The most common way of obtaining IOS identification information is by using the show version command. As shown in this example, the router is currently booting IOS Version 12.3(25) Following the feature set being loaded you can also see the Version of the IOS. Turn your attention to line 2 where you see C3620-IK9O3S7-M this displays the features that are included in the image and the loading type (which will be discussed later) for the image that is currently be loaded by the Router. Cisco Internetwork Operating System Software Provided below is an example of the required dispatch from the boot process which can be used to identify which IOS Version and Feature Sets the router is currently loading. First way being to examine the boot dispatch, this will display the image name that is loaded from flash which in return can be used to identify the IOS Version and Feature Set of the image. There are several ways to identify which Cisco IOS your Cisco device is running. Identify what IOS Version and Features Set your Cisco device is currently running.Complete Lab 1.2 before attempting this lab or have a current Cisco console session open to your Cisco device.Some feature sets contain the same features as others this will be discussed later in the lab.

In Cisco IOS, we have similar distributions called “Feature Sets” that dictate which features will be available for you to configure. Think of Feature Sets as Windows Vista Distributions, you have Basic, Home Edition, Home Premium, Business, Ultimate and Enterprise. Knowing what Cisco IOS Version and Feature Set is running on your Cisco devices is crucial to planning and deploying required features.

This lab will help you will identify the Cisco Internetwork Operating System (Cisco IOS) Running on a Cisco Device.

Cisco ios images