This article explains the generation of the syslog message: PECHIP_CMERROR_IRP_SRAMPAR0_FSET_REG_DETECTED_RESTACK and how to resolve it.
This is a Troubleshooting Article for a PFE ASIC Syslog Event mentioned above.
To view other documented syslog events related to XMCHIP, XLCHIP, MQCHIP, LUCHIP, EACHIP, and PECHIP, see KB31893 - Master Index of Articles for Troubleshooting PFE ASIC Syslog Events [juniper.net]
1. FPC Major alarm is seen which is triggered due to a Transient Hardware error on SRAM part of PECHIP
2. When you see the " PECHIP_CMERROR_IRP_SRAMPAR0_FSET_REG_DETECTED_RESTACK" syslog message, the following log messages are also reported along with a chassis major alarm:
Oct 21 04:27:54 device fpc1 fpc1 dcpfe: #012INTR: throttle 3630sec PECHIP[4]:pe.irp.sram_par0.interrupts.status:detected_restack(0): (Count:1) Oct 21 04:27:54 device fpc1 fpc1 dcpfe: Error: /fpc/1/pfe/0/cm/0/PE_Chip/4/PECHIP_CMERROR_IRP_SRAMPAR0_FSET_REG_DETECTED_RESTACK (0x210326), scope: pfe, category: processing, severity: major, module: PE Chip, type: Description for PECHIP_CMERROR_IRP_SRAMPAR0_FSET_REG_DETECTED_RESTACK Oct 21 04:27:54 device fpc1 fpc1 dcpfe: Performing action cmalarm for error /fpc/1/pfe/0/cm/0/PE_Chip/4/PECHIP_CMERROR_IRP_SRAMPAR0_FSET_REG_DETECTED_RESTACK (0x210326) in module: PE Chip with scope: pfe category: processing level: major Oct 21 04:27:54 device fpc1 Error: /fpc/1/pfe/0/cm/0/PE_Chip/4/PECHIP_CMERROR_IRP_SRAMPAR0_FSET_REG_DETECTED_RESTACK (0x210326), scope: pfe, category: processing, severity: major, module: PE Chip, type: Description for PECHIP_CMERROR_IRP_SRAMPAR0_FSET_REG_DETECTED_RESTACK Oct 21 04:27:54 device fpc1 Performing action cmalarm for error /fpc/1/pfe/0/cm/0/PE_Chip/4/PECHIP_CMERROR_IRP_SRAMPAR0_FSET_REG_DETECTED_RESTACK (0x210326) in module: PE Chip with scope: pfe category: processing level: major Oct 21 04:27:54 device fpc1 Cmerror Op Set: PE Chip: PE4[4]: IRP: sram_par0 detected_restack error (URI: /fpc/1/pfe/0/cm/0/PE_Chip/4/PECHIP_CMERROR_IRP_SRAMPAR0_FSET_REG_DETECTED_RESTACK) Oct 21 04:27:54 device alarmd[7390]: Alarm set: FPC id=150995304, color=RED, class=CHASSIS, reason=FPC 1 Major Errors Oct 21 04:27:54 device craftd[7391]: Receive FX craftd set alarm message: color: 1 class: 100 object: 104 slot: 1 silent: 0 short_reason=FPC 1 Major Errors long_reason=FPC 1 Major Errors id=150995304 reason=150994944 Oct 21 04:27:54 device craftd[7391]: Major alarm set, FPC 1 Major Errors Oct 21 04:31:18 device fpc1 Cmerror Op Clear: PE Chip: PE4[4]: IRP: Clear sram_par0 detected_restack error (URI: /fpc/1/pfe/0/cm/0/PE_Chip/4/PECHIP_CMERROR_IRP_SRAMPAR0_FSET_REG_DETECTED_RESTACK) Oct 21 04:31:18 device fpc1 pechip_cmerror_clear_error:3321: Clear cmerror_code = 0x210326 Oct 21 04:31:18 device fpc1 Cmerror Op Clear: PE Chip: PE4[4]: IRP: Clear sram_par0 detected_restack error (URI: /fpc/1/pfe/0/cm/0/PE_Chip/4/PECHIP_CMERROR_IRP_SRAMPAR0_FSET_REG_DETECTED_RESTACK) Oct 21 04:31:18 device fpc1 Performing action clear-cmalarm for error /fpc/1/pfe/0/cm/0/PE_Chip/4/PECHIP_CMERROR_IRP_SRAMPAR0_FSET_REG_DETECTED_RESTACK (0x210326) in module: PE Chip with scope: pfe category: processing level: major Oct 21 04:31:18 device fpc1 Cmerror Op