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CCNA--LAB-9:cisco升级IOS的方法

2009-12-09 08:38 477 查看
第一种方法:系统还可以启动到配置模式时[/b] [/b]

使用copy tftp flash即可升级 //拷贝TFTP服务器上IOS到FLASH里



第二种方法:[/b]IOS[/b]被删除后的恢复[/b] [/b]

如果因为误操作将FLASH中的IOS删除了,原IOS中的大部分命令都无法具体的过程如下,那么ROUTER将进入ROM使用。此时,可以通过TFTP服 务器向中存储的基本IOS模式,在这种模式下ROUTER传输IOS,使系统得已恢复。其在一台机器上安装TFTP服务器软件,将IOS文件放置在 TFTP服务器的默认根目录下,打开TFTP服务器,用控制线将这台机器与ROUTER连接起来,另外用交叉网线连接机器的网卡和ROUTER的以太口。 (也可以用普通的网线将ROUTER和交换机相连再连接机器)做好以上工作后,打开机器的超级终端工具,连接上ROUTER,此时窗口中出现的命令行提示 符为: ROMMON 1 > (其中“1”代表命令行的行数)。在提示符后输入命令:(可以使用ctrl+break组合键进入ROMMON模式)

ROMMON 1 >IP_ADDRESS= 路由器的IP地址(需与TFTP服务器在同一网段内)

ROMMON 2 >IP_SUBNET_MASK= 路由器的子网掩码

ROMMON 3 >DEFAUT_GATEWAY= 默认网关地址 (可以没有,也可以是TFTP服务器)

ROMMON 4 >TFTP_SERVER= TFTP 服务器IP地址

ROMMON 5 >TFTP_FILE= IOS文件名(只给出文件名,不需要路径)

ROMMON 6 >tftpdnld 回车

注意:前面的几条命令必须使用大写,而最后的tftpdnld则要用小写。

在tftpdnld命令执行后,只行下,输入reset重启ROUTER,要根据提示选,就可完成文件的传重启后就又回到了熟悉的IOS模式下输。当文件传输完后,将自动回到命令甚至连以前配置的信息都不会丢失。

第三种方法:通过[/b]Xmodem[/b]升级[/b]2610[/b]的[/b]IOS[/b]实例[/b] [/b]

本篇主要介绍通过Xmodem上传IOS的过程,准备工作,只要有Cisco原配的线缆就可以.
在没有IOS的情况下 系统只能进入Rommon状态,在这个状态下只能见到如下命令:

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 > xmodem -r

会提示如下警告:[/b]
WARNING: All existing data in bootflash will be lost!
//警告:在bootflash所有现有的数据将丢失 (实际上就是把以前IOS删掉,把现在的拷贝进去)
Invoke this application only for disaster recovery.
Do you wish to continue? y/n
: y
Ready to receive file ? ...

对于初次做IOS上传,建议不要去修改什么传输速率。传完以后对整个系统初始化 界面如下:

Erasing flash at 0x603c0000
program flash location 0x602f0000
Download Complete!
program load complete, entry point: 0x80008000, size: 0x2f0074
Self decompressing the image : #################################################
################################################################################
################################################################################
################################################################# [OK]

这里说明已经成功了[/b] [/b]!![/b][/b]

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 11.3(6)T, RELEASE SOFTWARE (fc1)
Copyright (c) 1986-1998 by cisco Systems, Inc.
Compiled Tue 06-Oct-98 18:42 by ccai
Image text-base: 0x80008084, data-base: 0x80554578

cisco 2610 (MPC860) processor (revision 0x202) with 12288K/4096K bytes of memory
.
Processor board ID JAB0233005Z (3677578902)
M860 processor: part number 0, mask 32
Bridging software.
X.25 software, Version 3.0.0.
1 Ethernet/IEEE 802.3 interface(s)
1 Serial network interface(s)
32K bytes of non-volatile configuration memory.
4096K bytes of processor board System flash (Read/Write)

Press RETURN to get started!

00:00:06: %LINK-3-UPDOWN: Interface Ethernet0/0, changed state to up
00:00:06: %LINK-3-UPDOWN: Interface Serial0/0, changed state to up
00:00:06: %SYS-5-CONFIG_I: Configured from memory by console
00:00:06: %SYS-5-RESTART: System restarted --
Cisco Internetwork Operating System Software
IOS (tm) C2600 Software (C2600-I-M), Version 11.3(6)T, RELEASE SOFTWARE (fc1)
Copyright (c) 1986-1998 by cisco Systems, Inc.
Compiled Tue 06-Oct-98 18:42 by ccai
00:00:07: %LINEPROTO-5-UPDOWN: Line protocol on
WL_bank_2610_2>Interface Ethernet0/0, changed state to up
00:00:07: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0, changed sta
te to up
00:00:07: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback0, changed sta
te to up
2610_2> //启动完毕

实验完成[/b] !! [/b]本文出自 “梅岩〃s博客” 博客,请务必保留此出处http://justim.blog.51cto.com/740099/240466
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