wordpress外贸网站建站教程,鹤壁市城乡一体化示范区网站,网站抽奖模板,wordpress 时尚网实验5: IOS的升级与恢复 实验目的通过本实验可以掌握 1) 掌握IOS 正常的情况下升级IOS2) IOS 丢失的情况下使用TFTP恢复IOS3) IOS 丢失的情况下使用Xmodem恢复IOS 拓扑结构 实验步骤n IOS 正常的情况下升级IOS (TFTP)Router#conf t //进… 实验5: IOS的升级与恢复 实验目的通过本实验可以掌握 1) 掌握IOS 正常的情况下升级IOS2) IOS 丢失的情况下使用TFTP恢复IOS3) IOS 丢失的情况下使用Xmodem恢复IOS 拓扑结构 实验步骤n IOS 正常的情况下升级IOS (TFTP)Router#conf t //进入配置模式Enter configuration commands, one per line. End with CNTL/Z.Router(config)#int f0/0 //进入接口Router(config-if)#ip add 1.1.1.1 255.255.255.0 //配置 IP 地址Router(config-if)#no shut //启用接口Router(config-if)#end //退到特权模式Router#copy tftp: flash: //从 tftp 服务器拷贝 flashAddress or name of remote host []? 1.1.1.2 //指定服务器地址Source filename []? c2600-d-mz.122-1.binDestination filename [c2600-d-mz.122-1.bin]? Loading c2600-d-mz.122-1.bin from 1.1.1.2: !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!![OK - 50938004 bytes]n IOS 丢失的情况下使用TFTP恢复IOS1) 通过tftpdnld命令升级IOSrommon 3 IP_ADDRESS10.32.10.1 路由器的ip地址rommon 4 IP_SUBNET_MASK255.255.255.0 路由器的掩码rommon 5 DEFAULT_GATEWAY10.32.10.32 缺省网关是pc机的iprommon 6 TFTP_SERVER10.32.10.32 是pc机的ip地址rommon 7 TFTP_FILEC2600-I-MZ.122-11.BIN 上传ios文件的名称rommon 8 tftpdnld执行tftpdnld命令进行ios升级有时可能会报错或命令不执行这时只要用sync命令保存配置后重新启动路由器最好关掉电源再开机后再执行tftpdnld命令就可以了。rommon 9 tftpdnld传送文件出现提示选择yIP_ADDRESS 10.32.10.1IP_SUBNET_MASK 255.255.255.0DEFAULT_GATEWAY 10.32.10.32TFTP_SERVER 10.32.10.32TFTP_FILE C2600-I-MZ.122-11.BINInvoke this command for disaster recovery only.WARNING all existing data in all partitions on flash will be lostDo you wish to continue y/n [n] yReceiving C2600-I-MZ.122-11.BIN from 10.32.10.3…File reception completed.Copying file C2600-I-MZ.122-11.BIN to flash.Erasing flash at 0x607c0000ogram flash location 0x605b0000rommon 10 在rommon 13 提示符下键入reset或重新启动路由器power-cycle进入正常引导状态 2) IOS 丢失的情况下使用Xmodem恢复IOS通过Xmodem命令注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口灌进去的升级IOS具体步骤如下1、用Cisco原配的线缆连接路由器的console口与PC机的COM1使用PC机的超级终端软件访问路由器这时不需要对PC和路由器配置任何地址。2、在这个模式下输入Xmodem命令即 rommon 2 xmodem -c c2600-i-mz.122-11.bin-c是带校验c2600-i-mz.122-11.bin为存放在PC机上的IOS映像文件WARNING All existing data in bootflash will be lostInvoke this application only for disaster recovery.Do you wish to continue y/n [n] y Ready to receive file c2600-i-mz.122-11.bin …… 此时在超级终端的传送栏目 选择发送文件选项 再选择Xmodem 并指明IOS映像文件所在的路径按发送即开始上传IOS等待时间很长视IOS的大小和传输速度。Erasing flash at 0x607c0000program flash location 0x605b0000Download Complete传完以后对整个系统初始化 显示如下program load complete entry point 0x80008000 size 0x5b85e0Self decompressing the image [OK]…..注释Router采用这种方法时由于使用console口来传送速率为9600bps需要时间较长。因此可修改console口速率利用xmodem命令实现快速升级IOS.