Jan 07, 2016 Download Cisco IOS image for GNS3 Hi dear all, that’s really a great to share my hard work with you, After a lots of hit in Google I finally found trick to search Cisco IOS in free of course. So without talking much here are the link where you can free download Cisco ios image and you. 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.
One of the most commonly used software to prepare for the Cisco exams is GNS3. To use network devices such as Router, Switch on the GNS3 emulator, you must download Cisco images.
Cisco Ios Image
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. With this software, you can emulate a Cisco Router/Switch and prepare for Cisco exams in a more professional way.
You can download and use the most suitable Cisco images to avoid problems when using the network simulator. You can also check out this article to install GNS3 on your computer.
You also need to configure Minimum RAM when adding a Cisco Router or Switch images to the program.
If you set a value that is greater than the minimum RAM requirement, you will put more load on your computer’s processor and experience performance issues.
If you have a powerful PC, you can also set a higher RAM value for Cisco Routers.
When adding a Router to the simulator software, an IDLE-PC value is also determined. The IDLE-PC value is determined by the hardware specifications of your computer so that the routers you add can work more efficiently.
The running IOS images you can use on GNS3 are the c3640, c3660, c3725, c3745, and c7200 versions.
Here are a few additional Cisco Router images. For example, if you use a c1700 series Router, it will be insufficient because it does not support some features when you create a more advanced network topology.
Download Router Image for GNS3
You can download Router images for GNS3 by clicking on the links in the table below.
|Model||IOS Version||File Name||Minimum RAM||Link|
How to Add Router Image ⇒ Video
After downloading one of the iOS images to your computer, you can watch the video below to add the image file to the Graphical Network Simulator-3 and also subscribe to our YouTube channel to support us!
In this article, we have shared the most appropriate Cisco images for you. These images have been used and tested on various projects. Thanks for following us!
♦ How to Change the Name of Router
♦ How to Assing IP Address to Router
♦ How to Add Router to GNS3
♦ How to Configure Router
♦ How to Configure Switch
I struggled quite a lot of get ASA 8.4 working on GNS3. I had 8.0(2) working and was helping to test the configurations and VPNs but now wanted to get 8.4 running such that I can prepare myself for new NAT statements and migration from 8.0(2) to 8.4(2).
Here are the steps to get it working. All links to any images or keys are removed for legal reasons. Once its gone its gone.
Download the ASA 8.4 files for GNS3 from the following address
I am afraid you will have to search google for reputable sources to get firewall ASA842 image. Please dont ask here for the image.
2. Configure GNS3 as following. ( I am using Ver 0.8.2 Beta 2, Also Tested 8.3 with Windows 7 64 bit which worked without any issues). Type the code below into relevant fields
Qemu Options: -vnc none -vga none -m 1024 -icount auto -hdachs 980,16,32
Kernel cmd line: -append ide_generic.probe_mask=0x01 ide_core.chs=0.0:980,16,32 auto nousb console=ttyS0,9600 bigphysarea=65536
Once the firewall is up and running use following activation keys
Again the activation keys are in public domain so get it using your search capabilities.
It will take a while (10-15 min) to accept the second activation key and will take the same time at first reboot.
That's all done and we have a working firewall to play with.
Now if you want to run two ASAs, you will have to change the Qemu options on the second firewall as below
Qemu Options: -vnc :2 none -vga none -m 1024 -icount auto -hdachs 980,16,32
Please check the comments at the end of post where you will find different ways to resolve issues if you face any. Specially very helpfull comments from GD and are detailed below
Cisco Ios Images
After you have ASA running in GNS and want to play with ASDM, here is the guide to follow
Free Cisco Ios Image Download
and if you want to connect two GNS3 networks running on two different PCs, use following
Download Cisco Ios Images Free
I have posted a LAB Guide for migrating NAT from 8.2 to 8.3/8.4 Version, which is still work in progress but has a lot of stuff already added into it