Jan 16, 2020 GNS3 Supported Cisco Router IOS Images Download. GNS3 is more specific and professional than Cisco Packet Tracer. There is no need to add any Cisco devices to the Packet Tracer, but it is absolutely necessary to download and add the Cisco IOS for GNS3. You need to use GNS3 to use the actual Router and Switch IOS images. Cisco IOS images are copyrighted, you need a CCO log on to the Cisco website (free) and a contract to download them. There are others ways for getting them but advising you of that would be against Cisco's legal protection and I do a lot with Cisco and so will not suggest them.
Layer 3 IOS image for GNS3 with Switching
GNS3 is one of best and my favorite graphical network simulator use for simulating network topologies and network Labs virtually in your personal computer. So GNS3 provide you the economical way for testing your networking skills at home. For creating topologies in GNS3 you are required the Cisco real IOS images. You need to add these IOS image in GNS3 in order to simulate these IOS for Networking LABS. If you are new to GNS3 and not clear how to use the Cisco IOS with GNS3 you can learn it from given link. Also visit How to use GNS3 step by step.
3725 Switch IOS image
Currently GNS3 runs only the routers IOS images, these is not way for direct running of cisco 2900 series IOS images in GNS3. But you can create the switching labs with router IOS image in gns3 by using the NM-16ESW module with router which have the switching features. This NM-16ESW module can be used with Cisco 3700 series IOS.
From here you can download this IOS image for your GNS3. If you need the IOS image for your real router and for your company you need to contact with Cisco, from where you can purchase IOS of your choice. Also you can get Cisco Devices and IOS images from Cisco Partners, you can find the nearest local partner. There is a complete list of partners on Cisco.com.
(You may required to sing-in with Gmail to download)
With this IOS you can perform the different switching labs on GNS3, which are as following:
- VLANs
- STP
- VTP
- Inter-VLan
Cisco 3750 Firmware Download
With this IOS you can use the following Slot in GNS3 as shown in figure.
Cisco 3750 Ios Upgrade Procedure
I have used this 3725 Switch IOS image with latest GNS3 and find no issue with it. You are request to share your experience in case of any problem with this 3725 switch IOS image. Thank you for reading this post, have a good day.. Bye… J