Description

We have identified an issue with the FTC Outlet Temperature Sensors on the new ACX7348.

This is showing zero instead of correct value.

Symptoms

root@Router> show chassis environment no-forwarding

Class Item             Status  Measurement

<snip>

   FTC 0 Outlet Temp Sensor 0  OK    0 degrees C / 32 degrees F

   FTC 0 Outlet Temp Sensor 1  OK    0 degrees C / 32 degrees F

<snip>

Fan Fan Tray 0 Fan 1       OK    7150 RPM

   Fan Tray 0 Fan 2       OK    6875 RPM

   Fan Tray 1 Fan 1       OK    6875 RPM

   Fan Tray 1 Fan 2       OK    7150 RPM

   Fan Tray 2 Fan 1       OK    6875 RPM

   Fan Tray 2 Fan 2       OK    7150 RPM

   Fan Tray 3 Fan 1       OK    6875 RPM

   Fan Tray 3 Fan 2       OK    6875 RPM

Solution

This is an unexpected behaviour & is an issue with the FTC sensors.

We can see there are no issues with other components temperature or the FAN speeds.

 

From Lab:

labroot@opulent-re0> show chassis environment | match FTC  

   FTC 0 Outlet Temp Sensor 0  OK    30 degrees C / 86 degrees F

   FTC 0 Outlet Temp Sensor 1  OK    29 degrees C / 84 degrees F

 

Since FTC is built in chassis for the platform, we need to replace the chassis.

RMA was created for the chassis.

Modification History

2026-02-11 : Article Created