network – cisco gns3 – win 7 – linux

Graphical Network Simulator –

With windows 7 as physical machine and Virtual machines including Linux


GNS3 Virtual Cisco Router – connects to physical machine – VirtualBox Host connects to physical machine as well.
The physical machine bridges the route from Virtual router to VirtualBox Host

Network settings

1. Windows VirtualBox Host – Adapter 1 = Host-only Adapter – VirtualBox Host-Only Ethernet Adapter (IP address dhcp picks up

2. Physical machine uses VirtualBox Host-Only Network addapter (Ip address

3. GNS3 cloud (NIO Ethernet) Network adapter ‘Sun’ on local host: VirtualBox Host-Only Network. Connect your router to the cloud (configured router

Testing ping from router to Virtual machine

R1#ping repeat 200

Type escape sequence to abort.
Sending 200, 100-byte ICMP Echos to, timeout is 2 seconds:

Ping from Virtual machine to Router

C:\Documents and Settings\11>ping

Pinging with 32 bytes of data:

Reply from bytes=32 time=25ms TTL=255
Reply from bytes=32 time=10ms TTL=255
Reply from bytes=32 time=9ms TTL=255
Reply from bytes=32 time=14ms TTL=255

Ping statistics for
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 9ms, Maximum = 25ms, Average = 14ms

4. To add Backtrack machine from VirtualBox – Adapter 1 = Host-only Adapter – VirtualBox Host-Only Ethernet Adapter.
Once booted ifconfig eth0 netmask

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