This KB article explains the FPC and SIB error logs after dcpfe core crash.
Syslog messages:
Jul 24 06:34:21 QFX alarmd[8412]: Alarm set: SIB color=YELLOW, class=CHASSIS, reason=SIB 0 FPC Link Error
Jul 24 06:34:21 QFX craftd[8414]: Receive FX craftd set alarm message: color: 2 class: 100 object: 116 slot: 0 silent: 0 short_reason=SIB 0 FPC Links long_reason=SIB 0 FPC Link Error id=201326708 reason=201326592
Jul 24 06:34:21 QFX craftd[8414]: Minor alarm set, SIB 0 FPC Link Error
Jul 24 06:34:21 QFX chassisd[7668]: CHASSISD_FRU_TO_SNMP_INDEX_ERROR: snmp_fru_to_bidx: fru_name:SIB: fru_type:8
Jul 24 06:34:21 QFX chassisd[7668]: CHASSISD_IPC_FLUSH_ERROR: ch_flush_fru_pipe: flush operation failed for FPC 0
Jul 24 06:34:21 QFX alarmd[8412]: Alarm set: FPC color=YELLOW, class=CHASSIS, reason=FPC 0 SIB Link Error
Jul 24 06:34:21 QFX craftd[8414]: Receive FX craftd set alarm message: color: 2 class: 100 object: 104 slot: 0 silent: 0 short_reason=FPC 0 detects link long_reason=FPC 0 SIB Link Error id=369098856 reason=369098752
Jul 24 06:34:21 QFX craftd[8414]: Minor alarm set, FPC 0 SIB Link Error
Jul 24 06:34:21 QFX chassisd[7668]: CHASSISD_SNMP_TRAP7: SNMP trap generated: Link Error (jnxFruContentsIndex 7, jnxFruL1Index 1, jnxFruL2Index 0, jnxFruL3Index 0, jnxFruName FPC: QFX10002-36Q @ 0/*/*, jnxFruType 3, jnxFruSlot 0)
Jul 24 06:34:21 QFX chassisd[7668]: CHASSISD_IPC_CONNECTION_DROPPED: Dropped IPC connection for FPC 0
Jul 24 06:34:21 QFX chassisd[7668]: CHASSISD_IFDEV_DETACH_FPC: ifdev_detach_fpc(0)
root@QFX> show system core-dumps no-forwarding
Host Crash Info:
--------------------------------------------------------------------------
-rw-r--r-- 1 root root 181307222 Jul 24 06:30 /var/tmp/corefiles/Router-node.dcpfe.7687.1721802612.core.tgz
Collect the following outputs to investigate the issue:
show chassis alarm
show system core-dumps
show chassis sibs
show chassis sibs detail
show chassis fpc errors
show chassis fabric errors fpc <x>
show chassis fabric summary
show chassis fabric topology
show chassis fabric sibs
show chassis fabric errors
show chassis fabric errors sib <x>
show chassis fabric errors autoheal
show chassis fabric degraded-fabric-reachability
show chassis fabric plane-location
show chassis fabric reachability detail
Decode the dcpfe core and check the issue if it is related to FPC or SIB PFE then follow the log messages to narrow down further.
If the issue points to the FPC, then please schedule a safe window to restart/reseat the affected FPC.
request chassis fpc slot <x> offline
request chassis fpc slot <x> online
Or request chassis fpc slot <x> restart
If restart/reseat of FPC did not resolve the issue we may attempt to offline/ online the associated SIB by waiting 5-10 mins between offline and online action.
request chassis sib slot <x> offline
request chassis sib slot <x> online
If the error related to the SIB/FPC persists even after restart, then please contact Support as the issue could be related to hardware and further investigation may be needed.
2024-08-13 : Initial Publication