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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.

Download 3640 Switch IOS image for Gns3| 3600 Series: GNS3 is network simulator and offers number of ways to emulate Cisco Image or other IOS. The closest to a switch running in GNS3 would be IOU. In regards to obtaining router IOS software the only legitimate way to get an image is from Cisco.

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 you can learn it from given link. 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 With this IOS you can use the following Slot in GNS3 as shown in figure. 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.

So long ago GNS3 was released and well it was lacking a few features and in my experience quite buggy. However now after a successful kickstarter campaign (which I backed!) they have released v1.x.x Now up to 1.3.6 I will share some of my experience and tips, tricks, etc. Originally (and now) layer 2 switches were somewhat difficult to get going in GNS3. But now thanks to vIOS and the great team behind GNS3 and Qemu it’s easy! At this point I assume you have GNS3 installed and working (I am using 1.3. 6 in this tutorial) Firstly you are going to need the vdk, now normally you have to extract it from an all in one image, however because I’m awesome and outlawish I will provide it for you here. You will need to extract it. Once extracted fire up GNS3.

• Go into preferences (view > Preferences) and click on Qemu VM’s, click New • Select iOSv-L2 from the drop-down list and click next. • Name it whatever you like L2-Switch works great, click next. • Select the latest Qemu binary from the list (if you are running 64bit OS I suggest this one).

• Now the important part, find the vIOS-L2.vmdk that you downloaded from here and extracted. Click finish. • You now have a L2 switch with 8 ethernet ports in you Qemu VM’s list! • Start her up and console in, it will take a while to boot and remember you can’t cable anything to it unless its powered off.

You may see some errors whilst booting but it should be fine. And that’s it! You can create as many as you like (as long as you got the RAM, Qemu is a bit of a hog). I will post how to get a layer 3 switch, an ASA AND I will do a basic getting started with GNS3 tutorial. If you like it, share it! Show some love This article was viewed (63558) times!