Once you have a CCO account with download access you could download whatever you want. Previously it was possible to download just any IOS image from the Cisco website. When you buy a Cisco device nowadays it will include an IOS image that has all feature sets but you will have to unlock them. Instead of all these different IOS images there’s just one: We still have different IOS images depending on the model and version, but nu longer different IOS images with feature sets. Nowadays Cisco ships a universal image that has all feature sets included. Different models, feature sets and versions. This is how Cisco ended up with many different IOS images. Of course, the more feature sets the more expensive the IOS image will be… If you want voice features then you can buy the IOS image with just the voice feature set or one of the images on the right side that also has other feature sets. You can get the IP base image which has some basic features. This is an example of the different IOS images for one router model, let’s say the 1861. For example if you want to run a VPN you might require the “security features” or if you want to use your router for voice over IP you might need the “voice features”. Depening on the features you require you have to pay for a certain IOS image. To make things worse, there are also different IOS images for the different feature sets. For the 1841 there’s a separate IOS image and the 18E also share an IOS image. The 1801, 1802, 18 share a IOS image, so do the 18. You might think that there is one IOS image just for the “1800 series” but this is not the case. When you want a newer version you’ll have to download a new IOS image…there are no patches or bugfixes.Įver since Cisco was founded there has been an IOS image for each model, but there’s a different IOS image for the different versions of each model.įor example, the Cisco 1800 series integrated services router has the following models: This made installation very easy as you just download an image, copy it to your router or switch and configure your device to boot using the new image. Ever since Cisco created IOS, they shipped it as a single image file.
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