Cisco3750更换IOS

menny

　　背景：两台Cisco3750做双机，Cisco3750-01硬件故障，罢工了。新买的二手交换机与之前的IOS不一致，故需要更换IOS。
　　准备工作：网线、console线、tftp工具
　　操作步骤：
　　一、从Cisco3750-02上下载以前的IOS
　　1、在交换机接口上配置一个接口地址；
　　SW-A-02(3750-2)(config)#int g1/0/23
　　SW-A-02(3750-2)(config-if)#no switchport
　　SW-A-02(3750-2)(config-if)#ip address 192.168.100.100 255.255.255.0
　　2、笔记本用网线连接到交换机；
　　笔记本使用ip地址192.168.100.101，开启tftp工具（3CDaemon）
　　3、下载IOS；
　　（1）笔记本与交换机连通性测试
　　SW-A-02(3750-2)#ping 192.168.100.101
　　Type escape sequence to abort.
　　Sending 5, 100-byte ICMP Echos to 192.168.100.101, timeout is 2 seconds:
　　.!!!!
　　Success rate is 80 percent (4/5), round-trip min/avg/max = 1/1/1 ms
　　（2）查看Flash信息
　　SW-A-02(3750-2)#show flash
　　Directory of flash:/
　　2  -rwx        2116  Jan 10 2013 18:53:29 +08:00  vlan.dat
　　3  drwx         192   Mar 1 1993 08:19:14 +08:00  c3750-i5-mz.122-20.SE4
　　89  -rwx       16406  Sep 20 2014 17:05:31 +08:00  config.text
　　90  -rwx        3110  Mar 13 1993 12:40:51 +08:00  startup-configw
　　91  -rwx          27  Sep 20 2014 17:05:31 +08:00  private-config.text
　　15998976 bytes total (7386112 bytes free)
　　SW-A-02(3750-2)#cd c3750-i5-mz.122-20.SE4
　　SW-A-02(3750-2)#dir
　　Directory of flash:/c3750-i5-mz.122-20.SE4/
　　4  drwx        2688   Mar 1 1993 08:16:56 +08:00  html
　　86  -rwx     5044988   Mar 1 1993 08:19:14 +08:00  c3750-i5-mz.122-20.SE4.bin
　　87  -rwx         494   Mar 1 1993 08:19:14 +08:00  info
　　15998976 bytes total (7386112 bytes free)
　　SW-A-02(3750-2)#pwd
　　flash:/c3750-i5-mz.122-20.SE4/
　　（3）将IOS从Flash复制到tftp
　　SW-A-02(3750-2)#copy flash: tftp:
　　Source filename []? c3750-i5-mz.122-20.SE4
　　Address or name of remote host []? 192.168.100.101
　　Destination filename [c3750-i5-mz.122-20.SE4]?
　　%Error reading flash:/c3750-i5-mz.122-20.SE4 (Is a directory)
　　复制失败，无法复制文件夹
　　SW-A-02(3750-2)#cd c3750-i5-mz.122-20.SE4
　　SW-A-02(3750-2)#dir
　　Directory of flash:/c3750-i5-mz.122-20.SE4/
　　4  drwx        2688   Mar 1 1993 08:16:56 +08:00  html
　　86  -rwx     5044988   Mar 1 1993 08:19:14 +08:00  c3750-i5-mz.122-20.SE4.bin
　　87  -rwx         494   Mar 1 1993 08:19:14 +08:00  info
　　15998976 bytes total (7386112 bytes free)
　　SW-A-02(3750-2)#copy flash: tftp:
　　Source filename [/c3750-i5-mz.122-20.SE4/c3750-i5-mz.122-20.SE4.bin]?
　　Address or name of remote host []?  192.168.100.101
　　Destination filename [/c3750-i5-mz.122-20.SE4/c3750-i5-mz.122-20.SE4.bin]?
　　.....
　　%Error opening tftp:// 192.168.100.101//c3750-i5-mz.122-20.SE4/c3750-i5-mz.122-20.SE4.bin (Timed out)
　　复制ios文件仍然失败，关闭掉笔记本上的防火墙后，复制正常。
　　SW-A-02(3750-2)#copy flash: tftp:
　　Source filename [/c3750-i5-mz.122-20.SE4/c3750-i5-mz.122-20.SE4.bin]?
　　Address or name of remote host []? 192.168.100.101
　　Destination filename [/c3750-i5-mz.122-20.SE4/c3750-i5-mz.122-20.SE4.bin]?
　　!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
　　!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
　　!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
　　!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
　　!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
　　!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
