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CCNA--LAB-9:cisco更新IOS的方法

<b>第一種方法:系統還可以啟動到配置模式時</b><b> </b>

使用copy tftp flash即可更新    //拷貝TFTP伺服器上IOS到FLASH裡

<b>第二種方法:</b><b>IOS</b><b>被删除後的恢複</b><b> </b>

如果因為誤操作将FLASH中的IOS删除了,原IOS中的大部分指令都無法具體的過程如下,那麼ROUTER将進入ROM使用。此時,可以通過TFTP服 務器向中存儲的基本IOS模式,在這種模式下ROUTER傳輸IOS,使系統得已恢複。其在一台機器上安裝TFTP伺服器軟體,将IOS檔案放置在 TFTP伺服器的預設根目錄下,打開TFTP伺服器,用控制線将這台機器與ROUTER連接配接起來,另外用交叉網線連接配接機器的網卡和ROUTER的以太口。 (也可以用普通的網線将ROUTER和交換機相連再連接配接機器)做好以上工作後,打開機器的超級終端工具,連接配接上ROUTER,此時視窗中出現的指令行提示 符為: ROMMON 1 &gt; (其中“1”代表指令行的行數)。在提示符後輸入指令:(可以使用ctrl+break組合鍵進入ROMMON模式) 

ROMMON 1 &gt;IP_ADDRESS= 路由器的IP位址(需與TFTP伺服器在同一網段内) 

ROMMON 2 &gt;IP_SUBNET_MASK= 路由器的子網路遮罩 

ROMMON 3 &gt;DEFAUT_GATEWAY= 預設網關位址 (可以沒有,也可以是TFTP伺服器) 

ROMMON 4 &gt;TFTP_SERVER= TFTP 伺服器IP位址 

ROMMON 5 &gt;TFTP_FILE= IOS檔案名(隻給出檔案名,不需要路徑) 

ROMMON 6 &gt;tftpdnld 回車 

注意:前面的幾條指令必須使用大寫,而最後的tftpdnld則要用小寫。 

在tftpdnld指令執行後,隻行下,輸入reset重新開機ROUTER,要根據提示選,就可完成檔案的傳重新開機後就又回到了熟悉的IOS模式下輸。當檔案傳輸完後,将自動回到指令甚至連以前配置的資訊都不會丢失。 

<b>第三種方法:通過</b><b>Xmodem</b><b>更新</b><b>2610</b><b>的</b><b>IOS</b><b>執行個體</b><b> </b>

本篇主要介紹通過Xmodem上傳IOS的過程,準備工作,隻要有Cisco原配的線纜就可以.

在沒有IOS的情況下 系統隻能進入Rommon狀态,在這個狀态下隻能見到如下指令:

rommon 1 &gt; ?

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 &gt; xmodem -r 

<b>會提示如下警告:</b> 

WARNING: All existing data in bootflash will be lost!  

//警告:在bootflash所有現有的資料将丢失 (實際上就是把以前IOS删掉,把現在的拷貝進去)

Invoke this application only for disaster recovery. 

Do you wish to continue? y/n [n]: y 

Ready to receive file ? ... 

對于初次做IOS上傳,建議不要去修改什麼傳輸速率。傳完以後對整個系統初始化 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] 

<b>這裡說明已經成功了</b><b> </b><b>!!</b><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 -- 

00:00:07: %LINEPROTO-5-UPDOWN: Line protocol on 

WL_bank_2610_2&gt;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 

2610_2&gt;        //啟動完畢

<b>實驗完成</b><b> !!</b>

本文轉自 meiyanaa 51CTO部落格,原文連結:http://blog.51cto.com/justim/240466,如需轉載請自行聯系原作者

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