Comments on: How to connect GNS3 to the internet in MacOSX

By: Eric

Eric — Sun, 27 Jun 2010 07:16:19 +0000

Hi guys, as Robert mentioned, it seems that you need a software with sufficient privilege to bring up the tap interface before you can configure it with ifconfig. I was stuck, but now it is working. More details here:

http://etherealmind.com/installing-tun-tap-driver-on-leopard/

By: Robert

Robert — Tue, 22 Jun 2010 15:28:09 +0000

Problem:
sudo ifconfig tap0 10.100.100.100 netmask 255.255.255.0
ifconfig: interface tap0 does not exist

Ignore it move on and configure this in your .net file:

[[ROUTER R1]]
F0/0 = nio_tap:/dev/tap0

Start your GNS3

From your OSX terminal do a ifconfig -all

TAP0 should be there.

By: adrian

adrian — Mon, 24 May 2010 19:02:57 +0000

Hello
I have been at it for days now and still cant get it to work ((
I need it cause i have to study for ccnp.
I see the tap0 when i do ls /dev but when i configure the ifconfig ip address it says tap0 does not exist.

Please help me

By: Josh

Josh — Sat, 24 Apr 2010 18:43:45 +0000

thekerb,

I am not sure how it works with MacOSX, but in Linux, this means you need to run GNS3 as root.

In ubuntu, I use ‘sudo gns3′ from the cli or change the shortcut to ‘gksudo gns3′.

Maybe this will help.

Josh

By: thekerb

thekerb — Sat, 24 Apr 2010 03:53:32 +0000

No dice,

I’m unable to have tap0 up and when trying to make a manual connection from a f0/1 to nio_tap:tap0 GNS3 gives me the erro:
206-unable to create TAO NIO

Any ideas?

Thanks

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Juniper can talk to Cisco… « Gungajim's Blog — Sun, 11 Apr 2010 21:37:19 +0000

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By: joseph k

joseph k — Mon, 05 Apr 2010 15:17:49 +0000

sudo ifconfig tap0 create up
sudo ifconfig tap0 x.x.x.x/x

By: Ramon

Ramon — Mon, 29 Mar 2010 17:18:19 +0000

I’m still having the:

I’m usign SnowLeopard 10.6.2

“ifconfig: interface tap0 does not exist”

Has anyone found a solution for that.

Thanks.
Ramón

By: naner

naner — Fri, 26 Mar 2010 07:45:34 +0000

hi, I was able to perform all the above steps. however, i am unable to ping from the gns3 router to the internet. i can only ping 10.100.100.100.

on my mac, i am unable to access the internet after issuing the natd command. i can ping 10.100.100.100 and .101 though.

any idea? thanks!

By: links for 2010-03-09 « Where Is All This Leading To?

links for 2010-03-09 « Where Is All This Leading To? — Wed, 10 Mar 2010 00:32:54 +0000

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