路由器IOS升级方法总结

路由器IOS升级方法总结 
IOS升级方法一

在对能够正常启动的CISCO路由器的IOS进行升级时,比较简单。具体步骤如下:

1、寻找一种TFTP服务器软件(有CISCO公司的TFTPServer或3COM公司的3Cserver等,在升级较大IOS映象文件时,建议用3Cserver),安装在一台计算机上,将要升级的IOS映象文件拷贝到相关的目录中(例:D:\),并运行TFTP服务器软件,通过菜单设置Root目录为拷贝IOS映象文件所在目录(如D:\)。假设该计算机的IP地址为10.32.10.1;

2、连接路由器的console口与PC机的COM1,使用PC的超级终端软件访问路由器,将路由器的地址设为10.32.10.32(与计算机的IP地址同网段即可)。建议在进行IOS升级前将原有IOS文件备份下来,防止待升级的IOS文件存在问题不可用;


QUOTE:
     Router# dir flash:     (查看目前IOS映象文件名,也可用Router#Show version)

     Directory of flash:/

     1  -rw-     5998292                C2600-I-MZ.122-11.BIN

     8388608 bytes total (2390252 bytes free)

     Router#copy flash tftp            (备份IOS文件)

     Source filename []?c2600-i-mz.122-11.bin

     Address or name of remote host []? 10.32.10.1    (TFTP服务器地址)

     Destination filename [c2600-i-mz.122-11.bin]?

     !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

     …

     !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

     5998292 bytes copied in 324.071 secs (18509 bytes/sec)

     Router#
3、对路由器进行IOS升级;


QUOTE:
     Router#copy tftp flash

     Address or name of remote host []? 10.32.10.1       (TFTP服务器地址)

     Source filename []? c2600-i-mz.122-11.bin         (需升级的新IOS映象文件名)

     Destination filename [c2600-i-mz.122-11.bin]?

     Do you want to over write? [confirm]

     Accessing tftp://10.32.10.1/c2600-i-mz.122-11.bin...

     Erase flash: before copying? [confirm]

     Erasing the flash filesystem will remove all files! Continue? [confirm]

     Erasing device... eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee ...erasedee

     Erase of flash: complete

     Loading c2600-i-mz.122-11.bin from 10.32.10.1 (via Ethernet0/0): !!!!!!!!!!!!!!

     !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

     …

     !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

     [OK - 5998292 bytes]

     Verifying checksum...  OK (0xA0C0)

     5998292 bytes copied in 318.282 secs (18846 bytes/sec)

     Router#

IOS升级方法二

由于升级失败后或者路由器的config-register寄存器值为0x2101时,开启路由器时、或者在开启(某些型号)Cisco路由器的电源开关后30秒内按下Ctrl+break键,中断路由器的正常启动,路由器都会进入rom监视模式,即Router(boot)>,在这种情形下,对路由器的IOS进行升级,也比较简单。首先进入特权模式下,即


QUOTE:
     Router(boot)>en

     Router(boot)# 
其他升级步骤同方法一,即:执行copy tftp flash命令,对IOS进行升级。升级完成后,不要忘了修改config-register寄存器值为0x2102(恢复正常值)。


QUOTE:
     Router(boot)# t

     Router(boot)( config)# config-register 0x2102

     Router(boot)( config)#exit

     Router(boot)#wr

     Router(boot)#reload       
重启即可。


IOS升级方法三

由于不小心使用了命令erase flash或升级失败后或在开启(某些型号)Cisco路由器的电源开关后30秒内按下Ctrl+break键,中断路由器的正常启动,路由器都会进入rom监视模式,即 rommon 1>,在这种情形下,对路由器的IOS进行升级,情况要稍微复杂一点。在rommon 1>状态下,可键?请求帮助。(1为命令行序号,每执行1条命令自动加1)


QUOTE:
     rommon 1 > ?

