Description

We are experiencing a CB power failure and some major alerts.

Symptoms

2026-04-19 06:29:51 IST Major CB 1 Power Failure

2026-04-19 06:30:20 IST Minor CB 1 Temp Sensor Fail

2026-04-19 06:30:31 IST Minor CB 1 Volt Sensor Fail

2026-04-19 06:30:10 IST Minor CB 1 Power Sensor Fail

 

Apr 19 06:29:51 Router kernel: jnx-connector cb1: active:powerbad_ev

Apr 19 06:29:51 Router kernel: jnx-connector cb1: poweroff-on-error disabled, not powering off

Apr 19 06:29:51 Router kernel: jnx-connector cb1: active:powerbad_ev -> failed:powerbad_ev

Apr 19 06:29:51 Router hwdre[15422]: fru_state_transition /Chassis[0]/Cb[1] ONLINE -> FAULT

Apr 19 06:29:51 Router hwdre[15422]: PerformEmfActions: Alarm(Location: /Chassis[0]/Cb[1] Cmpnt: mbus Module: mbus Error: fru_power_failure) reported

|

Apr 19 06:29:51 Router emfd-fpa[15228]: EMF_FPA_ALARM_REP: RaiseAlarm: Alarm(Location: /Chassis[0]/Re[0] Module: platform Object: eth3 Error: 6) reported

Apr 19 06:29:51 Router plat-mra[18133]: EMF_EVO_ALARM_SET: Alarm set: CB color=red, class=CHASSIS, reason=CB 1 Power Failure

Solution

This alarm can be raised either due to transient HW fault or a genuine HW failure.

 

Take the following steps to bring the CB up:

  1. Reboot CB and check if the alarm clears.
  2. In case alarm is still present, proceed with physically re-seating the faulty CB.
  3. In case issue still persists even after re-seat, this might indicate a HW fault, so contact JTAC for further assistance.

Modification History

2026-05-06 : Article Created