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小第单位因为要通过VPDN和其他单位建立连接,与电信申请了VPDN,原来用cisco2621(32M内存)做接入路由器,但随着用户的增多,设备内存使用已趋于100%,不得已购买了个cisco3725(256M内存)更换,把原来的配置导入后发现与远端计算机连接有丢包现象,原来用2621反而没有。深感纳闷,以为是IOS的问题,换了一个版本还是不得;又以为是内存问题(有128M内存是后加的),去掉用原装内存也还是一样。我换的2个IOS都是“c3725-js”的,19M以上,是不是这个原因呢?问题在哪呢?我该如何解决,或者哪位大虾能提供别的版本的IOS给我测试的,我愿意把我搜索到的IOS(各型号基本都有好几个版本)共享出来。(cisco3725的IOS在ioshunter上找不到啊)。解决不了我的春节就不好过了。
再次跪谢各大虾!再谢。
下面附上我的具体配置:
0、我们新换的路由器的信息:
Router#show vers
Cisco Internetwork Operating System Software
IOS (tm) 3700 Software (C3725-JS-M), Version 12.3(5), RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2003 by cisco Systems, Inc.
Compiled Tue 28-Oct-03 00:08 by kellythw
Image text-base: 0x60008AF4, data-base: 0x61E9E000
ROM: System Bootstrap, Version 12.2(8r)T2, RELEASE SOFTWARE (fc1)
Router uptime is 21 hours, 45 minutes
System returned to ROM by reload
System image file is "flash:c3725-js-mz.123-5.bin"
cisco 3725 (R7000) processor (revision 0.1) with 252928K/9216K bytes of memory.
R7000 CPU at 240MHz, Implementation 39, Rev 3.3, 256KB L2 Cache
Bridging software.
X.25 software, Version 3.0.0.
SuperLAT software (copyright 1990 by Meridian Technology Corp).
TN3270 Emulation software.
2 FastEthernet/IEEE 802.3 interface(s)
2 Serial(sync/async) network interface(s)
DRAM configuration is 64 bits wide with parity disabled.
55K bytes of non-volatile configuration memory.
31360K bytes of ATA System CompactFlash (Read/Write)
Configuration register is 0x101
1、导入原来Cisco2621xm配置时出现的错误提示。就1个,其他都导入了。
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#
Router(config)#!
Router(config)#no service single-slot-reload-enable
^
% Invalid input detected at '^' marker.
Router(config)#service timestamps debug uptime
2、Cisco3725最后运行的配置文件(配置文件中部分设置因为涉及网络安全,我已做去除)
Router#show run
Building configuration...
Current configuration : 7676 bytes
!
version 12.3
service timestamps debug uptime
service timestamps log datetime localtime
no service password-encryption
!
hostname Router
!
boot-start-marker
boot system flash c3725-js-mz.123-5.bin
boot-end-marker
!
logging buffered 16384 debugging
enable secret (密码我去除了)
enable password (密码我去除了)
!
username (用户名、密码我去除了)
(此配置中的其他用户我在此去掉了)
clock timezone CST 8
aaa new-model
!
!
aaa authentication login default local
aaa authentication ppp default local group radius
aaa session-id common
ip subnet-zero
!
!
no ip domain lookup
!
vpdn enable
vpdn search-order domain
!
vpdn-group 1
accept-dialin
protocol l2tp
virtual-template 1
terminate-from hostname (此处我去除了)
lcp renegotiation always
l2tp tunnel password 7 (密码我去除了)
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
interface Loopback1
ip address 10.2.2.2 255.255.255.255
!
interface FastEthernet0/0
ip address (内网IP,我去除了)
speed 100
half-duplex
!
interface Serial0/0
description
ip address (外网IP,我去除了)
no ip redirects
no ip proxy-arp
clockrate 2000000
no fair-queue
!
interface FastEthernet0/1
no ip address
shutdown
!
interface Serial0/1
no ip address
shutdown
clockrate 2000000
!
interface Virtual-Template1
ip unnumbered FastEthernet0/0
peer default ip address pool test
ppp authentication pap
!
ip local pool test 172.32.32.10 172.32.39.254
no ip http server
ip classless
ip route 0.0.0.0 0.0.0.0 Serial0/0
ip route (内网路由,我去除了)
!
!
access-list (此部分为访问控制列表,我去除了)
!
!
snmp-server engineID local 0000000902000007EB780160
snmp-server community public RO
snmp-server community private RW
snmp-server enable traps tty
snmp-server host (内网地址,我去除了)public
!
!
!
!
!
!
privilege configure level 6 interface
privilege exec level 6 connect
privilege exec level 6 telnet
privilege exec level 6 configure terminal
privilege exec level 6 configure
privilege exec level 6 show running-config
privilege exec level 1 show
privilege exec level 5 clear ip nat translation *
privilege exec level 5 clear ip nat translation
privilege exec level 5 clear ip nat
privilege exec level 5 clear ip
privilege exec level 5 clear counters
privilege exec level 5 clear
!
line con 0
line aux 0
line vty 0 4
access-class 100 in
exec-timeout 0 0
!
!
end
3、运行情况
从路由器3725上ping 电信对端IP,结果正常,无丢包现象;ping 内网机器,也无丢包现象。
但是从内网机器或路由器3725上ping远端VPDN接入机器获取的IP(172.32.32那个地址池中的IP地址)都出现严重丢包现象,对端反映网络能连上,但速度非常的慢(估计是丢包重新传造成)。
我原来使用另一个IOS版本(c3725-js-mz.122-15.T.bin)结果也是一样。是否和IOS版本有关系呢?原来正常使用的cisco2621正常使用的IOS为:c2600-is-mz.121-19.bin 。cisco3725切换环境和原来的2621完全一样,配置也是用2621的,但2621正常,3725有丢包。奇怪
到底是何问题啊,困扰我好久了,如能蒙大虾指教解决,不胜感激。
我的邮箱:photo2u@163.com
谢谢。 |
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