具体方法如下rommon 1 confreg 回车Configuration Summaryenabled areload rom after netboot failsconsole baud 9600boot image specified by the boot system commands or default to cisco2-C2600do you wish to change the configuration y/n [n] y 选择 yesenable diagnostic mode y/n [n] n 选择 noenable use net in IP brocast address y/n [n] n 选择 nodisable load rom after netboot fails y/n [n] n 选择 noenable use all zero broadcast y/n [n] n 选择 noenable break/abort has effect y/n [n] n 选择 noenable ignore system config info y/n [n] n 选择 nochange console baud rate y/n [n] y 选择 yesenter rate 0 9600 1 4800 2 1200 3 2400 4 19200 5 38400 6 57600 7 115200 [0] 7 选择 7用最大的11520速率的xmodem传输change the boot characteristics y/n [n] n 选择 noConfiguration Summaryenabled areload rom after netboot failsconsole baud 115200boot image specified by the boot system commandsor default to cisco2-C2600do you wish to change the configuration y/n [n] n 选择 noYou must reset or power cycle for new config to take effect注释reset 回车注意在按reset键前需要修改串口速度我的电脑--端口属性--串口速度调为115200然后再修改超级终端里设置速率为115200记住一定要这么做否则会出现乱码 然后关闭这个超级终端重新建立一个超级终端连接重新启动系统后出现rommon 1 提示符然后输入rommon 1 xmodem -rDo not start the sending program yet……Invoke this application only for disaster recovery.Do you wish to continue y/n [n] y 选择 yesReady to receive file ……注释此时在超级终端的菜单上的“传送”--“发送文件”--选择IOS映像文件所在地以及选择使用“xmodem”协议点击“发送”即可。等待10-20分钟左右就可升级完3-6M的IOS文件待升级完成后请记住修改回计算机串口与超级终端、路由器confreg下的xmodem等传输速率为9600bps.方法如下Routeren 进入新IOS的特权模式Router#reload 重启系统Proceed with reload [confirm] 回车000104 %SYS-5-RELOAD Reload requested System Bootstrap Version 11.32XA4 RELEASE SOFTWARE fc1Copyright c 1999 by cisco Systems Inc.TACHomeSWIOSSpecials for info PC 0xfff0a530 Vector 0x500 SP 0x680127b0 C2600 platform with 24576 Kbytes of main memory PC 0xfff0a530 Vector 0x500 SP 0x8000468 monitor command boot aborted due to user interrupt30秒内按ctrlbreak键rommon 1 confreg 输入“confreg”命令Configuration Summaryenabled areload rom after netboot failsconsole baud 115200boot image specified by the boot system commands or default to cisco2-C2600do you wish to change the configuration y/n [n] y 选择 yesenable diagnostic mode y/n [n] n 选择 noenable use nn IP brocast address y/n [n] n 选择 nodisable load rom after netboot fails y/n [n] n 选择 noenable use all zero broadcast y/n [n] n 选择 noenable break/abort has effect y/n [n] n 选择 noenable ignore system config info y/n [n] n 选择 nochange console baud rate y/n [n] y 选择 yesenter rate 0 9600 1 4800 2 1200 3 2400 4 19200 5 38400 6 57600 7 115200 [7] 0 选择 0改回用标准速率速率9600的xmodem传输change the boot characteristics y/n [n] n 选择 noConfiguration Summaryenabled areload rom after netboot failsconsole baud 9600boot image specified by the boot system commands or default to cisco2-C2600do you wish to change the configuration y/n [n] n You must reset or power cycle for new config to take effectrommon 2 此时手工改回计算机串口与超级终端2者传输速率为9600然后敲入rommon 2 reset最好关掉电源后重新启动。利用xmodem命令实现路由器IOS升级速度较慢往往等上很长时间为了快速升级可以采用下列方法。 转载于:https://www.cnblogs.com/zhongguiyao/p/8011923.html
