![]() ![]() The image should be placed inside the TFTP working directory. You will need have a valid Cisco IOS image which is to be loaded in the Flash of the router.Before going to the requirements, let’s go through the Router connections. Tftpdnld command runs in ROMmon mode and has some requirements before it can be executed. Confreg is the command for setting the correct register value.īut if you want to load a new IOS image in the router Flash, you will need the tftpdnld command for this purpose. You only need to set that register value in order to boot properly through the Flash image file. Most of the times ROMmon mode is activated if the configuration register of the Cisco router is not set. If you want to see which commands work in ROMmon mode, you can see them using the ? or help commands while inside ROMmon mode. ROMmon mode is a very basic mode where most of the IOS commands will not work. One of the more difficult tasks in configuring Cisco routers is when you have to copy the IOS image to Cisco Router from the ROMmon Mode.
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