问题描述
某局点S9700设备CPU利用率过高。详细信息如下:
[huawei]dis cpu-usage
CPU Usage Stat. Cycle: 60 (Second)
CPU Usage : 12% Max: 90%
CPU Usage Stat. Time : 2015-01-01 12:27:45
CPU utilization for five seconds: 12%: one minute: 11%: five minutes: 11%
告警信息
Jan 1 2015 07:05:27 IDC9703-1 %%01VOSCPU/4/CPU_USAGE_HIGH(l)[52]:Slot=3;The CPU is overloaded(CpuUsage=85%, Threshold=80%), and the tasks with top three CPU occupancy are:
bcmL2MOD.0 total : 51%
PPI total : 14%
bcmCNTR.0 total : 5%
#Dec 31 2014 23:57:34 IDC9703-1 L2IFPPI/4/MFLPVLANALARM:OID 1.3.6.1.4.1.2011.5.25.160.3.7 MAC move detected, VlanId = 88, MacAddress = d4ae-52a7-7e7d, Original-Port = GE3/0/31, Flapping port = GE3/0/32. Please check the network accessed to flapping port.
bcmL2MOD.0 total : 51%
PPI total : 14%
bcmCNTR.0 total : 5%
#Dec 31 2014 23:57:34 IDC9703-1 L2IFPPI/4/MFLPVLANALARM:OID 1.3.6.1.4.1.2011.5.25.160.3.7 MAC move detected, VlanId = 88, MacAddress = d4ae-52a7-7e7d, Original-Port = GE3/0/31, Flapping port = GE3/0/32. Please check the network accessed to flapping port.
处理过程
1.查看设备CPU占用过高的进程。发现MSYN 进程异常。
2.查看LOG信息,发现3个问题:
(1)单板CPU利用率过高。
(2)IP地址冲突。
(3)MAC地址漂移。
5.关闭 MAC地址漂移,CPU占用正常故障解除。
解决方案
| 环路导致单板CPU 利用过高 |
建议与总结
设备开启运行STP 等破环协议。