![]() ![]() If you don't get a reply, verify you've properly added an IP address to your tap0 interface and that it's on the same subnet as the connected Ethernet interface on your GNS3 router (open Terminal and type ifconfig tap0). If you get a reply then you're nearly done. Go back to GNS3, open a Console to the router, and add the following commands:Ĩ> Test your tap0 interface connection from your GNS3 router using a ping command. Type ifconfig to verify your tap0 settings, then use ping to test the interface from the OS X Terminal: Open the OS X Terminal app and type the following commands: You can perform this step only after a link has been made in GNS3 from a device node to a Cloud node configured with /dev/tap0 (otherwise tap0 does not show up in OS X's ifconfig). Now create an Ethernet link between your router and the cloud.Ħ> Configure the TAP Interface with an IP address in OS X:Ĭonfigure interface tap0 with the dummy network you're using in GNS3 (172.16.1.0 /24 for this example). Click C1, NIO TAP and type /dev/tap0 in the field provided. Double-click the Cloud node to configure it with the tap interface. Add a Router and a Cloud node to your workspace. Sudo chmod 4755 /Applications/GNS3.app/Contents/Resources/dynamips* Sudo chown root /Applications/GNS3.app/Contents/Resources/dynamips* This step allows dynamips to connect to the tap drivers. IP Address: 10.1.10.139 /24 (Interface en0)Ĥ> Elevate unix permissions on the dynamips app. You'll need this information from your PC to set things up properly. I'll be using these settings for this example. Here's my MacBook Pro's network settings. This information can be obtained using System Preferences and Network, or ifconfig and netstat -r. ![]() Attatch an Ethernet cable from your Mac to your Internet router or cable modem.Ģ> Download and Install OS X TunTap drivers from h**p:/// Your Mac must have a physical Ethernet connection to the Internet.ġ> Turn off your Mac's Wi-Fi antenna. Important Note: You cannot connect to the Internet using Wi-Fi and GNS3. Here's a quick and dirty rundown that should help clear things up. ![]() This is a virtual Interface driver that has to be installed in OS X. Instead you have to use a transitional interface, known as a tap device. This is mainly due to the fact that you cannot simply connect a GNS3 device node (like a router) to your Mac's Ethernet Interface. There seems to be a lot of confusion around setting up a live Internet connection using GNS3 running on Mac OS X Mountain Lion. How to connect to the Internet using GNS3 0.8.3.1 and OS X Mountain Lion ![]()
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