     alias               set and display aliases command

     boot                boot up an external process

     break               set/show/clear the breakpoint

     confreg             configuration register utility

     cont                continue executing a downloaded image

     context             display the context of a loaded image

     cookie              display contents of cookie PROM in hex

     dev                 list the device table

     dir                 list files in file system

     dis                 display instruction stream

     dnld                serial download a program module

     frame               print out a selected stack frame

     help                monitor builtin command help

     history             monitor command history

     meminfo             main memory information

     repeat              repeat a monitor command

     reset               system reset

     set                 display the monitor variables

     stack               produce a stack trace

     sync                write monitor environment to NVRAM

     sysret              print out info from last system return

     tftpdnld            tftp image download

     unalias             unset an alias

     unset               unset a monitor variable

     xmodem              x/ymodem image download

     rommon 2 >
在rommon 1>状态下有两种升级IOS方法。

(一)、通过Xmodem命令(注:Xmodem与实际的modem没有任何联系 只是一个传输协议 数据是通过终端的串口和路由器的Console口灌进去的)升级IOS,具体步骤如下:

1、用Cisco原配的线缆连接路由器的console口与PC机的COM1,使用PC机的超级终端软件访问路由器,这时不需要对PC和路由器配置任何地址。

2、在这个模式下,输入Xmodem命令,即:


QUOTE:
     rommon 2 > xmodem -c c2600-i-mz.122-11.bin

     (-c是带校验,c2600-i-mz.122-11.bin为存放在PC机上的IOS映像文件)

     WARNING: All existing data in bootflash will be lost!

     Invoke this application only for disaster recovery.

     Do you wish to continue? y/n  [n]:  y
Ready to receive file c2600-i-mz.122-11.bin ...      (此时在超级终端的传送栏目=> 选择发送文件选项 => 再选择Xmodem 并指明IOS映像文件所在的路径,按发送即开始上传IOS,等待时间很长,视IOS的大小和传输速度。)


QUOTE:
     Erasing flash at 0x607c0000

     program flash location 0x605b0000

     Download Complete!
传完以后,对整个系统初始化 显示如下:


QUOTE:
     program load complete, entry point: 0x80008000, size: 0x5b85e0

     Self decompressing the image : #################################################

     ################################################# [OK]

     Smart Init is disabled. IOMEM set to: 10

     Using iomem percentage: 10

     Restricted Rights Legend

     Use, duplication, or disclosure by the Government is

     subject to restrictions as set forth in subparagraph

     (c) of the Commercial Computer Software - Restricted

     Rights clause at FAR sec. 52.227-19 and subparagraph

     (c) (1) (ii) of the Rights in Technical Data and Computer

     Software clause at DFARS sec. 252.227-7013.

     cisco Systems, Inc.

     170 West Tasman Drive

     San Jose, California 95134-1706

     Cisco Internetwork Operating System Software

     IOS (tm) C2600 Software (C2600-I-M), Version 12.2(11)T9,  RELEASE SOFTWARE (fc1)

     TAC Support: http://www.cisco.com/tac

     Copyright (c) 1986-2003 by cisco Systems, Inc.

     Compiled Mon 23-Jun-03 15:42 by cmong

     Image text-base: 0x8000809C, data-base: 0x80A68B48

     cisco 2610 (MPC860) processor (revision 0x203) with 22528K/2048K bytes of memory

     Processor board ID JAD03483395 (1128032249)

     M860 processor: part number 0, mask 49

     Bridging software.

     X.25 software, Version 3.0.0.

     1 Ethernet/IEEE 802.3 interface(s)

     2 Serial(sync/async) network interface(s)

     32K bytes of non-volatile configuration memory.

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

     Press RETURN to get started!

