Configure DDM

Configure Digital Diagnostic Monitoring to get information concerning the status of the transmitted and received signals to allow better fault isolation and error detection.

About this task

When you enable DDM, you see the internal performance condition (temperature, voltage, bias, Tx power and Rx power) of the pluggable transceiver. The default is disabled.

For information about how to reset a transceiver for troubleshooting purposes, see Reset a QSFP+ or QSFP28 Transceiver.

Procedure

Enter Global Configuration mode:

enable

configure terminal
Optional: Configure an alarm to occur if the port goes down:

pluggable-optical-module ddm-alarm-portdown
Optional: Configure the DDM interval:

pluggable-optical-module ddm-monitor-interval <5-60>
Optional: Enable the sending of trap messages when an alarm occurs:

pluggable-optical-module ddm-traps-send
Enable DDM:

pluggable-optical-module ddm-monitor

Example

Configure the interval to 10 seconds and enable DDM.

Switch:1>enable
Switch:1#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Switch:1(config)#pluggable-optical-module ddm-monitor-interval 10
Switch:1(config)#pluggable-optical-module ddm-monitor

Variable Definitions

Use the data in the following table to use the pluggable-optical-module command


Variable	Value
ddm-alarm-portdown	When enabled, the port goes down when any alarm occurs. The default is disabled.
ddm-monitor	Enables DDM. When enabled, you see the internal performance condition (temperature, voltage, bias, Tx power and Rx power) of the pluggable transceiver. The default is disabled.
ddm-monitor-interval <5-60>	Configures the DDM monitor interval. If an alarm occurs, the log message is received within the specific interval. The default value is 5 seconds.
ddm-traps-send	Enables or disables the sending of trap messages. When enabled, the trap message is sent to the device manager any time the alarm occurs. The default is enabled.