Re: GNS3 with physical Switches

This might not be the fanciest method but I simply allow the dynamips
to transparently connect to the external switch by passing through a
free ethernet interface on the server. In this example I take a free
ethernet port such as eth2 - no ip address assigned.
I set up router or switch R5 as layer 2/3 or trunking interface.

linux_server # ip link set eth2 up

linux_server # ip addr ls eth2
 eth2: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:14:4f:83:17:5c brd ff:ff:ff:ff:ff:ff
    inet6 fe80::214:4fff:fe83:175c/64 scope link
       valid_lft forever preferred_lft forever

net file:

  [[Router R5]]
...
  f0/0 = NIO_linux_eth:eth2
  F1/0 = R6 F1/0

-Rich

On Wed, Feb 22, 2012 at 7:05 PM, Keller Giacomarro <keller.g_at_gmail.com> wrote:
> If you're running Linux, you can also enable 802.1q tagging for your single
> interface and then hook it into your 3750 breakout switch. I would not
> recommend for those new to Linux, but if you're already comfortable it
> works quite well.
>
> More on adding 802.1q to Linux:
> http://ubuntuforums.org/showthread.php?t=703387
>
> Here's some info on doing the same in Win7, but I haven't tried it.
> http://7200emu.hacki.at/viewtopic.php?t=9129
>
> Keller Giacomarro
> keller.g_at_gmail.com

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Received on Fri Feb 24 2012 - 10:32:32 ART