     *Mar  1 00:00:05.652: %PA-2-UNDEFPA: Undefined Port Adaptor type 100 in bay 1

     *Mar  1 00:00:07.996: %LINK-3-UPDOWN: Interface Ethernet0/0, changed state to up

     *Mar  1 00:00:07.996: %LINK-3-UPDOWN: Interface Serial0/0, changed state to down

     *Mar  1 00:00:07.996: %LINK-3-UPDOWN: Interface Serial0/1, changed state to down

     *Mar  1 00:00:09.142: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0/0, changed state to up

     *Mar  1 00:00:09.142: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0, changed state to down

     *Mar  1 00:00:09.142: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/1, changed state to down

     *Mar  1 00:00:09.458: %SYS-5-CONFIG_I: Configured from memory by console

     *Mar  1 00:00:11.245: %LINK-5-CHANGED: Interface Serial0/1, changed state to administratively down

     *Mar  1 00:00:12.275: %SYS-5-RESTART: System restarted --Cisco Internetwork Operating System Software

     IOS (tm) C2600 Software (C2600-I-M), Version 12.2(11)T9,  RELEASE SOFTWARE (fc1)

     TAC Support: http://www.cisco.com/tac

     Copyright (c) 1986-2003 by cisco Systems, Inc.

     Compiled Mon 23-Jun-03 15:42 by cmong

     *Mar  1 00:00:12.279: %SNMP-5-COLDSTART: SNMP agent on host NE16 is undergoing a cold start

Router>
采用这种方法时,由于使用console口来传送,速率为9600bps,需要时间较长。因此可修改console口速率利用xmodem命令实现快速升级IOS。具体方法如下:


QUOTE:
     rommon 1 > confreg 回车

     Configuration Summary

     enabled are:

     load rom after netboot fails

     console baud: 9600

     boot: image specified by the boot system commands

     or default to: cisco2-C2600

     do you wish to change the configuration? y/n [n]: y (选择 yes)

     enable "diagnostic mode"? y/n [n]: n (选择 no)

     enable "use net in IP bcast address"? y/n [n]: n (选择 no)

     disable "load rom after netboot fails"? y/n [n]: n (选择 no)

     enable "use all zero broadcast"? y/n [n]: n (选择 no)

     enable "break/abort has effect"? y/n [n]: n (选择 no)

     enable "ignore system config info"? y/n [n]: n (选择 no)

     change console baud rate? y/n [n]: y (选择 yes)

     enter rate: 0 = 9600, 1 = 4800, 2 = 1200, 3 = 2400

     4 = 19200, 5 = 38400, 6 = 57600, 7 = 115200 [0]: 7 (选择 7,用最大的11520

     速率的xmodem传输)

     change the boot characteristics? y/n [n]: n (选择 no)

     Configuration Summary

     enabled are:

     load rom after netboot fails

     console baud: 115200

     boot: image specified by the boot system commands

     or default to: cisco2-C2600

     do you wish to change the configuration? y/n [n]: n (选择 no)

     You must reset or power cycle for new config to take effect

     rommon 2 > reset 回车 
注意:在按reset键前,需要修改串口速度(我的电脑---端口属性----串口速度调为115200),然后再修改超级终端里设置速率为115200,记住,一定要这么做,否则会出现乱码! 然后关闭这个超级终端,重新建立一个超级终端连接,重新启动系统后,出现


QUOTE:
     rommon 1> 提示符 
然后,输入


QUOTE:
     rommon 1> xmodem -r

     Do not start the sending program yet...

     Invoke this application only for disaster recovery.

     Do you wish to continue? y/n [n]: y (选择 yes)

     Ready to receive file ... 
此时,在超级终端的菜单上的“传送”---“发送文件”----选择IOS映像文件所在地以及选择使用“xmodem”协议,点击“发送”即可。等待10-20分钟左右就可升级完3-6M的IOS文件!待升级完成后,请记住修改回计算机串口与超级终端、路由器confreg下的xmodem等传输速率为9600bps。

方法如下:


QUOTE:
     Router>en 进入新IOS的特权模式

     Router#reload 重启系统

     Proceed with reload? [confirm] 回车

     00:01:04: %SYS-5-RELOAD: Reload requested

     System Bootstrap, Version 11.3(2)XA4, RELEASE SOFTWARE (fc1)

     Copyright (c) 1999 by cisco Systems, Inc.

