Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

 

TransmitterDegrade

 

Table 1: Alarm Details

Parameter

Description

Code

transmitterDegrade

Description

Transmitter degrade (of the far-end transmitter). This alarm is raised by the local receiver when the Delta-Q factor difference between X and Y polarization states of the signal received from the far-end transmitter has reached the configured Delta-Q threshold.

The alarm clears when the Delta-Q factor difference is below the configured Delta-Q threshold for three consecutive one-second intervals.

Entities Affected

Optical channel and OTU4 interfaces (see respective tables below).

Possible Cause

The transmitting transceiver or link is degraded.

Default Severity

Major

Service Affecting

No (false)

Alarm Clearing

See Clearing a TransmitterDegrade Alarm.

Related Fault Hierarchy

See Common fault hierarchy - OTN and CBR ports.

Table 2: Optical Channel Interfaces

Entity Name

 

Fault Indicator

Module

Indicator

Status

och:<chassis>/<slot>/<2>/<1>/<subport.och>

UFM6

Fault LED, 200G line port

On

Table 3: OTU4 Interfaces

Entity Name

 

Fault Indicator

Module

Indicator

Status

otu4:<chassis>/<slot>/<subslot>/<port>

1x CFP BIC

Fault LED, 100G port

On

Clearing a TransmitterDegrade Alarm

Note

Follow all applicable safety requirements as described in the BTI7800 Series Hardware Overview and Installation Guide.

  1. Do the following:
    • Retrieve statistics for the interface to view the counters that relate to Delta-Q across all bins.

      show statistics current name:identifier

      For example:

    • Retrieve information from the running configuration to view the configured Delta-Q threshold for the interface.

      show running-config interface name:identifier

      For example:

  2. Do one of the following:
    • If the actual Delta-Q has reached or exceeded the configured threshold, go to the next step.

    • If the actual Delta-Q has not reached the configured threshold, contact your next level of support.

  3. Check the transmitter at the far-end for any alarms, and resolve those alarms if applicable.
    • If the alarm clears, you have completed this procedure.

    • If the alarm does not clear, go to the next step.

  4. Analyze the optical link and clean the optical connectors, and resolve any other problems that could be affecting the x- and y-polarization FEC bit error ratios.
    • If the alarm clears, you have completed this procedure.

    • If the alarm does not clear, contact your next level of support.