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某局点进行无线业务开局,将2台AC堆叠后,发现主AC每过一段时间就自行重启,重启时现场无人对AC进行操作,具体日志如下:
%Apr 10 11:02:36:031 2019 JSC_AC_WX5560H APMGR/6/APMGR_LOG_DETECTANOMALY: -Slot=1; Rebooted the master AC when the anomaly-triggered timer expired: LIPADDR=8, PhySlot=1, Chassis=0.
%Apr 10 11:02:36:419 2019 JSC_AC_WX5560H APMGR/6/APMGR_LOG_REBOOTCAUSE: -Slot=1; Set Wlan Reboot Cause, SubSlot = 65535, DevRebootCause = 5, WlanRebootCause = 9, ulRet = 0.
%Apr 10 11:02:36:473 2019 JSC_AC_WX5560H DEV/5/BOARD_REBOOT: -Slot=1; Board is rebooting on slot 1.
%Apr 10 11:02:39:850 2019 JSC_AC_WX5560H HA/5/HA_STANDBY_TO_MASTER: Standby board in slot 2 changed to master.
1、查看重启时间点AC日志,无接口UP、DOWN日志;
2、display version查看重启原因为Slave switch soft reboot重启
3、Rebooted the master AC when the anomaly-triggered timer expired: LIPADDR=8, PhySlot=1, Chassis=0.
从日志里可以看到主AC重启原因是心跳超时;与现场沟通反馈目前只是开局测试阶段,只拿了2个AP进行测试,查看诊断确实只有2个测试AP
AP name APID State Model Serial ID
test1 2 R/M WA5320-SI 219801AXXXXXXXXXX
test2 3 I WA5320-SI 219801AXXXXXXXXXX
4、在主AC重启前发现有这2个AP的掉线日志
%Apr 10 10:37:56:579 2019 JSC_AC_WX5560H CWS/4/CWS_AP_DOWN: -Slot=1; CAPWAP tunnel to AP test1 went down. Reason: Neighbor dead timer expired.
%Apr 10 10:52:36:027 2019 JSC_AC_WX5560H CWS/4/CWS_AP_DOWN: -Slot=1; CAPWAP tunnel to AP test2 went down. Reason: Neighbor dead timer expired.
5、至此原因找到,由于现场测试只有两台AP,然后AP由于邻居超时都发生了掉线,触发了计时器,即此时没有在线AP ,会认为主AC异常,所以就自行重启了,这是IRF AC的保护机制。
这个不属于故障,是正常的现象。主要触发原因为:所有AP掉线,并且一段时间之内一直没有在线AP,此时会认为主AC故障,自动重启,这是IRF的保护机制。
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