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使用Xmodem恢复IOS方法

假如你不小心应用了敕令erase flash 那么发生什么就可想而知了。是以,建议在你拿到路由器等收集设备时 最好先将它的IOS等操作系统备份出来,以备万一!

本篇主要先容经由过程Xmodem上传IOS的历程(以Cisco 2610为例,不过这个措施用在其他设备上没什么太大年夜差别)筹备事情,只要有Cisco原配的线缆就可以(注:Xmodem与实际的modem没有任何联系 只是一个传输协议 数据是经由过程终真个串口和路由器的Console口灌进去的)

在没有IOS的环境下 系统只能进入Rommon状态,在这个状态下只能见到如下敕令:

rommon 8 > ?

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

在这个模式下,输入Xmodem

rommon 9 > xmodem

会提示如下警告:

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 ? ...

然后在超级终真个传送栏目=> 选择发送选项 => 再选择Xmodem 并指明IOS所在的路径即开始上传IOS,等待光阴很长,视IOS的大年夜小和传输速率。对付初次做IOS上传,建议不要去改动什么传输速度。传完今后 对全部系统初始化 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]

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>

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