FPC line card may remain offline with a hardware error message when checking its status. This issue prevents the FPC from powering up successfully, and manual reboot attempts may not resolve the problem, leaving the line card in a down state.

1) The show chassis fpc command indicates that the FPC is offline due to a hardware error:

> show chassis fpc

Temp CPU Utilization (%) CPU Utilization (%) Memory Utilization (%)

Slot State (C) Total Interrupt 1min 5min 15min DRAM (MB) Heap Buffer

0 Offline ---Hardware error---

1 Online 54 30 5 38 41 43 3168 28 27

2) The following log messages may appear, indicating multiple failed attempts to power the FPC on and off:

FPC 0 offlined for reason Hardware error, not powering up

FPC 0 offlined for reason Hardware error, not powering up

FPC 0 offlined for reason Hardware error, not powering up

lcmd[4928]: summit_fpc_power_cmd:816: FPC0: Power off failed

lcmd[4928]: summit_fpc_power_cmd:804: FPC0: Power on failed

As per the log messages, FPC remained down due to hardware errors. FPC reboot may not change the condition, and line card will remain in down state.

If the issue persists despite restarting the line card then please reach out to the Juniper Technical Support Center, as the hardware error indicates a potential hardware fault that requires further investigation.