pix 515R performance

[liu_lai]

A campus network:

I have a pix515R and a 3640 connect to internet . The Link to Internet is 100M.when I do not use 515 , only use 3640 do NAT , the browse internet speed (download big file speed)is high ,but 3640 cpu usage is high as 80%,the concurent connection users number is small .

When I use 515R to do NAT , the web browse speed is low (as about 50kbps) , but the concurrent user connection is high , what is the matter ?How can I do?

thank you .my email:

liulai@digitalchina.com

[liu_lai]

the 3640 show run:

interface FastEthernet0/0

ip address

ip nat outside

speed 100

full-duplex

!

interface FastEthernet0/1

ip address

ip nat inside

speed 100

half-duplex

!

ip nat translation timeout 1000

ip nat translation tcp-timeout 500

ip nat translation udp-timeout 60

ip nat translation finrst-timeout 30

ip nat translation max-entries 3500

ip nat pool 3640outpool 61.x 61.x netmask 255.255.255.0

ip nat pool 3640pool 61.x 61.1x netmask 255.255.255.0

ip nat inside source list 1 pool 3640pool overload

ip nat inside source static 10.* 61.*

....................

ip classless

ip route 0.0.0.0 0.0.0.0 61.*

ip route 10.*

ip http server

!

access-list 1 permit any

snmp-server engineID local 0000000902000030854BF461

snmp-server community RO

snmp-server community RW

snmp-server community RO

snmp-server community RW

snmp-server packetsize 2048

!

line con 0

transport input none

line aux 0

line vty 0 4

password

login

!

end

[liu_lai]

the 3640 show cpu

CPU utilization for five seconds: 81%/65%; one minute: 79%; five minutes: 76%

PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process

1 3168 88494 35 0.00% 0.00% 0.00% 0 Load Meter

2 1452 6362 228 7.19% 0.62% 0.13% 130 Virtual Exec

3 2232892 122619 18210 0.00% 0.28% 0.39% 0 Check heaps

4 0 1 0 0.00% 0.00% 0.00% 0 Chunk Manager

5 168 248 677 0.00% 0.00% 0.00% 0 Pool Manager

6 0 2 0 0.00% 0.00% 0.00% 0 Timers

7 0 2 0 0.00% 0.00% 0.00% 0 Serial Backgroun

8 1060 88340 11 0.00% 0.00% 0.00% 0 ALARM_TRIGGER_SC

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

10 264 14758 17 0.00% 0.00% 0.00% 0 Environmental mo

11 12822588 549310 23343 1.04% 3.39% 3.84% 0 ARP Input

12 0 2 0 0.00% 0.00% 0.00% 0 DDR Timers

13 0 2 0 0.00% 0.00% 0.00% 0 Dialer event

14 8 2 4000 0.00% 0.00% 0.00% 0 Entity MIB API

15 0 1 0 0.00% 0.00% 0.00% 0 SERIAL A'detect

16 0 1 0 0.00% 0.00% 0.00% 0 Critical Bkgnd

17 10716 60255 177 0.00% 0.00% 0.00% 0 Net Background

18 4 47 85 0.00% 0.00% 0.00% 0 Logger

19 37796 440174 85 0.00% 0.01% 0.00% 0 TTY Background

20 9968 440180 22 0.00% 0.00% 0.00% 0 Per-Second Jobs

21 0 2 0 0.00% 0.00% 0.00% 0 Hawkeye Backgrou

22 1820 14529 125 0.00% 0.00% 0.00% 0 Net Input

23 3756 88494 42 0.00% 0.00% 0.00% 0 Compute load avg

24 83040 7379 11253 0.00% 0.02% 0.00% 0 Per-minute Jobs

26 68041212 25102187 2710 7.60% 9.84% 9.65% 0 IP Input

27 15304 51603 296 0.00% 0.00% 0.00% 0 CDP Protocol

28 0 1 0 0.00% 0.00% 0.00% 0 X.25 Encaps Mana

29 0 2 0 0.00% 0.00% 0.00% 0 Emulator

30 0 1 0 0.00% 0.00% 0.00% 0 Asy FS Helper

31 0 1 0 0.00% 0.00% 0.00% 0 PPP IP Add Route

32 27872 7397 3768 0.00% 0.00% 0.00% 0 IP Background

33 3052 7380 413 0.00% 0.00% 0.00% 0 Adj Manager

34 544 435 1250 0.00% 0.00% 0.00% 0 TCP Timer

35 1012 1300 778 0.00% 0.00% 0.00% 0 TCP Protocols

36 0 1 0 0.00% 0.00% 0.00% 0 Probe Input

37 0 1 0 0.00% 0.00% 0.00% 0 RARP Input

38 0 1 0 0.00% 0.00% 0.00% 0 HTTP Timer

39 0 1 0 0.00% 0.00% 0.00% 0 Socket Timers

40 4 2 2000 0.00% 0.00% 0.00% 0 DHCPD Receive

41 119164 7377 16153 0.00% 0.02% 0.00% 0 IP Cache Ager

42 0 1 0 0.00% 0.00% 0.00% 0 COPS

43 0 1 0 0.00% 0.00% 0.00% 0 PAD InCall

44 0 2 0 0.00% 0.00% 0.00% 0 X.25 Background

45 0 1 0 0.00% 0.00% 0.00% 0 ISDN Timer

47 0 2 0 0.00% 0.00% 0.00% 0 Router Autoconf

48 0 1 0 0.00% 0.00% 0.00% 0 ISDNMIB Backgrou

49 0 1 0 0.00% 0.00% 0.00% 0 CallMIB Backgrou

50 0 1 0 0.00% 0.00% 0.00% 0 SNMP ConfCopyPro

51 0 1 0 0.00% 0.00% 0.00% 0 Syslog Traps

52 0 1 0 0.00% 0.00% 0.00% 0 SNMP Timers

53 920 33 27878 0.00% 0.00% 0.00% 0 IP SNMP

54 68 24 2833 0.00% 0.00% 0.00% 0 SNMP Traps

55 894808 6346223 140 0.32% 0.35% 0.31% 0 IP NAT Ager

57 108 3690 29 0.00% 0.00% 0.00% 0 DHCPD Timer

58 1352 125394 10 0.00% 0.00% 0.00% 0 DHCPD Database

[liu_lai]

the 3640 show version

------------------ show version ------------------

Cisco Internetwork Operating System Software

IOS (tm) 3600 Software (C3640-I-M), Version 12.1(2)T, RELEASE SOFTWARE (fc1)

Copyright (c) 1986-2000 by cisco Systems, Inc.

Compiled Tue 16-May-00 12:26 by ccai

Image text-base: 0x600088F0, data-base: 0x60924000

ROM: System Bootstrap, Version 11.1(20)AA2, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)

edu_3640 uptime is 5 days, 2 hours, 59 minutes

System returned to ROM by power-on

System image file is "flash:c3640-i-mz.121-2.T"

cisco 3640 (R4700) processor (revision 0x00) with 98304K/32768K bytes of memory.

Processor board ID 24363257

R4700 CPU at 100Mhz, Implementation 33, Rev 1.0

Bridging software.

X.25 software, Version 3.0.0.

2 FastEthernet/IEEE 802.3 interface(s)

DRAM configuration is 64 bits wide with parity enabled.

125K bytes of non-volatile configuration memory.

8192K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102