Updating cisco bootstrap
Next time I face some networking issue, I will probably start troubleshooting the physical layer first!
If you would like to know more about the IOS of the router, maybe how to recover a router from corrupt or missing software image, download it from a TFTP server or via Xmodem, or something else, feel free to leave your suggestions and comments.
If you ever face the situation in which your router (or switch) goes to ROMmon mode during the boot process, you should first check the value of the configuration register.
at the rommon As you can see from the output above, the configuration register is set to a value that forces the router to go into the ROMmon mode each time it is reloaded.
To solve this problem, you should change the value of the configuration register as shown below: So, if your router is stuck in ROMmon mode, you should know the value of your configuration register, based on which you can determine the router behavior and eventually solve the problem.
The problem in my case was that the router (Cisco 2650) could not boot – it went into ROMmon mode immediately upon starting it.
So my first, but wrong assumption was that there was something wrong with the IOS, so I decided to change it.