　　5044988 bytes copied in 13.916 secs (362531 bytes/sec)
　　二、更新新交换机上的IOS
　　1、为了以防万一，先将该交换机的IOS备份（方法与上述方式相同）；
　　Switch#show flash
　　Directory of flash:/
　　3  -rwx    11518717   Mar 4 2010 07:05:23 +00:00  c3750-ipservices-mz.122-50.SE3.bin
　　4  -rwx        2072   Mar 1 1993 00:03:07 +00:00  multiple-fs
　　15998976 bytes total (4476416 bytes free)
　　Switch#show boot
　　BOOT path-list      : flash:c3750-ipservices-mz.122-50.SE3.bin
　　Config file         : flash:/config.text
　　Private Config file : flash:/private-config.text
　　Enable Break        : no
　　Manual Boot         : no
　　HELPER path-list    :
　　Auto upgrade        : yes
　　Auto upgrade path   :
　　Timeout for Config
　　Download:    0 seconds
　　Config Download
　　via DHCP:       disabled (next boot: disabled)
　　Switch#copy flash: tftp:
　　Source filename []? c3750-ipservices-mz.122-50.SE3.bin
　　Address or name of remote host []? 192.168.100.101
　　Destination filename [c3750-ipservices-mz.122-50.SE3.bin]?
　　!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
　　11518717 bytes copied in 31.868 secs (361451 bytes/sec)
　　2、删除以前的IOS
　　Switch#delete flash:c3750-ipservices-mz.122-50.SE3.bin
　　Delete filename [c3750-ipservices-mz.122-50.SE3.bin]?
　　Delete flash:c3750-ipservices-mz.122-50.SE3.bin? [confirm]
　　Switch#show flash
　　Directory of flash:/
　　4  -rwx        2072   Mar 1 1993 00:03:07 +00:00  multiple-fs
　　15998976 bytes total (15995392 bytes free)
　　3、上传新的IOS
　　Switch#copy tftp: flash:
　　Address or name of remote host []? 192.168.100.101
　　Source filename []? c3750-i5-mz.122-20.SE4/c3750-i5-mz.122-20.SE4.bin
　　Destination filename [c3750-i5-mz.122-20.SE4.bin]?
　　Accessing tftp://192.168.100.101/c3750-i5-mz.122-20.SE4/c3750-i5-mz.122-20.SE4.bin...
　　Loading c3750-i5-mz.122-20.SE4/c3750-i5-mz.122-20.SE4.bin from 192.168.100.101 (via GigabitEthernet1/0/24): !!!!!!!!!!!!!!!!!!!!
　　[OK - 5044988 bytes]
　　5044988 bytes copied in 114.010 secs (44250 bytes/sec)
　　4、更改IOS启动顺序
　　Switch#show boot
　　BOOT path-list      : flash:c3750-ipservices-mz.122-50.SE3.bin
　　Config file         : flash:/config.text
　　Private Config file : flash:/private-config.text
　　Enable Break        : no
　　Manual Boot         : no
　　HELPER path-list    :
　　Auto upgrade        : yes
　　Auto upgrade path   :
　　Timeout for Config
　　Download:    0 seconds
　　Config Download
　　via DHCP:       disabled (next boot: disabled)
　　Switch#config t
　　Enter configuration commands, one per line.  End with CNTL/Z.
　　Switch(config)#boot system flash:c3750-i5-mz.122-20.SE4.bin
　　Switch#show boot
　　*Mar  1 00:17:10.775: %SYS-5-CONFIG_I: Configured from console by console
　　BOOT path-list      : flash:c3750-i5-mz.122-20.SE4.bin
　　Config file         : flash:/config.text
　　Private Config file : flash:/private-config.text
　　Enable Break        : no
　　Manual Boot         : no
　　HELPER path-list    :
　　Auto upgrade        : yes
　　Auto upgrade path   :
　　Timeout for Config
　　Download:    0 seconds
　　Config Download
　　via DHCP:       disabled (next boot: disabled)
　　5、保存后重启交换机
　　Switch#write
　　Building configuration...
　　[OK]
　　Switch#reload

　　Proceed with>