是不是中毒了，？？？？？？？？？可以去查下 官网上查看下Cat4k Mgmt LoPri这个进程是由什么引起

62.65% 0 Cat4k Mgmt LoPri 这个进程，你可以根据这个去谷歌查找，一般都有解决方案。
show proc cpu | ex 0.00
http://blog.sina.com.cn/s/blog_62f9aae70101069x.html
https://www.baidu.com/baidu?tn=monline_3_dg&ie=utf-8&wd=Cat4k+Mgmt+LoPri+

1.debug platform packet all buffer
2.show platform cpu packet buffered
看看都是哪些流量到了CPU。

CPU utilization for five seconds: 87%/3%; one minute: 89%; five minutes: 90%
15 1745897082100583975 83 19.11% 19.19% 20.28% 0 ARP Input
54 5675266722171792003 261 59.75% 62.09% 62.65% 0 Cat4k Mgmt LoPri
第一行87%/3%表示cpu总体利用率达到了87%，但interrupt percentage只有3%，表明交换机接收的流量不大，在正常范围内。
后面两行表明有可能出现MAC地址在不同端口摆动，查一下是否有应该配置Etherchannel的地方没有配置或者配置得不对。
再检查一下生成树协议，看看各个vlan的生成树root是不是不在你预想的设备上（show spanning-tree root）
使用命令show spanning-tree detail | in ieee|from|occur|is exec查一下是否有某个vlan的topology changes太高
最后回想一下最近网络是否有变动，网络接的设备是否有变动

本帖最后由 supershunge 于 2017-6-21 09:48 编辑

cruiseluo 发表于 2017-6-13 12:44
CPU utilization for five seconds: 87%/3%; one minute: 89%; five minutes: 90%
15 17458970821005839 ...

sh spanning-tree detail | include ieee | from |occur |is exec
VLAN0001 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/12
VLAN0201 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0202 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0203 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0204 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0205 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0206 is executing the ieee compatible Spanning Tree protocol
VLAN0207 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0208 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0209 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0210 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0211 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0213 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0214 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0215 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0401 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0402 is executing the ieee compatible Spanning Tree protocol
from Port-channel1
VLAN0403 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0404 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0405 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0406 is executing the ieee compatible Spanning Tree protocol
VLAN0407 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0408 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0409 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0410 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0411 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0412 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0413 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0414 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0415 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0603 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0800 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/12
VLAN0803 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN0999 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19
VLAN1603 is executing the ieee compatible Spanning Tree protocol
from GigabitEthernet3/19没有发现什么异常 ，很奇怪

supershunge 发表于 2017-6-21 09:45
sh spanning-tree detail | include ieee | from |occur |is exec
VLAN0001 is executing the ieee co ...

sh platform cpu packet statistics
RkiosSysPacketMan:
Packet allocation failures: 0
Packet Buffer(Software Common) allocation failures: 0
Packet Buffer(Software ESMP) allocation failures: 0
Packet Buffer(Software EOBC) allocation failures: 0
Packet Buffer(Software SupToSup) allocation failures: 0
IOS Packet Buffer Wrapper allocation failures: 0
Packets Dropped In Processing Overall
Total 5 sec avg 1 min avg 5 min avg 1 hour avg
-------------------- --------- --------- --------- ----------
1240364 0 0 0 0
Packets Dropped In Processing by CPU event
Event Total 5 sec avg 1 min avg 5 min avg 1 hour avg
----------------- -------------------- --------- --------- --------- ----------
Sa Miss 366685 0 0 0 0
Input Acl Fwd 1 0 0 0 0
Input ACl Copy 873678 0 0 0 0
Packets Dropped In Processing by Priority
Priority Total 5 sec avg 1 min avg 5 min avg 1 hour avg
----------------- -------------------- --------- --------- --------- ----------
Normal 759914 0 0 0 0
Medium 398343 0 0 0 0
High 76894 0 0 0 0
Crucial 5213 0 0 0 0
Packets Dropped In Processing by Reason
Reason Total 5 sec avg 1 min avg 5 min avg 1 hour avg
------------------ -------------------- --------- --------- --------- ----------
STPDrop 41 0 0 0 0
Tx Mode Drop 1240323 0 0 0 0

Total packet queues 64
Packets Received by Packet Queue
Queue Total 5 sec avg 1 min avg 5 min avg 1 hour avg
---------------------- --------------- --------- --------- --------- ----------
Input ACL fwd(snooping) 586332 0 0 0 0
Host Learning 366684 0 0 0 0
L2 Control 208824844 34 21 17 9
Input ACL log, unreach 873646 0 0 0 0
Ttl Expired 12246 0 0 0 0
Adj SameIf Fail 3804 0 0 0 0
L2 router to CPU, 7 27564730392 32097 30675 21635 13358
L3 Glean, 7 12059465 9 4 0 0
L3 Receive, 7 45005975 8 6 3 0
Packets Dropped by Packet Queue
Queue Total 5 sec avg 1 min avg 5 min avg 1 hour avg
---------------------- --------------- --------- --------- --------- ----------
L2 router to CPU, 7 597776026 1057 1175 670 123
L3 Glean, 7 48134 0 0 0 0