After installing the GNS3 program, follow the steps below to add a new Router / Switch IOS image.

After running GNS3, the first opening of the program is as follows. Select Local Server in the Setup Wizard window. After selecting the Local Server option, click the “Next” button.

GNS3 is network simulator and offers number of ways to emulate Cisco Image or other IOS. YOu can run different Cisco IOS images in gns3 with Dynamips. In Gns3 by default there is no way of running Cisco switch, but using Cisco 3640 IOS image you can convert your router into switch. In the new GNS3 1.4, there is a way to run a second category of switches and routers. These are classified as Routing and Switching virtual machines (or R+Svms) for short. Differences between IOS images and R+Svms.

To add a Cisco Router IOS image, select “Add an IOS Router using a real IOS image” from the “Add virtual machines” page.

Cisco Ios Switch Images For Gns3

In the IOS images window, click the “Browse” button on the “IOS image” page to add the Router image.

In the “Select an IOS image” window that opens, select an IOS image that you downloaded to your computer and click the “Open” button. You can download the cisco image here.

On the “IOS image” page, click the “Yes” button to copy the router IOS image to the default location. After adding the IOS image, click the “Next” button.

On the “Name and platform” page, select the Cisco Router platform and click the “Next” button.

In the “Memory” page, you can configure how much RAM the Cisco Router will use in this window. Continue by clicking the “Next” button to accept the default 512 MB RAM value.

You can add interfaces for the Router on the “Network Adapters” page. Select the “FastEthernet” interface configured by default and click the “Next” button.

Cisco Genuine Ios File For Gns3

You must adjust the IDLE-PC value so that it does not affect the performance of your computer while the Cisco Router is running. Press the Idle-PC Finder button to adjust the optimum value.

Calculating Idle-PC value for router image.

After finding the most suitable Idle-PC value for the router, click the “OK” button.

Click the “Finish” button to continue the IOS addition process.

It gives information about the Router image you added in the “IOS Router Templates” window. Just click the “OK” button to close this window.

In the new project creation window, after configuring the project name and location, click the “OK” button.

After our Cisco IOS image has been successfully added, drag and drop the c7200 Router from the left section to the workspace.

After running the router, you can see the IOS image version from the image below.

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.

Cisco Ios Switch Gns3 Setup

3725 Switch IOS image

Cisco Switch Ios Images For Gns3 Free Download

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)

Cisco Ios Switch Gns3 Software

With this IOS you can perform the different switching labs on GNS3, which are as following:

Cisco 3745 Switch Ios Image Gns3

• VLANs
• STP
• VTP
• Inter-VLan

With this IOS you can use the following Slot in GNS3 as shown in figure.

Cisco Ios Switch Gns3 Password

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