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蓝森林 http://www.lslnet.com 2006年7月26日 13:28

一个真实的案例---270台电脑的网吧---经常死机


Router#sh proce cpu
CPU utilization for five seconds: 99%/83%; one minute: 98%; five minutes: 98%733a ARPA FastEthernet3/0
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process4e10.dba4 ARPA

2 700 2081 336 0.08% 0.00% 0.00% 0 Load Meter/0

3 19484 532 36624 0.08% 0.65% 0.54% 130 Virtual Execet3/0

4 11916 1250 9532 0.00% 0.04% 0.02% 0 Check heapsrnet3/0

5 608 97 6268 0.00% 0.00% 0.00% 0 Pool Managerhernet3/0

6 0 2 0 0.00% 0.00% 0.00% 0 Timers FastEthernet3/0

7 0 2 0 0.00% 0.00% 0.00% 0 S.4d31.03c6

8 0 1 0 0.00% 0.00% 0.00% 0 AAA high-capacit
Intern

9 0 1 0 0.00% 0.00% 0.00% 0 OIR Handler
Int

10 52 350 148 0.00% 0.00% 0.00% 0 Environmental mo
Internet

11 49108 9123 5382 0.00% 0.13% 0.14% 0 ARP Input
Int

12 324 523 619 0.00% 0.00% 0.00% 0 HC Counter Timer
Internet

13 0 2 0 0.00% 0.00% 0.00% 0 DDR Timers
Inter

14 8 2 4000 0.00% 0.00

16 948 10060 94 0.00% 0.00% 0.00% 0 GraphIt

17 0 2 0 0.00% 0.00% 0.00% 0 Dialer eventnet3/0
1

18 0 1 0 0.00% 0.00% 0.00% 0 Critical Bkgndet3/0

2

19 4388 3207 1368 0.08% 0.01% 0.00% 0 Net Background/0

3 516

20 4 11 363 0.00% 0.00% 0.00% 0 Loggerrnet3/0

4

21 1632 10056 162 0.00% 0.00% 0.00% Addr

26 7044 201 35044 0.00% 0.00% 0.00% 0 Per-minute Jobshernet3/0o

27 16 355 45 0.00% 0.00% 0.0bb 13%

29 0 1 0 0.00% 0.00% 0.00% 0 AAA ACCT Proct3/0imers

30 0 1 0 0.00% 0.00% 0.00% 0 ACCT Periodic Pr API
In

31 0 2 0 0.00% 0.00% 0.00% 0 AAA Dictionary Rt
Internet

32 2686236 371278 7235 7.45% 10.92% 10.03% 0 IP Input



33 0 1 0 0.00% 0.00% 0.00% 0 ICMP event handl


Interne

34 1908 1357 1406 0.00% 0.0
37 0 2 0 0.00% 0.00% 0.00% 0 PPP IP Route

PID

38 0 2 0 0.00% 0.00% 0.00% 0 PPP IPCPet3/0
22

39 1188 383 3101 0.00% 0.00% 0.00% 0 IP Backgroundhernet3/0

2

40 100 183 546 0.00% 0.00% 0.00% 0 IP RIB Updateernet3/0

24

41 916 182 5032 0.00% 0.00% 0.0022
44 748 863 866 0.00% 0.00% 0.00% 0 TCP Timer10.00% 0.00% 0 AAA Server

