How do I boot from Rommon mode?
How do I boot from Rommon mode?
Now let us look at the procedure in detail. To manually boot into the ROMmon mode, you will need to reboot the device and break the boot sequence. Pressing the Ctrl+Break key combination during boot usually does this.
How do I boot a Cisco router into Rommon?
Press break on the terminal keyboard within 1 minute of power up in order to the router into ROMmon. Enter in confreg 0x2142 at the rommon 1> prompot in order to boot the from Flash. Type reset at the rommon 2> prompt. Type no after each setup question or press Ctrl+C to bypass all questions.
How do I get out of Cisco Rommon mode?
These are three ways the router can enter ROM Monitor (ROMmon) mode (rommon#>):
- Reload, initialize, or power cycle the router with the configuration register boot field set to 0.
- Reload, initialize, or power cycle the router without having a Cisco IOS Software image to boot from.
How do I load IOS from TFTP server in Rommon mode?
The image should be placed inside the TFTP working directory. A TFTP server needs to be running on the network from where the router can get the IOS image. The PC on which you are operating and the router should be connected to the same network. You will need to connect to the router using the console port.
How do you enter Rommon mode on a Cisco switch?
If the switch continuously reboots, press Control-C to prevent autoboot and to get into ROMmon mode.
How do I change the configuration register in Rommon mode?
This can be done both in Rommon mode and in configuration mode. In Rommon mode, it can be change with “confreg” command. Below, we are changing Configuration Register as 0x2142. After this configurationi we should reset the router to use this new value,or to force the router boot through this config register.
How configure config register in ROMmon?
There are two way to change Config Register on a router. This can be done both in Rommon mode and in configuration mode. In Rommon mode, it can be change with “confreg” command. Below, we are changing Configuration Register as 0x2142.