Clear: PE Chip: PE4[4]: IRP: Clear sram_par0 detected_restack error (URI: /fpc/1/pfe/0/cm/0/PE_Chip/4/PECHIP_CMERROR_IRP_SRAMPAR0_FSET_REG_DETECTED_RESTACK) Oct 21 04:31:18 device fpc1 fpc1 dcpfe: Cmerror Op Clear: PE Chip: PE4[4]: IRP: Clear sram_par0 detected_restack error#012 (URI: /fpc/1/pfe/0/cm/0/PE_Chip/4/PECHIP_CMERROR_IRP_SRAMPAR0_FSET_REG_DETECTED_RESTACK) Oct 21 04:31:18 device fpc1 fpc1 dcpfe: pechip_cmerror_clear_error:3321: Clear cmerror_code = 0x210326 Oct 21 04:31:18 device fpc1 fpc1 dcpfe: Cmerror Op Clear: PE Chip: PE4[4]: IRP: Clear sram_par0 detected_restack error#012 (URI: /fpc/1/pfe/0/cm/0/PE_Chip/4/PECHIP_CMERROR_IRP_SRAMPAR0_FSET_REG_DETECTED_RESTACK) Oct 21 04:31:18 device fpc1 fpc1 dcpfe: Performing action clear-cmalarm for error /fpc/1/pfe/0/cm/0/PE_Chip/4/PECHIP_CMERROR_IRP_SRAMPAR0_FSET_REG_DETECTED_RESTACK (0x210326) in module: PE Chip with scope: pfe category: processing level: major Oct 21 04:31:18 device fpc1 fpc1 dcpfe: Cmerror Op Clear: PE Chip: PE4[4]: IRP: Clear sram_par0 detected_restack error#012 (URI: /fpc/1/pfe/0/cm/0/PE_Chip/4/PECHIP_CMERROR_IRP_SRAMPAR0_FSET_REG_DETECTED_RESTACK) Oct 21 04:31:18 device alarmd[7390]: Alarm cleared: FPC id=150995304, color=RED, class=CHASSIS, reason=FPC 1 Major Errors Oct 21 04:31:18 device craftd[7391]: Receive FX craftd clear alarm message: color: Major class: 100 slot: 1 Oct 21 04:31:18 device craftd[7391]: Major alarm cleared, FPC 1 Major Errors
The Error code of 0x210326 on PE chip <X> is related to ingress result processor.To explain further about this error, it occurs when there are SRAM parity errors detected within the recirculation buffer of IRP (Ingress result processor), which we are seeing on PE chip <X> in this case.These errors are usually transient hardware errors and get cleared by its own. We have checked this internally, and this error will not have any service impact and doesn't indicate any software or hardware issue.
This error is transient and clears on its own or with a Hard reboot of the device of the FPC. As NPOA, kindly check if the alarm has cleared on its own and if the alarm has not cleared, restart the FPC to clear the alarm.Perform these steps to determine the cause and resolve the problem (if any). Continue through each step until the problem is resolved.
Collect the show command output:
Capture the output to a file (in case you have to open a technical support case). To do this, configure each SSH client/terminal emulator to log your session.
Analyze the show command output:
In the "show log messages", review the events that occurred at or just before the appearance of the "PECHIP_CMERROR_IRP_SRAMPAR0_FSET_REG_DETECTED_RESTACK" message. Frequently these events help identify the cause
Kindly restart the affected FPC during the maintenance window to clear the alarm.
> request chassis fpc slot X <offline/restart>
[In case you choose to offline FPC card. Check fpc status. It should be offline "show chassis fpc"]
> request chassis fpc slot X online
[Use Online command in case you choose offline option to restart the card.]
Note: The error code 0x210326 may vary in different devices.
If the error still persists, contact JTAC for further assistance.