GNS3 is a network simulator tool that can use to prepare for Cisco Exams. Helps of this tool you can create your Cisco virtual Lab in this tool.
The GNS3 network simulator is free, open source software that can be downloaded and used by anyone.
GNS3 works by using real Cisco IOS images which are emulated using a program called Dynamips.
GNS3 provide you GUI interface. With this GUI, users got an easy to use interface that allowed them to build complex lab help of a variety of supported Cisco routers.
Supported GNS3 Features listed on their website.
- Design of high quality and complex network topologies
- Emulation of many Cisco router platforms and Pix, ASA firewalls
- Simulation of simple Ethernet, ATM and Frame Relay switches
- Connection of the simulated network to the real world
- Packet capture using Wireshark
GNS3 Supported Platforms
Cisco: – 1710, 1720, 1721, 1750, 1751, 1760, 2610, 2610XM, 2611XM, 2621, 2621XM, 2621XM, 2650XM, 2651XM, 3620, 3640, 3660, 3725, 3745, 7200,
Follow these step to install GNS3 on your local Windows PC
Using any web browser, open https://www.gns3.com website and click free download link:
If you haven’t register already on GNS3 website create an account and then click Create Accounts Continue.
If you already have an account, click Login, fill in your details and then click Login & Continue:
After login, you will be prompted to select the version of GNS3 to download. In this guide, we will select the Windows installation. Click the Download button to download the GNS3-all-in-one package:
Go to Windows Explorer to your Downloads folder and then double-click the GNS3-1.5.3-all-in-one.exe file:
The GNS3 Setup wizard open. Click Next > to start the installation:
Read the license agreement, and if you agree with the contents, click the I Agree button to continue the installation:
Select the Start Menu folder for the GNS3 shortcut. The default is the GNS3 folder. Click Next > to continue the installation:
Leave all software selections at their default selection and click Next > to continue the installation:
Choose an install location. The default location is C:\Program Files\GNS3. Then click Install:
If WinPcap is already installed, a warning message is displayed. Click Ok to reinstall.
The WinPcap installation wizard displays. Click Next > to continue the installation:
Read the agreement and if you agree, click the I Agree button to continue with the installation:
Checkbox Automatically starts the WinPcap driver at boot time checked and click Install:
Click Finish to complete the installation:
GNS3 setup software will download the Wireshark install files. Wait for the process to complete:
The GNS3 installer will then download the SolarWinds Response Time Viewer.
Enter your Email address and click Continue.
Click the I accept the terms of the License Agreement checkbox and then click Next > to continue the installation:
Leave default installation folder click Next. And wait for the process.
Click Finish once the process completes.
Wait for the process to complete:
Once installed a Completed message is displayed. Click Next >
Select No and Next > to continue:
Leave the Start GNS3 checkbox enabled and click Finish to complete the GNS3 installation:
Congratulations! You have successfully installed GNS3. Click here for configuring Cisco IOS images.
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