45 48 12 4000 0.00% 0.00% 0.00% 0 TCP Protocolst2/1 0.00% 0 AAA ACCT Proc

46 0 1 0 0.00% 0.00% 0.00% 0 RARP Inputnet3/0% 0.00% 0 ACCT Periodic Pr

47 0 1 0 0.00% 0.00% 0.00% 0 RPA 0 0.00
33


49 11136 176 63272 0.00% 0.06% 0.01% 0 IP Cache Ager


I

50 0 1 0 0.00% 0.00% 0.00% 0 COPSnet3/0

51 4 2 2000 0.00% 0.00% 0.00% 0 PPP BindA FastEthernet3/0

52 0 1 0 0.00% 0.00% 0.00% 0 PAD InCall82 ARPA FastEthernet3/0

53 0 2 0 0.00% 0.00% 0.00% 0 X.25 Backgroundc2

57 0 2 0 0.00% 0.00% 0.00% 0 LINE AAA

58 0 2 0 0.00% 0.00% 0.00% 0 TPLUS

59 1216 140 8685 0.57% 0.14% 0.04% 131 Virtual Exec

60 0 2 0 0.00% 0.00% 0.00% 0 AAA SEND STOP EV

61 0 1 0 0.00% 0.00% 0.00% 0 Syslog Traps

62 24 177 135 0.00% 0.00% 0.00% 0 SAA Event Proces

63 36916 15749 2344 0.16% 0.18% 0.13% 0 CEF process

64 188712 207011 911 0.65% 0.82% 0.82% 0 IP NAT Ager

65 108 365 295 0.00% 0.00% 0.00% 0 CEF Scanner

PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
66 20 89 224 0.00% 0.00% 0.00% 0 DHCPD Timer

67 248 2960 83 0.00% 0.00% 0.00% 0 DHCPD Database
Router#

enable secret 5 $1$rBKA$b9YLl0Ek3WkLBGqzPcU7Q068.1.178 9 000c.f19a.596f ARPA
!s
ip subnet-zeroA
ip cef
!
!
!
!
!
!
!
interface FastEthernet2/0Internet 192.168.1.181
ip address 192.168.2.1 255.255.255.0stEthernet3/0
ip nat inside
duplex auto

5
I
speed auto.168.1.180
!
interface FastEthernet2/1 ARPA FastEthernet3/0
ip address 192.168.3.1 255.255.255.0

58

ip nat inside68.1.182
duplex auto.f19a.5fb6
speed auto
!
Internet 192.168.1.139
ip nat outside6c9 ARPA Fas
duplex autont Proces
ip nat translation timeout 30
ip nat translation tcp-timeout 300
ip nat translation port-timeout udp 137 60
ip nat translation port-timeout tcp 80 180
ip nat translation port-timeout tcp 6667 180
ip nat pool lsc 218.90.165.65 218.90.165.67 netmask 255.255.255.248
ip nat inside source list 1 pool lsc overload
ip classless
ip route 0.0.0.0 0.0.0.0 218.90.165.70
no ip http server
!
!
access-list 1 permit 192.168.0.0 0.0.255.255
!
line con 0
line aux 0
line vty 0 4
password lsc
login
!
!
end

Router#

路由器的CPU太高了,快到100了,

如何把CPU降下来呀?

谢谢大家的帮忙.

Router#sh ip arp
!
version 12.2tocol Addre
ser
Internet 192.168.1.127 6 000c.f186.7acd ARPA FastEthernet3/0vice timestamps log datetime msec
Internet 192.168.1.105
no ser
Internet 192.168.3.125 0 Incomplete ARPAostname Router
!
enable secret 5 $1$rBKA$b
Internet 192.168.3.124 0 Incomplete ARPAARPA F
!t
ip subnet-zero
ip cef
!
!
Internet 192.168.1.126 1 000c.f186.7ac0 ARPA FastEthernet3/0ss 192.168.2.1 255.255.255.0tEthernet3/0
ip nat in
Internet 192.168.1.113 4 0007.e93c.b77c ARPA FastEthernet3/0ce FastEthernet2/1ARPA FastEthernet3/0
ip address 192.168.3.1 255.255.
Internet 192.168.1.112 1 0007.e93c.b3b1 ARPA FastEthernet3/0ex auto4e10.f5f1 A
speed autohe
!
interface FastEthernet3/0
Internet 192.168.1.92 9 000c.f19a.5ff5 ARPA FastEthernet3/0outer#
Router#
Router#
Router#
Router#
Ro
Internet 192.168.1.95 1 000c.f19a.5fd6 ARPA FastEthernet3/0n commands, one per line. End with CNTL/Z.
Internet 192.168.1.94 36 000c.f19a.594d ARPA FastEthernet3/0r(config)#no access-list
Router(config)#no acce
Internet 192.168.1.81 22 000c.f1a0.cecf ARPA FastEthernet3/0
Router#sh run
Building configuration...
Internet 192.168.1.80 0 0011.1114.f6c9 ARPA FastEthernet3/0
!
version 12.2
service timestamps debug datetime msec
Internet 192.168.1.83 31 000c.f1a0.add9 ARPA FastEthernet3/0
no service password-encryption
Internet 192.168.1.82 16 000c.6e45.0ea2 e secret 5 $1$rBKA$b9YLl
ip nat inside source list 1 pool lsc overload
Internet 192.168.1.46 0 000c.f19a.7569 ARPA FastEthernet3/00.0 0.0.0.0 218.90.165.70
no ip http s
Internet 192.168.1.33 6 000c.f19a.5979 ARPA FastEthernet3/0tEthernet3/0
!
line con 0
line aux 0
Internet 192.168.1.32 0 000c.f1a0.adbf ARPA FastEthernet3/0
!f
end

