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ModTempLowTh

 

Table 1: Alarm Details

Parameter

Description

Code

modTempLowTh

Description

Module Temperature Below Low Threshold: The temperature of the MSA transceiver is below low-temperature threshold. For information, see Temperature thresholds - MSA transceivers.

Entities Affected

OTN OTU interfaces (see respective table below).

Possible Cause

The ambient temperature is lower than the normal operating range of the chassis.

Default Severity

Major

Service Affecting

No (false).

Alarm Clearing

See Clearing a ModTempLowTh alarm.

Related Fault Hierarchy

See Common fault hierarchy - OTN and CBR ports.

Table 2: OTN OTU Interfaces

Entity Name

 

Fault Indicator

Module

Indicator

Status

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

UFM4

Fault LED, 100G line port

On

Clearing a ModTempLowTh Alarm

Note

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

  1. Optionally retrieve statistics for the OTU4 interface to view the value of the Module temperature parameter:
    show statistics current otu4:identifier
  2. Retrieve environment information to view data on equipment temperature, and ensure that the ambient temperature is within the specified range for chassis operation. For information, see the BTI7800 Series Hardware Overview and Installation Guide.
    show environment
  3. Check for alarms on the interface.
    • If the alarm has cleared, you have completed this procedure.

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