After some years, it's time again to prepare for my next CCNP re-certification. I was pleasantly surprised that running full-featured Cisco L2 images is now made entirely possible with the new 'IOS on Unix (IOU)' function on GNS3. I documented my new setup here according to the GNS3 v1.5.2 running on a Windows x64 host.

You'll need to get hold of the following files beforehand:

Working Cisco IOS for GNS3. Can you please provide the cisco 3750 ios image for gns3. Balamurali Ganeshapandy. Thanks for your support. Hands-on labs running real Cisco IOS Software - Cisco Learning Labs for CCNA and CCNP Students Hello guys, It is possible to extract IOSv (IOS 15.4) from 73110. The closest to a switch running in GNS3 would be IOU.

1. Running Cisco Catalyst Switch(CLI) on GNS3 using IOU (IOS on Unix) and VirtualBox. Running Cisco Catalyst Switch(CLI) on GNS3 using IOU (IOS on Unix) and VirtualBox. Running Cisco Switches on GNS3. April 6, 2016 May 9, 2016 ANJAN CHANDRA Catalyst Switch, Cisco. Mount the IOU image.
2. Cisco IOS on Unix, also known as Cisco IOU, is released for internal Cisco use only. IOU permits to run IOS natively on x86 platform while GNS3 must emulate the whole hardware. The big difference is that IOU can run more IOS instance than GNS3, but GNS3 can run real IOS version.

• Cisco IOU L2 and L3 images (by Googling)
• Cisco IOU license file iourc(see this forum discussion)

Once you have obtained the above files, you can now proceed with the following steps:

Gns3 Install Cisco Switch

1. Download and install the all-in-one GNS binaries from gns3.com
2. Download the GNS3 VM OVF image as well. Ensure that the version of both GNS server and the OVF image must match i.e. 1.5.2 in this case.
3. Download and install either VMWare Workstation Player or Oracle VirtualBox in your host.
4. Import the GNS3 VM OVF into either virtualization software and start running it. Ensure that at least one network interface is of NAT type (enabled by default)
5. Note down the IP address stated on the screen on the GNS3 VM.
6. Start GNS3 and go to Edit | Preferences
7. Edit the path to vmrun for VMWare or the path to VBoxManage for VirtualBox.
8. Go to Server | Remote Servers. Add the new remote server with the IP address noted in step 5 above. You should see something similar as follows:
9. Click on IOS on Unix. Edit to the path to the iourc license file that you have prepared. Click the Apply button.
10. Click on the IOU Devices below it. Click the New button.
11. Add the L3 and L2 devices by browsing to the IOU image files that you have downloaded beforehand.
12. Drag and drop the new devices that you just added. Test out the L2 commands (e.g. switchport, spanning-tree etc) on the consoles.

Cisco 3750 Switch Ios For Gns3 Iou Images Windows 10

Note: if you are unable to start the new IOU devices, you may need to modify the hostname on your GNS3 VM according to your iourc file content. For example:

gns3@gns3-vm~#sudo hostnamectl set-hostname gns3-iouvm

Gns3 Add Cisco Switch

gns3@gns3-vm~#bash