一、tftp备份路由器配置文件
Router>en
Router#
Router#copy startup-config tftp:
Address or name of remote host []? 192.168.1.2
Destination filename [Router-confg]?
Writing startup-config....!!
[OK - 420 bytes]
420 bytes copied in 3.012 secs (0 bytes/sec)
Router#
注意：1. 选用交叉线
2.不要写错要备份的目的ip地址
二、系统升级
这是路由升级前的版本号
通过以下命令
Router>
Router>en
Router#
Router#copy tftp flash:
Address or name of remote host []? 192.168.1.2
Source filename []? c2600-advipservicesk9-mz.124-15.T1.bin
Destination filename [c2600-advipservicesk9-mz.124-15.T1.bin]?
Accessing tftp://192.168.1.2/c2600-advipservicesk9-mz.124-15.T1.bin...
Loading c2600-advipservicesk9-mz.124-15.T1.bin from 192.168.1.2: !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[OK - 33591768 bytes]
Configuration register is 0x2102
Router#
Router#reload ←← （记得重启!）
Proceed with reload? [confirm]
%SYS-5-RELOAD: Reload requested by console. Reload Reason: Reload Command.
System Bootstrap, Version 12.1(3r)T2, RELEASE SOFTWARE (fc1)
Copyright (c) 2000 by cisco Systems, Inc.
Cisco 2621 (MPC860) processor (revision 0x200) with 253952K/8192K bytes of memory
Self decompressing the p_w_picpath :
########################################################################## [OK]
Restricted Rights Legend
Router>
Router>en
Router#
Router#show v
Router#show version
Cisco IOS Software, 2600 Software (C2600-ADVIPSERVICESK9-M), Version 12.4(15)T1, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2007 by Cisco Systems, Inc.
Compiled Wed 18-Jul-07 06:21 by pt_rel_team
ROM: System Bootstrap, Version 12.1(3r)T2, RELEASE SOFTWARE (fc1)
Copyright (c) 2000 by cisco Systems, Inc.
System returned to ROM by power-on
System p_w_picpath file is "c2600-advipservicesk9-mz.124-15.T1.bin"
注意: 1.在实际升级过程中千万不要触碰电源，否则可能导致操作系统未完全升级而断电，那么系统将没有操作系统。
2.在升级之后记得重启更换系统
3.不要写错版本号
