how to recover cisco router from rommon mode

Serial ports and Ethernet ports are used to directly connect Cisco routers to other network devices. You would not use a serial port to manage a Cisco router in-band. Because ROMmon is an out-of-band management method, it can be used to recover system software images, passwords, or other configuration data even when the router or switch is in a state where it can no longer forward packets.

ROMmon is a management mode that Cisco routers and switches revert to when the system cannot find a software image, the software image is corrupted, or the configuration register has been set to manually enter ROMmon mode. Cisco switches either do not have AUX ports or do not support certain features, such as system recovery, on their AUX ports if they have them. The AUX port on a Cisco router is typically capable of supporting most of the features available on a console port.

You are most likely to use either an AUX port or a console port to manage a Cisco router out-of-band, such as when the router is in read-only memory (ROM) monitor (ROMmon) mode. You would not use a console port or an auxiliary (AUX) port to manage a Cisco router in-band. The use of VTY lines typically allows multiple administrators or management applications to concurrently access a device from more than one location. When a Cisco device is operating in its normal state, another device can connect to it by using VTY application protocols such as Telnet or Secure Shell (SSH). Which of the following is typically used to manage a Cisco router in-band? (Select the best answer.)Ī virtual terminal (VTY) port is typically used to manage a Cisco router in-band.

How to recover cisco router from rommon mode