Router#wr
Building configuration...
Internet 192.168.1.35 3 000c.f19a.7391 ARPA
8
Internet 192.168.1.60 3 000c.f19a.60b0 ARPA FastEthernet3/0
Internet 192.168.1.63 9 000c.f1a0.c6d3 ARPA FastEthernet3/0


Internet 192.168.1.49 5 000c.f19a.7579 ARPA FastEthernet3/0mo
Internet 192.168.1.48 1 000c.f1a0.c77a ARPA FastEthernet3/0ut


Internet 192.168.1.51 1 000c.7690.1c05

21
Internet 192.168.1.15 28 00e0.4e10.f2a5 ARPA FastEthernet3/0
I


Router#
Internet 218.90.165.67 - 0030.94cb.cb52 ARPA FastEthernet3/1
IOS (tm) 3600 Software (C3640-I-M), Version
Internet 192.168.1.14 28 00e0.4c7a.a11a ARPA FastEthernet3/0
TAC Support: http://www.cisco.com/tac1
Internet 218.90.165.66 - 0030.94cb.cb52 ARPA FastEthernet3/1, Inc.
Compiled Fri 03-Jan-03
Internet 192.168.1.1 - 0030.94cb.cb51 ARPA FastEthernet3/0, data-base: 0x60C1A000
Internet

R
Internet 192.168.3.1 - 0030.94cb.cb42
Internet 192.168.1.30 3 000c.f19a.57af ARPA FastEthernet3/0outer#^@
Router#^@
Router#sh proc cppu^@ ^
Internet 192.168.1.17 2 00e0.4e11.01ee ARPA FastEthernet3/0r.

Router#^@
Router#^@
Internet 192.168.1.19 2 000c.f1a7.6db7 ARPA FastEthernet3/0
% Invalid input detected at '^' marker.
Internet 192.168.1.18 0 000c.f1a0.cf13 ARPA FastEthernet3/0 ^
% Invalid input detected
Protocol Address Age (min) Hardware Addr
Router#^@
Router#^@

Internet 192.168.1.238 6 00e0.4e10.e694 ARPA FastEthernet3/0
Internet 192.168.1.225 4 00e0.4e10.fe51 ARPA FastEthernet3/0


Internet 192.168.1.224 26 00e0.4d31.03c6 ARPA FastEthernet3/0mo
Internet 192.168.1.227 1 00e0.4d31.054b ARPA FastEthernet3/0ut


Internet 192.168.1.226 8 00e0.4e10.f13c

21
Protocol Address Age (min) Hardware Addr Type Interfacenet3/0
Internet 192.168.1.240 8 00e0.4e10.fb0f ARPA FastEthernet3/0etected at '^' marker.

Router#h ver^
Internet 192.168.1.243 4 00e0.4e10.e87d ARPA FastEthernet3/0 marker.t3/0

Router#^@
Router#^
Internet 192.168.1.242 6 00e0.4e11.01b6 ARPA FastEthernet3/0#rface
Router#sh proce cpu
CPU utilization for five sec
Internet 192.168.1.245 100 00e0.4d31.0413 ARPA FastEthernet3/0
PID Runtime(ms) Invoked
Internet 192.168.1.247 10 00e0.4d31.0398 ARPA

Internet 192.168.1.197 4 000c.f19a.755e ARPA FastEthernet3/0er Timer
Internet 192.168.1.217 130 00e0.4d31.0499 ARPA FastEthernet3/0DR Timers
Internet 192.168.1.219 6 00e0.4e10.fca7 0.00
Internet 192.168.1.218 6 00e0.4e10.fad0 ARPA FastEthernet3/0ectn
Password:
Router#sh proce cpu
CPU
Internet 192.168.1.221 7 00e0.4d31.0421 ARPA FastEthernet3/0

