實驗環境】
Cisco Packet Tracer 5.3.2
【實驗目的】
練習Cisco IOS的備份與升級
【實驗拓撲】
【實驗步驟】
1、按拓撲圖連接設備。這次選用2950交換機作爲思科IOS承載體，因爲路由器的接口配置已經很容易了，這次順便練習一下交換機的IP地址配置。服務器還是TFTP服務器，現實環境下只需要在PC上安裝一個tftpd軟件即可。
Server服務器IP:1.1.1.250/24
2、配置交換機Vlan 1接口，爲交換機配置管理IP地址(需要與TFTP服務器處於同一網段，常識)
Switch#conf t
Switch(config)#int vlan 1
Switch(config-if)#ip add 1.1.1.1 255.255.255.0
Switch(config-if)#no shut
Switch(config-if)#end
一定記得配置完vlan 1接口IP地址後no shutdown
3、查看交換機上已有的的ios名稱
Switch#dir flash:
Directory of flash:/
1 -rw- 3058048 <no date> c2950-i6q4l2-mz.121-22.EA4.bin
64016384 bytes total (60958336 bytes free)
4、備份Cisco ios鏡像到TFTP服務器
Switch#copy flash: tftp:
Source filename []? c2950-i6q4l2-mz.121-22.EA4.bin
Address or name of remote host []? 1.1.1.250
Destination filename [c2950-i6q4l2-mz.121-22.EA4.bin]?
Writing c2950-i6q4l2-mz.121-22.EA4.bin....!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[OK - 3058048 bytes]
3058048 bytes copied in 4.844 secs (631000 bytes/sec)
5、從TFTP服務器上升級Cisco ios鏡像
TFTP服務器上的2950升級IOS鏡像文件爲c2950-i6q4l2-mz.121-22.EA8.bin
Switch#copy tftp: flash:
Address or name of remote host []? 1.1.1.250
Source filename []? c2950-i6q4l2-mz.121-22.EA8.bin
Destination filename [c2950-i6q4l2-mz.121-22.EA8.bin]?
Accessing tftp://1.1.1.250/c2950-i6q4l2-mz.121-22.EA8.bin...
Loading c2950-i6q4l2-mz.121-22.EA8.bin from 1.1.1.250: !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[OK - 3117390 bytes]
3117390 bytes copied in 1.875 secs (1662608 bytes/sec)
6、刪除舊的IOS鏡像文件
Switch#dir flash:
Directory of flash:/
1 -rw- 3058048 <no date> c2950-i6q4l2-mz.121-22.EA4.bin
2 -rw- 3117390 <no date> c2950-i6q4l2-mz.121-22.EA8.bin
64016384 bytes total (57840946 bytes free)
Switch#delete c2950-i6q4l2-mz.121-22.EA4.bin
Delete filename [c2950-i6q4l2-mz.121-22.EA4.bin]?
Delete flash:/c2950-i6q4l2-mz.121-22.EA4.bin? [confirm]
Switch#dir flash:
Directory of flash:/
2 -rw- 3117390 <no date> c2950-i6q4l2-mz.121-22.EA8.bin
64016384 bytes total (60898994 bytes free)
Switch#
7、也可以在啓動配置文件中指明需要使用的IOS
Switch(config)#boot system flash:xxx.bin
8、reload重新加載交換機之後就會使用新的IOS了。
Switch#reload
文章源自：烈火網，原文：http://www.veryhuo.com/a/view/37026.html