chinese dumps ccna

chinese dumps ccna.When copying files to flash, the flash is emptied before copying by default.In this example, the router points out that the image on the TFTP server has the same name as the image in flash memory and asks if you want to overwrite it. Also, note that the router prompts you that it will empty the flash memory - this is the default behavior of the IOS and will delete all files. If you do not want to empty the flash memory, answer the eyeAfter copying the IOS image to flash memory, to use this new image, you must reboot the router. However, the Cisco device loads the first valid IOS image in flash memory by default; to use another image, you must define the bootsystem command in the configuration (discussed in Chapter 15) and save it to the boot configuration file. The bootsystem commands in the boot configuration file are processed sequentially; if there are bootsystem commands that are no longer needed, you must remove them using the appropriate nobootsystem command (containing the old IOS image name). There are two ways to reboot the router: power off and power on again; execute the command reloado in privileged privileged EXEC mode The first method is a hard reboot, while the second method is a soft reboot.Video 16.06.A multimedia demonstration of loading an IOS image on the router is included in the companion digital resource to this book.If the router contains the wrong image, for example, a 3600 series image on a 2800 series router, the router will not boot. In this case, you will need to enter ROMMON mode and perform a TFTP boot or boot from the micro IOS in ROM (if available).When performing an upgrade, if you cannot access the remote server, an error message will appear. This may be because the server IP address you specified in the copy command is incorrect, or the specified IOS image name does not exist. The following example demonstrates this problem.Router# copy tftp://192.168.101.66/iosimage.binflash Destination filename [iosimage.bin]? Accessingtftp: //192.168.101.66/iosimage.bin... %Error openingtftp://192.168.101.66/iosimage.bin (Timedout)To back up an IOS image, use the command copyflash URL,To restore or upgrade an IOS image, use the command copy URL flasho command reload to restart the router. When upgrading, the CLI displays an error message if the server is unreachable or if the specified IP address or file name is incorrect.