Description

This article explains the meaning of the following syslog message:

Cmerror Op Set: PE Chip: PE2[2]: IRP: sram_par0 detected_recirc error

Solution

PE2 indicates the ASIC number is 2 in this case. In your case, the error can be seen on a different ASIC of the FPC.

The log message indicates a parity error has been detected in the re-circulation buffer of the ASIC. For ASIC blocks that are parity error protected, in case a parity error is detected, an alarm is raised to initiate corrective actions.

Re-circulation is the process of sending a notification to do another processing of the packet in the input block of the ASIC. Depending on the use case, it can either be the packet needs to be processed by a filter after the look-up, or a case of tunnel termination where decapsulation takes place followed by a second look-up operation.

Typically, these errors clear on their own. A flurry of these messages can be seen in the syslog along with the below message indicating a major error alarm is set for the FPC: 

alarmd[14323]: Alarm set: FPC color=RED, class=CHASSIS, reason=FPC 1 Major Errors - PE Error code: 0x210327

OR

<date/time>  <hostname>: %PFE-3: fpc2 Cmerror Op Set: PE Chip: PE0[0]: IRP: sram_par0 detected_recirc error  (URI: /fpc/2/pfe/0/cm/0/PE_Chip/0/PECHIP_CMERROR_IRP_SRAMPAR0_FSET_REG_DETECTED_RECIRC) 
<date/time>   <hostname> alarmd[8930]: %DAEMON-4: Alarm set: FPC id=150995560, color=RED, class=CHASSIS, reason=FPC 2 Major Errors
<date/time>  <hostname> craftd[8679]: %DAEMON-4: Receive FX craftd set alarm message: color: 1 class: 100 object: 104 slot: 2 silent: 0 short_reason=FPC 2 Major Errors long_reason=FPC 2 Major Errors id=150995560 reason=150994944
<date/time>  <hostname> craftd[8679]: %DAEMON-4:  Major alarm set, FPC 2 Major Errors

If these errors do not clear on their own, restart the line card in a service-affecting maintenance window and monitor the status. If the error occurs again, contact JTAC for assistance.


 

Modification History

Ver 1 - Update the syslog which will help to search this KB.