17
Internet 192.168.1.220 4 00e0.4e10.fe1e ARPA FastEthernet3/0
1

18
Protocol Address Age (min) Hardware Addr Type Interfacedet3/0


Internet 192.168.1.223 17 00e0.4e10.ff7b ARPA FastEthernet3/0Background/0

3
Internet 192.168.1.222 4 00e0.4e10.fb22 ARPA FastEthernet3/0oggerrnet3/0

4


Internet 192.168.1.211 0 000c.f1a0.ad47 ARPA Addr
36
Internet 192.168.1.165 3 000c.f19a.7473 ARPA FastEthernet3/0

21
Internet 192.168.1.164 0 000c.f1a0.3fbc ARPA FastEthernet3/0

PID

Internet 192.168.1.167 9 000c.f1a0.b00f ARPA FastEthernet3/0
22

39
Internet 192.168.1.166 1 000c.f1a0.c6a9 ARPA FastEthernet3/0

2

40
Protocol Address Age (min) Hardware Addr Type Interfacenet3/0

24
Internet 192.168.1.185 1 000c.f19a.5856 ARPA .0022
56
Internet 192.168.1.136 4 0007.e93c.b6a2 ARPA FastEthernet3/0te

57
Internet 192.168.1.139 4 000c.f1a0.c6c9 ARPA FastEthernet3/0r

58 0
Internet 192.168.3.137 4 000c.f186.7abb ARPA FastEthernet2/1

59 1216 140 8
Internet 192.168.3.136 0 Incomplete ARPA FastEthernet3/0s

Internet 192.168.1.138 8 000c.f19a.753e ARPA FastEthernet3/0 EVf1a0.b00f ARPA FastEthernet3/0
Internet 192.168.1.141 143 000c.f1a0.aeb5 ARPA FastEthernyslo00c.f1a0.c6a9
Current configuration : 1152 bytes



Internet 192.168.1.129 22 0007.e93c.df3e ARPA FastEthernet3/0
service timestamps log datetime msec
Internet 192.168.3.131 0 Incomplete ARPA FastEthernet3/0ATE_
!
hostname Router
Internet 192.168.3.130 0 Incomplete ARPA8 9 000c.f19a.596f ARPA
!s
ip subnet-zeroA
Internet 192.168.1.135 4 0007.e93c.b684 ARPA FastEthernet3/0
Internet 192.168.3.132 0 Incomplete ARPA
Protocol Address Age (min) Hardware Addr Type Interface
Internet 192.168.1.134 7 0007.e93c.b7c1 ARPA FastEthernet3/0
Internet 192.168.1.153 4 000c.f19a.7254 ARPA FastEthernet3/0
Internet 192.168.1.155 3 000c.f19a.5e5b ARPA FastEthernet3/0
Internet 192.168.1.157 9 000c.f19a.586a ARPA FastEthernet3/0
Internet 192.168.1.156 52 000c.f1a0.cf9a ARPA FastEthernet3/0
Internet 192.168.1.159 1 000c.f19a.6153 ARPA FastEthernet3/0
Internet 192.168.1.158 17 000c.f1a0.cf34 ARPA FastEthernet3/0
Internet 192.168.1.145 1 000c.f19a.5972 ARPA FastEthernet3/0
Internet 192.168.3.147 171 000c.f19a.6091 ARPA FastEthernet2/1
Internet 192.168.3.146 0 Incomplete ARPA
Internet 192.168.1.144 1 000c.f1a0.c1d9 ARPA FastEthernet3/0
Internet 192.168.3.145 0 Incomplete ARPA
Internet 192.168.1.147 37 000c.f1a0.c7e8 ARPA FastEthernet3/0
Internet 192.168.3.144 0 Incomplete ARPA
Internet 192.168.1.146 6 000c.f19a.7326 ARPA FastEthernet3/0
Internet 192.168.1.149 8 000c.f1a0.afca ARPA FastEthernet3/0
Internet 192.168.1.148 2 000c.f19a.595f ARPA FastEthernet3/0
Internet 192.168.1.151 2 000c.f1a0.b017 ARPA FastEthernet3/0
Internet 192.168.1.150 0 000c.f19a.7528 ARPA FastEthernet3/0
Internet 192.168.3.148 0 Incomplete ARPA
Router#

什么时候开始出现这种问题的,你的cpu利用率过高会不会是黑客攻击或者病毒造成的。


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