auto br0
iface br0 inet static
address 10.105.105.20
netmask 255.255.255.0
gateway 10.105.105.254
dns-nameservers 10.105.105.254
dns-search something.com
pre-up tunctl -t tap0
pre-up brctl addbr br0
pre-up brctl addif br0 eth0
pre-up brctl addif br0 tap0
pre-up ifconfig eth0 0.0.0.0 promisc up
pre-up ifconfig tap0 0.0.0.0 promisc up
post-down ifconfig eth0 down
post-down ifconfig tap0 down
post-down ifconfig br0 down
post-down brctl delif br0 eth0
post-down brctl delif br0 tap0
post-down brctl delif br0

I am trying to do on window but not able to access the Local PC address.

Do you please let me know how to do it on a window PC

Fintan.

This is a problem. This can not be accomplished from your host machine. It will find a better route.

You can use vmware server on your host and bring up a virtual machine only connected to tap.2.
http://www.blindhog.net/voice-lab-branch1-and-branch2-virtual-machine/

Josh

ping -I ip.of.tap.1 ip.of.tap.2

how can i split those two interfaces from seeing each other? each tap has its own interface number connected to a unique bridge, both bridges are on different networks.

i have noticed that when tunctl “sets the persists”, both of my interfaces are owned by UID 0, what does that mean? could i split them here somewhere????

As i tried in windows XP, i am able to ping to access server from other PC’s on the LAN, but not to other routers on the GNS.

I have one router say R1 and one cloud, I made connection with R1 and cloud, and made R1 as Access-server. I have another router name R2 which is not connected to R1 nor cloud. How i can access R2 on GNS from other PC on the same LAN.

This is the configuration made on R1
###########################################

!
! No configuration change since last restart
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname access-server
!
boot-start-marker
boot-end-marker
!
enable password anand
!
no aaa new-model
!
resource policy
!
ip cef
!
!
!
!
ip host r1 2001 172.16.0.240
ip host r2 2002 172.16.0.240
ip host r3 2003 172.16.0.240
ip host r4 2004 172.16.0.240
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
username anand password 0 anand
!
!
!
!
!
!
!
interface FastEthernet0/0
ip address 172.16.0.111 255.255.0.0
duplex half
speed auto
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial1/0
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/1
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/2
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/3
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/4
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/5
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/6
no ip address
shutdown
serial restart-delay 0
!
interface Serial1/7
no ip address
shutdown
serial restart-delay 0
!
no ip http server
no ip http secure-server
!
!
!
logging alarm informational
!
!
!
!
!
!
control-plane
!
!
!
!
!
!
gatekeeper
shutdown
!
!
line con 0
logging synchronous
transport output all
stopbits 1
line aux 0
transport output all
stopbits 1
line vty 0 4
login local
transport output all
line vty 5 14
login local
transport output all
line vty 15
login local
!
!
end
###########################################

This tutorial is very good. I had been hacking at getting this working for atleast a week off and on. This was 1-2-3. Cheers!!!

Or another way when you configure the cloud you will note it says requires root access. If you run Terminal (shell) then enter sudo gns3 this will run GNS3 with root access and all will be well

If GNS3 is not installed in a path that linux searches for binaries you will have to enter the full path i.e. sudo /home/ubuntu/gns3

Hope that helps

You guys are rocking and thanks for all the support. Let me jump into my problem.

I’ve GNS3 running inside my Vmware virtual machine and everything seems to be perfect. The problem is that, I can’t ping my router from the VM that hosts GNS3. Also, not pinging from the GNS3 router to the host VM. What could be the problem? I can ping fine with VPCS. I’m sure that my NIO ETH configuration is correct. Can someone help?

Thanks!