Description

This article details meaning of the error logs observed and the steps to perform when you encounter them.

 

Symptoms

Below alarms and logs would be reported on the FPC:

root@device> show chassis alarms no-forwarding

1 alarms currently active

Alarm time              Class Description

2024-03-20 01:28:29 UTC Major FPC 3 Major Errors - Error code: 13

 

Logs:

Mar 20 01:07:36 device : %PFE-3: fpc3 SLCHIP(0): 1 new errors (parity error) in DESRD last stream 0 last lout_key 0x12bbb4

Mar 20 01:07:36 device : %PFE-3: fpc3 CMALARM: Error (code: 3, type:Major) encountered, cmalarm_passive_alarm_signal

Mar 20 01:07:37 device : %PFE-3: fpc3 CMALARM: Error (code: 13, type:Major) encountered, cmalarm_passive_alarm_signal

Mar 20 01:07:37 device : %PFE-0: fpc3 SLCHIP(0): SLout SRAM bank 0 error type 5 nibble 0 @ 0x441 (1)

Mar 20 01:07:56 device : %PFE-3: fpc3 SLCHIP(0): 15 new errors (parity error) in DESRD last stream 0 last lout_key 0x12bbb4

Mar 20 01:07:56 device : %PFE-3: fpc3 CMALARM: Error (code: 3, type:Major) encountered, cmalarm_passive_alarm_signal

Mar 20 01:07:56 device : %PFE-3: fpc3 CMALARM: Error (code: 13, type:Major) encountered, cmalarm_passive_alarm_signal

Mar 20 01:07:56 device alarmd[1625]: %DAEMON-4: Alarm set: FPC color=RED, class=CHASSIS, reason=FPC 3 Major Errors - Error code: 13

Mar 20 01:07:56 device craftd[1626]: %DAEMON-4: Major alarm set, FPC 3 Major Errors - Error code: 13

Mar 20 01:07:56 device : %PFE-0: fpc3 SLCHIP(0): SLout SRAM bank 0 error type 5 nibble 0 @ 0x441 (15)

Mar 20 01:07:59 device : %PFE-3: fpc3 SLCHIP(0): 7 new errors (parity error) in DESRD last stream 0 last lout_key 0x12bbb4

Mar 20 01:07:59 device : %PFE-3: fpc3 CMALARM: Error (code: 3, type:Major) encountered, cmalarm_passive_alarm_signal

Mar 20 01:07:59 device : %PFE-3: fpc3 CMALARM: Error (code: 13, type:Major) encountered, cmalarm_passive_alarm_signal

Mar 20 01:07:59 device : %PFE-0: fpc3 SLCHIP(0): SLout SRAM bank 0 error type 5 nibble 0 @ 0x441 (7)

Mar 20 01:08:00 device : %PFE-3: fpc3 SL Chip:SLCHIP(0) SLout parity errors in DESRD

Mar 20 01:08:00 device : %PFE-3: fpc3 SL Chip:SLCHIP(0) SLout Parity errors in HDRF

Mar 20 01:08:00 device : %PFE-3: fpc3 SL Chip:SLCHIP(0): Stream(0) SLout OP L23 errored packets

Solution

The logs "SLout parity errors in DESRD" and "SLout parity errors in HDRF" indicate that there are parity errors occurring in the SLout (Switching Logic output) module of the DESRD (Data Engine Switching and Routing Device) and HDRF (High-Density Routing and Forwarding) module. Parity errors occur when there is a mismatch or inconsistency in the parity bit, which is used for error detection in data transmission. 

 

The parity error usually indicates a transient hardware issue. The alarms are usually cleared on its own. If the alarms are present, please restart the affected FPC in maintenance window to clear the alarm.

Modification History

2024-03-20 : Article Created