     TAC:Home:SW:IOS:Specials for info

     PC = 0xfff0a530, Vector = 0x500, SP = 0x680127b0

     C2600 platform with 24576 Kbytes of main memory

     PC = 0xfff0a530, Vector = 0x500, SP = 0x80004684           

     monitor: command "boot" aborted due to user interrupt      

     30秒内按ctrl+break键

     rommon 1 > confreg ( 输入“confreg”命令)

     Configuration Summary

     enabled are:

     load rom after netboot fails

     console baud: 115200

     boot: image specified by the boot system commands

     or default to: cisco2-C2600

     do you wish to change the configuration? y/n [n]: y (选择 yes)

     enable "diagnostic mode"? y/n [n]: n (选择 no)

     enable "use nn IP bcast address"? y/n [n]: n (选择 no)

     disable "load rom after netboot fails"? y/n [n]: n (选择 no)

     enable "use all zero broadcast"? y/n [n]: n (选择 no)

     enable "break/abort has effect"? y/n [n]: n (选择 no)

     enable "ignore system config info"? y/n [n]: n (选择 no)

     change console baud rate? y/n [n]: y (选择 yes)

     enter rate: 0 = 9600, 1 = 4800, 2 = 1200, 3 = 2400

     4 = 19200, 5 = 38400, 6 = 57600, 7 = 115200 [7]: 0 (选择 0,改回用标准速率速率9600的xmodem传输)

     change the boot characteristics? y/n [n]: n (选择 no)

     Configuration Summary

     enabled are:

     load rom after netboot fails

     console baud: 9600

     boot: image specified by the boot system commands

     or default to: cisco2-C2600

     do you wish to change the configuration? y/n [n]: n You must reset or power cycle for new config to take effect

     rommon 2 > 
此时手工改回计算机串口与超级终端2者传输速率为9600

然后敲入


QUOTE:
     rommon 2 >reset 
最好关掉电源后,重新启动。利用xmodem命令实现路由器IOS升级速度较慢,往往等上很长时间,为了快速升级,可以采用下列方法。


(二)通过tftpdnld命令升级IOS,具体步骤如下:

1、用Cisco原配的线缆连接路由器的console口与PC机的COM1,使用PC机的超级终端软件访问路由器;用一根双绞线连接路由器的eth0/0口与PC机的网卡。

2、将路由器的eth0/0口IP地址设为10.32.10.32;PC机的IP地址设为10.32.10.1。将要升级的IOS映象文件拷贝到相关的目录中,并运行TFTP服务器软件,通过菜单设置Root目录为拷贝IOS映象文件所在目录。

3、通过set 命令查看配置参数


QUOTE:
     rommon 2 > set

     PS1=rommon ! >

     BOOT=

     BSI=0

     RET_2_RTS=

     ?=0
4、在 rommon 状态下输入:(注意大小写)


QUOTE:
     rommon 3 >IP_ADDRESS=10.32.10.1             (路由器的ip地址)

     rommon 4 >IP_SUBNET_MASK=255.255.255.0     (路由器的掩码)

     rommon 5 >DEFAULT_GATEWAY=10.32.10.32     (缺省网关,是pc机的ip地址)

     rommon 6 >TFTP_SERVER=10.32.10.32         (是pc机的ip地址)

     rommon 7 >TFTP_FILE=C2600-I-MZ.122-11.BIN    (上传ios文件的名称)

     rommon 8>sync                             (保存参数配置)

     rommon 9 >set                              (查看)

     rommon 10 > set

     PS1=rommon ! >

     BOOT=

     IP_ADDRESS=10.32.10.1

     IP_SUBNET_MASK=255.255.255.0

     DEFAULT_GATEWAY=10.32.10.32

     TFTP_SERVER=10.32.10.32

     TFTP_FILE=C2600-I-MZ.122-11.BIN

     BSI=0

     RET_2_RTS=

     ?=0

     rommon 11 >tftpdnld
执行tftpdnld命令进行ios升级,有时可能会报错或命令不执行,这时只要用sync命令保存配置后,重新启动路由器(最好关掉电源再开机)后,再执行tftpdnld命令就可以了。


