CCNA网络技术实验手册:Cisco IOS备份与升级

实验环境】

Cisco Packet Tracer 5.3.2

【实验目的】

练习Cisco IOS的备份与升级

【实验拓扑】

【实验步骤】

一、按拓扑图链接设备。此次选用2950交换机做为思科IOS承载体，由于路由器的接口配置已经很容易了，此次顺便练习一下交换机的IP地址配置。服务器仍是TFTP服务器，现实环境下只须要在PC上安装一个tftpd软件便可。

Server服务器IP:1.1.1.250/24

二、配置交换机Vlan 1接口，为交换机配置管理IP地址(须要与TFTP服务器处于同一网段，常识)

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

必定记得配置完vlan 1接口IP地址后no shutdown

三、查看交换机上已有的的ios名称

Switch#dir flash:
Directory of flash:/

1  -rw-     3058048          <no date>  c2950-i6q4l2-mz.121-22.EA4.bin

64016384 bytes total (60958336 bytes free)

四、备份Cisco ios镜像到TFTP服务器

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)

五、从TFTP服务器上升级Cisco ios镜像

TFTP服务器上的2950升级IOS镜像文件为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)

六、删除旧的IOS镜像文件

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#

七、也能够在启动配置文件中指明须要使用的IOS

Switch(config)#boot system flash:xxx.bin

八、reload从新加载交换机以后就会使用新的IOS了。

Switch#reload

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