Upgrading the Cisco IOS

Real World Application:

Common tasks between Cisco engineers as the new IOS image is usually released within 3 months, or upgrade the Cisco IOS device. New version includes bug fixes and new features into devices that are available. Upgrade the Cisco IOS on a router or switch is a Cisco network engineer has to know.

Lab Prerequisites:

• Loose-leaf book free CCNA guides R1 GNS3 lab topology.
• An active console sessions to R1
• A new Cisco IOS image is compatible with your Cisco device.
• TFTP server needs of the lab. You may need to download Solarwinds TFTP server and configure it again and try the lab.

Lab Objectives:

• If needed, download and install Solarwinds TFTP server.
• In the root directory of the TFTP server where the new Cisco IOS image file.
• Configure the TFTP server and Cisco devices can be in the same IP subnet, IE;10.1.1.1/24 10.1.1.2/24&
• Make sure that you have an Ethernet connection to your Cisco TFTP server that you are upgrading.
• New image file from the TFTP server to your Cisco device, you are prompted to erase the Flash memory.
• Once you copy the new Cisco IOS image in Flash memory devices, restart the device and verify that the upgrade was successful.

Lab Instruction:

Please note that the lab needs real Cisco routers or switches perform GNS3 is not loaded from the Flash image. You can perform this procedure on GNS3, but you will not be able to restart the device, and verify a successful upgrade.

As the latest IOS image release, at least once every three months to fix the bug and providing new features and enable a new device hardware upgrade Cisco Internetwork operating system on the device (IOS) is a very common practice.

First off you need to install and use the patch cable to the router, run from your PC or regular patch cable from the personal computer to the exchanger is running run the TFTP server on your PC.

To complete this lab's third goal will require the console session to a Cisco router or switch. Make sure that you want to specify the IP address of the Cisco devices is in the same subnet as the PC. In this lab, we'll use Cisco equipment PC 10.1.1.1/24 and 10.1.1.2/24. Goals require that you connect to your PC's Ethernet IP addresses that are configured on the interface. As shown in the following example, interface connected directly to the PC FastEthernet0/0;

Router con0 is now available

Press RETURN to get started.

Router>enable

Password: 

Router#configure terminal

Enter configuration commands, one per line.  End with CNTL/Z.

Router(config)#interface fastethernet 0/0

Router(config-if)#ip address 10.1.1.2 255.255.255.0

Router(config-if)#no shutdown

Router(config-if)#end

Router#

To ensure that you have the Cisco between the device and your computer can execute the ping command, the Ethernet connection as shown below.

Once you've verified that you then you are ready to copy the new image into Flash memory devices to your PC an IP connection. You achieve this goal by implementation of the copy TFTP Flash command in privileged mode. After you execute this command you will be prompted for the IP address of the TFTP server and you want to copy from the TFTP server to the Flash memory in the name of the image file.

Router#copy tftp flash

Address or name of remote host []? 10.1.1.1

Source filename []? c2600-adventerprisek9-mz.124-15.T11.bin

Destination filename [c2600-adventerprisek9-mz.124-15.T11.bin]?

Accessing tftp://10.1.1.1/c2600-adventerprisek9-mz.124-15.T11.bin...

Erase flash: before copying? [confirm]

Erasing the flash filesystem will remove all files! Continue? [confirm]

Erasing device... eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee ...erased

Erase of flash: complete

Loading c2600-adventerprisek9-mz.124-15.T11.bin from 10.1.1.1 (via FastEthernet0/0): 

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[OK - 34634180 bytes]

Verifying checksum... CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC OK (0x8E89)

34634180 bytes copied in 486.894 secs (71133 bytes/sec)

Router#