详细请点击:http://www.verydemo.com/demo_c92_i61059.html
如果您的路由器的flash因为意外丢失了IOS,您可以在ROM monitor commands模式下通过如下两种办法恢复:1) xmodem―Use this if the computer attached to your console has a terminal emulator that has xmodem capability.
2) tftpdnld―Use this if you have a TFTP server directly connected to the Ethernet 0 port.Using the xmodem Command
The xmodem command establishes a connection between a console and the router console port for disaster recovery if both the boot and system images are erased from Flash memory.
xmodem [filename]―Establishes an xmodem connection between the console and the router. The optional parameter filename specifies the source file containing the Cisco IOS image.
Other options include the following:
・-c―use cyclic redundancy check (CRC-16)
・-y―use Ymodem transfer protocol
・-r―copy the image to DRAM for launch
・-x―do not launch image on completion of downloadUsing the tftpdnld Command
The tftpdnld command downloads a Cisco IOS software image from a remote server into Flash memory using TFTP.
....................................................................
The following variables are required:
・IP_ADDRESS―The IP address for the router you are using.
・IP_SUBNET_MASK―The subnet mask for the router you are using.
・DEFAULT_GATEWAY―The default gateway for the router you are using.
・TFTP_SERVER―The IP address of the server from which you want to download the image file.
・TFTP_FILE―The name of the file that you want to download.
・The following variables are optional:
・TFTP_VERBOSE―Print setting. 0=quiet, 1=progress, 2=verbose. The default is 1.
・TFTP_RETRY_COUNT―Retry count for ARP and TFTP. The default is 7.
・TFTP_TIMEOUT―Overall timeout of the download operation in seconds. The default is 2400 seconds.
・TFTP_CHECKSUM―Performs a checksum test on the image. 0=no, 1=yes. The default is 1.
The syntax for specifying the variables is:
VARIABLE_NAME=valueAfter you specify the variables, you must reenter the tftpdnld command. For example:
rommon 1 》 tftpdnldrommon 2 》 IP_ADDRESS=172.15.19.11rommon 3 》 IP_SUBNET_MASK=255.255.255.0rommon 4 》 DEFAULT_GATEWAY=172.15.19.1rommon 5 》 TFTP_SERVER=172.15.20.10rommon 6 》 TFTP_FILE=/tftpboot/c2600-i-mzrommon 7 》 TFTP_VERBOSE=1rommon 8 》 tftpdnld
IP_ADDRESS=172.15.19.11
IP_SUBNET_MASK=255.255.255.0
DEFAULT_GATEWAY=172.15.19.1
TFTP_SERVER=172.15.20.10
TFTP_FILE=/tftpboot/2600-i-mz
TFTP_VERBOSE=1Invoke this command for disaster recovery only.
WARNING: all existing data in flash will be lost!
Do you wish to continue? y/n: [n]:Enter y to begin downloading the Cisco IOS software image. When the process is complete, the ROM monitor mode prompt displays on your screen.
相关推荐
网络安全技术- CiscoIOS-12 路由器上telnet路由器.mp3
网络安全技术- CiscoIOS-01 路由器组件.mp3
网络安全技术- CiscoIOS-05 更改路由器图标.mp3
网络安全技术- CiscoIOS-08 设置路由器允许telnet.mp3
网络安全技术- CiscoIOS-13 配置路由器进行域名解析.mp3
网络安全技术- CiscoIOS-10 使用CRTtelnet到路由器.mp3
网络安全技术- CiscoIOS-07 让计算机连接路由器.mp3
网络安全技术- CiscoIOS-02 通过console配置路由器.mp3
网络安全技术- CiscoIOS-04 配置路由器的以太网接口和广域网接口.mp3
课程三与实验一、CISCO路由器操作与配置CiscoIOS.pptx
CiscoIOS灾难恢复重灌.pdf
CiscoIOS基本命令 CiscoIOS基本命令CiscoIOS基本命令CiscoIOS基本命令CiscoIOS基本命令CiscoIOS基本命令CiscoIOS基本命令
在CiscoIOS中配置IPv6防火墙案例教程.docx
Cisco 思科 1921 路由器 IOS c1900-universalk9-mz.SPA.157-3.M7.rar 官网下载
CiscoIOS基础.pdf
CISCOIOS技术基础.pptx
CiscoIOS权限等级.pdf
共十六章 包含所有的ciscoIOS配置,如NAT 、BGP 、RIP、 OSPF、 HSRP、DHCP、ACL等等。 绝对值得下载!!!
CISCOIOS技术基础演练.pptx