HOW to install ios in cisco router

HOW to install ios in cisco router

If you are searching help for installing ios in your cisco router. Be happy you searching is finish now. After complete reading of this article you will certainly know how to install ios in cisco router. If router has no ios, or corrupted ios, you will get following prompt as you start router. Since ios is unavailable rommon will be prompted to install ios or recover backup files in the time of disaster moment.

rommon 1 >

Installing ios is the game of just few command on rommon mode but before executing the commands you need to setup router with tftp server. To setup your router with your Desktop or Laptop and follow the steps.

Step 1: Connect your Router with PC physically using Ethernet cable and console cable.

Note: Console cable provides you interface to configure router and your ios will transmit from your PC to router through ethernet cable, thus, both cables attachment is compulsory.

Step 2: Install tftp server on your PC, you can download it from here

once you have installed tftp server on the computer, follow the next step.

Step 3: copy your ios in following location : C:\Program Files\Cisco Systems\Cisco TFTP Server

Step 4 : Assign IP , subnet mask and default gateway on your PC

Assume I assign IP address 192.168.1.1, subnet mask 255.255.255.0 and default gateway 192.168.1.2. If you assigned IP etc, now it is time to execute command on rommon mode:

rommon 1 > IP_ADDRESS=192.168.1.2

(This is default gateway address, you assigned on your PC.)

rommon 2 > IP_SUBNET_MASK=255.255.255.0

(The same subnet mask, you assigned on your PC.)

rommon 3 > DEFAULT_GATEWAY=192.168.1.2

(The same address)

rommon 4 > TFTP_SERVER=192.168.1.1

(your PC IP address)

rommon 5 > TFTP_FILE=c2600-i-mz.122-28.bin

(Your ios filename with extention)

rommon 6 > tftpdnld

(in lowercase)

When you press enter the following information will be displayed

IP_ADDRESS: 192.168.1.2
IP_SUBNET_MASK: 255.255.255.0
DEFAULT_GATEWAY: 192.168.1.2
TFTP_SERVER: 192.168.1.1
TFTP_FILE: c2600-i-mz.122-28.bin

Invoke this command for disaster recovery only.
WARNING: all existing data in all partitions on flash will be lost!

Do you wish to continue? y/n:  [n]:

Press y to continue, when you press y you will see process of copying file from tftp server (Your pc) to your router. such like this.

Receiving c2600-i-mz.122-28.bin from 192.168.1.1 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

I hope You would have enjoyed this article.

Thank you !