous conditions will be logged or processed accordingly to user's
configuration.
The following monitoring operating parameters can be accessed.
• Internally measure the transceiver temperature in degree Celsius.
• Internally measure the transceiver supply voltage in volts.
• Measures Tx bias current in mA.
• Measures Tx output power in mW.
• Measures Rx received optical power in mW.
The DDM (Digital Diagnostic Monitoring) commands in the Command Line Interface (CLI) are listed
(along with the appropriate parameters) in the following table.
C
P
OMMAND
config ddm log
config ddm trap
config ddm ports
show ddm
show ddm ports
Each command is listed, in detail, in the following sections.
config ddm log
Purpose
Syntax
Description
Parameters
Restrictions
Example usage:
To configure the DDM log state to enable:
ARAMETERS
[enable | disable]
[enable | disable]
[ | all] [[temperature_threshold | voltage_threshold | bias_current_threshold
| tx_power_threshold | rx_power_threshold] {high_alarm | low_alarm
disable] | shutdown [alarm | warning | none]} (1)]
{} [status | configuration]
To enable or disable log action when the SFP exceed its DDM threshold.
config ddm log [enable | disable]
This command is used to configure the DDM log action when encountering an
exceeding alarm or warning threshold event.
log - Specify whether or not to send a log when the operating parameter exceeds the
corresponding threshold.
enable - Enable the parameter selected.
disable - Disable the parameter selected.
Only Administrator and Operator-level users can issue this command.
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