How to Use GNS3 - www.ncpnetwork.com
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How to Use GNS3
This document explains how to configure a simple GNS3 topology consisting of two Cisco routers.

Your First GNS3 Topology

Start

1. Start GNS3, you will be prompted to create a New project:
Give Project Name and Location where you want to save your project thne Click OK.

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2. Open a New Window like this

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3. To create a new GNS3 topology, select a group of the Routers, Click on "c3600 Router" now Drag and Drop to the Workspace.

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4. Now Select a group of the Switches, Click on "Ethernet Switch" Drag and Drop to add Switches.

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5. Now Select a group of "Browse End Devices", and Click on "VPCs" Drag and Drop to add PC.

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6. First Click the Add a Link button to start adding links to your topology.
Second: Now Left Click on a R1 Router in your topology to display available interfaces. In this example various Fast Ethernet and Serial interfaces are available.
For example: We Select Serial3/0

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7. Then select another device in the topology to connect the interface to. In this example we select Serial3/1.

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8. Now complete the connection b/w R1 to R2.

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9. Now click again on R1 to Connect the Switch.
In this Exp: we select FastEthenet0/0

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10. Now click on Switch 1 and select port no.1 to connect to R1 Router.

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11. Click again on Sw1 to connect PC, select Port No.2, then Click PC1 and select Showing Interface Ethernet0.
Now Connect R2 Interface yourself.

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12. Now Our Toplogy is Complete,
First: click Add Link button to Stop adding links.
Second: Click the Show/Hide interface labels button on the GNS3 Toolbar to display interface labels in your topology.

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13. Click the Start/Resume button to start topology.
Note: After Start topology, GNS3 indicates that the devices have been powered on by turning the interface connectors from red to green.

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11. You are now ready to configure your devices.
Double click on R1 to open Router Console Connection. or Righ click and choose Console.


  • Enjoy....

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End