Cisco IOS Images 12.4/15.x Collection Its always better to use latest IOS versions, as they provide full command support. If you can’t buy original routers and switches, GNS3 is your rescue. Although nothing beats practicing on original equipment but if anything stands close to original gear, that is GNS3. You can download latest GNS3 Network Emulator from gns3 website. It is a free-ware software. IOS 15.x – Only the c7200 series get newer IOS 15 images. All other platforms are now end-of-life and only support IOS 12.4.
Please note that the IOSv appliance is based on IOS 15 and there are IOU (IOS on UNIX) images with IOS 15. IOS 1700: IOS 26xx: IOS 36xx: IOS 37xx:.
![Iou Iou](http://www.routingloops.co.uk/wp-content/uploads/2014/10/Upload-Form-for-GNS3-server-1.0beta4.dev1-Mozilla-Firefox_019.png)
![Cisco 3750 Switch Ios For Gns3 Iou Login Cisco 3750 Switch Ios For Gns3 Iou Login](/uploads/1/2/5/4/125423624/742334962.png)
Feb 15, 2015 www.ConfigurationDepot.com - Howto guide on performing a password recovery for Cisco switch 2900xl/3500xl, 2940, 2950/2955, 2960, 2970, 3550, 3560, and 3750. I found this.vmdk from here Layer 2 switches with full IOS in GNS3 - Nathan Ash, What would be the difference between that IOS and one IOU? How to Connect Cisco IOU to GNS3. Junos version= JunOS Olive 12.1 VM image. 3750 ios free cisco 7200 ios image for gns3.