QUOTE:
     rommon 11 >tftpdnld(传送文件)出现提示选择y

     IP_ADDRESS: 10.32.10.1

     IP_SUBNET_MASK: 255.255.255.0

     DEFAULT_GATEWAY: 10.32.10.32

     TFTP_SERVER: 10.32.10.32

     TFTP_FILE: C2600-I-MZ.122-11.BIN

     Invoke this command for disaster recovery only.

     WARNING: all existing data in all partitions on flash will be lost!

     Do you wish to continue? y/n:  [n]:  y

     Receiving C2600-I-MZ.122-11.BIN from 10.32.10.32!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

     !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

     …

     !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

     File reception completed.

     Copying file C2600-I-MZ.122-11.BIN to flash.

     Erasing flash at 0x607c0000

     program flash location 0x605b0000

     rommon 13 >

     在rommon 13 >提示符下键入reset,或重新启动路由器(power-cycle),进入正常引导状态,即:

     Router>


交换机如何升级IOS:
1、用控制线连接交换机console口与计算机串口1,用带有xmodem功能的终端软件连接(win2000 and xp的超级终端就带这功能)。

2、设置连接方式为串口1(如果连接的是其他串口就选择其他串口),速率9600,无校验,无流控,停止位1。或者点击默认设置也可以。

3、连接以后计算机回车出现交换机无ios的界面,一般的提示符是:switch: (如果不是请继续下面步骤4-5)

4、拔掉交换机后的电源线

5、按住交换机面板左侧的mode键(一般交换机就着一个键),插入交换机后边的电源插头给交换机加电。等到看到交换机面板上所有以太口指示灯都亮绿灯(只有1口不亮)和交换机的几个系统指示灯只有最上面一个常亮时,放开mode键。

6、放开mode键后,在超级终端提示符switch:后输入:

switch:flash_init

会出现如下提示:

Initializing Flash...
flashfs[0]: 1 files, 1 directories
flashfs[0]: 0 orphaned files, 0 orphaned directories
flashfs[0]: Total bytes: 3612672
flashfs[0]: Bytes used: 1536
flashfs[0]: Bytes available: 3611136
flashfs[0]: flashfs fsck took 3 seconds.
...done Initializing Flash.
Boot Sector Filesystem (bs installed, fsid: 3
Parameter Block Filesystem (pb installed, fsid: 4

7、switch:load_helper

输入后无提示

8:输入拷贝指令:(格式:copy xmodem: flash:imagename.bin)注:在flash前要加一个空格

switch:copy xmodem: flash:image_filename.bin

我的实际指令是:

switch: copy xmodem: flash:c3550-i5q3l2-mz.121-20.EA1a.bin

出现如下提示:

Begin the Xmodem or Xmodem-1K transfer now...

9、系统提示不断出现C这个字母就可以开始传文件了

10、点击超级终端菜单:传送---发送文件,在协议选项中选择Xmodem或者Xmodem-1K协议,然后选择ios的影像文件(*.bin),开始传送。

11、因为不能改速率,所以传送得很慢,我的大概传送了100分钟左右,请耐心等待。


12、传送完毕后提示:
File "xmodem:" successfully copied to "flash: c3550-i5q3l2-mz.121-20.EA1a.bin "
switch:

13、在提示符下输入
switch:boot

启用新的ios系统,此时我的原配置还都在!

14、拔掉电源后重新加电完成恢复工作。

from:http://www.mimicall.com/dispbbs.asp?boardID=7&ID=248&page=1
 


     本文转自 wqmsl 51CTO博客,原文链接:http://blog.51cto.com/wqmsl/309278,如需转载请自行联系原作者



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