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OPERATIONAL DEFECT DATABASE
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- WLC 5520 is in HA state has crashed running in the version 8.10. 151.8 - Reason for rest on the wlc says " reset due to switch-driver crash" - Because of the crash, wlc acting as primary rebooted and all the AP/clients has moved on to secondary WLC - There is no service impact as HA failover is successful
- WLC are in sso mode
- Not applicable
- We see the below from the logs Sys Name: TEST-Monash-WLC2 Model: AIR-CT5520-K9 Version: 8.10.151.8 Primary Boot Image: 8.10.151.8 (default) (active) Backup Boot Image: 8.10.151.0 LastReset Reason: Software Crash Timestamp: Thu Dec 2 17:15:18 2021 SystemUpTime: 188 days 17 hrs 31 mins 45 secs - Here is what we have seen on the crash information Crash file attached to SR. ************************************************************ * Start Cisco Crash Handler * ************************************************************ Sys Name: TEST-Monash-WLC2 Model: AIR-CT5520-K9 Version: 8.10.151.8 Timestamp: Thu Dec 2 17:15:18 2021 SystemUpTime: 188 days 17 hrs 31 mins 45 secs signal: 11 pid: 1881 TID: 1246680832 Task Name: spamApTask0 Reason: System Crash si_signo: 11 si_errno: 0 si_code: 1 si_addr: 0x8 MON(R) Tick: 1629204 2021-12-02 06:14:00.590647 MON(R) ExitTick: 1607920 MON(RW) Tick: 543447 2021-12-02 06:13:46.950655 MON(R) Trigger: 3 MON(R) State: 1 Long time taken timer call back information: Time Stamp: Fri Jun 4 04:50:01 2021 timer cb : 0xa47ef0b5d0('Unknown') Duration : 1000000 usecs, cbCount= 2 Timer Current Time :15990707 secs ------------------------------------------------------------ Analysis of Failure; ------------------------------------------------------------ System Stack 0x8f813c 0x8f9462 0x8f074d /lib64/libpthread.so.0(+0xf170) 0xfb580d 0x127f013 0x2396fe0 0x1e32eb7 /lib64/libpthread.so.0(+0x7dff) /lib64/libc.so.6(+0xe898d) ------------------------------------------------------------ //decode of Traceback// 1. print_backtrace_pbuff + 2d 2. create_crash_dump + 649 3. sigsegv_handler + eec 4. spamDeleteLCBTemp + 3629 5. capwapAcStatemachine + 1363 6. spamApReceiveTask + c4f 7. osapi_task_wrapper + c7 // Traceback of crash // 0x8f813c 0x8f9462 0x8f074d 0xfb580d 0x127f013 0x2396fe0 0x1e32eb7