Chapter 3 Starting and Configuring the Router
Performing Other Configuration Tasks
Using this command saves the configuration settings that you created in the router using configuration mode and the setup facility. If you fail to do this, your configuration will be lost the next time you reload the router.
Performing Other Configuration Tasks
To make advanced configuration changes after you establish the basic startup configuration for your router, refer to the modular configuration and modular command reference publications in the Cisco IOS software configuration documentation set that corresponds to the software release installed on your Cisco hardware. These publications contain additional information on using the configure command.
The configuration publications also provide information about the following tasks:
•Understanding and working with the user interface on your router
•Booting and rebooting the router
•Setting the configuration register
•Loading configuration files or system images using remote copy protocol (rcp) or Trivial File Transfer Protocol (TFTP)
•Reloading the operating system
Upgrading ROMmon on the Cisco 7201
Upgrading the rewriteable ROM monitor (ROMmon) allows you to download a new ROMmon image instead of having to replace hardware (Cisco 7201) to get a new image.
There are two ROMmon images: the ReadOnly image that ships with your system (and is always available if you have Cisco 7201 hardware EPROM Version 1.4 and software C7201:Rommon version is 12.3(4r)T2 or later), and the upgradable ROMmon image that is downloaded from a specified TFTP file location. You can choose to configure the system to point to the upgradable ROMmon image. At bootup, the system starts with the ReadOnly image and then, if configured, jumps to the upgradable ROMmon image. If the upgradable ROMmon image fails to boot, the router marks this ROMmon image as invalid and reverts to the ReadOnly ROMmon image.
The first time a new ROMmon image is executed, you must allow the system to boot ROMmon before doing any additional resets or power cycling. If the
Note The ROMmon upgradable image is marked as invalid if it fails to boot. Do not reset the router when it is doing an initial bootup.
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