how to recover cisco router from rommon mode

This means now the configuration is running in RAM. Now, copy the running-configuration(RAM) to startup-configuration (NVRAM).Answering No to it, we will enter the user mode and by typing enable in user mode, we will enter privilege mode. Simply reload the router by typing reset in ROMMON mode.Īfter reloading the router, the router will ask to use setup mode.

Therefore, changing the value to 0x2142, startup-configuration is bypass and will enter into setup mode. Now, Change the configuration register value to 0x2142.Īs already learned that by turning on 6th bit, we can ignore the startup-configuration contents.Note : The Ctrl+break key combination will work only if connected to router via COM1. Because we don’t want the old startup-configuration to load as the enable or secret password is not available. Boot the router and interrupt the boot sequence by pressing Ctrl + Break key combination.īy pressing this combination, the ROM monitor mode will be seen as shown in the figure.Difference between Private and Public IP addresses.Difference between Synchronous and Asynchronous Transmission.nslookup command in Linux with Examples.Implementation of Diffie-Hellman Algorithm.Transmission Modes in Computer Networks (Simplex, Half-Duplex and Full-Duplex).Types of area networks - LAN, MAN and WAN.Network Devices (Hub, Repeater, Bridge, Switch, Router, Gateways and Brouter).ISRO CS Syllabus for Scientist/Engineer Exam.ISRO CS Original Papers and Official Keys.GATE CS Original Papers and Official Keys.

How to recover cisco router from rommon mode