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通过Xmodem升级2610的IOS实例
如果你不小心使用了命令erase flash
那么发生什么就可想而知了。因此，建议在你拿到路由器等网络设备时
最好先将它的IOS等操作系统备份出来，以备万一！
本篇主要介绍通过Xmodem上传IOS的过程（以2610为例，不过这个方法用在其他设备上没什么太大区别）
准备工作，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
数据是通过终端的串口和路由器的Console口灌进去的）
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 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 ?
...
然后在超级终端的传送栏目=> 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,等待时间很长，视IOS的大小和传输速度。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]
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> |
