Bind Dynamips interface with Vmware OS NIC

That’s very important if you are practicing any topology where you need to communicate with VMware and dynamips. Specially I was needed this while I was trying to get IP from DHCP server running on dynamips router to a Windows running at VMware. That’s pretty cool, huh! I have pointed out the steps to get it done:

at WIndows Host Machine
1. Create a Microsoft Loopback Adapter
2. Set the Loopback Adapter in DHCP mode

at Dynamips Router
3. Bind the Loopback Adapter (NIO_gen_eth:) with one Dynamips NIC (for example FE0/0) at *.net file
4. Start the router
5. Configure a DHCP Pool (for example at Dynamips router
6. Put a static IP (for example of the Dynamips NIC (for example FE0/0) binded with that Loopback adapter
7. The Loopback adapter should get a DHCP IP from IOS DHCP Server

at VMware Workstation Global Configuation
8. go to Edit>’Virtual Network Settings’>’Host Virtual Network Mapping’
9. Click beside dropdown menu of VMnet2: (or whatever you like), here you will find the Loopback Adapter you created at step 1
10. Select the adapter, click at right ‘>’ key and add the proper subnet you created for DHCP
11. Click ‘Apply’ and ‘Ok’

at VMware Guest OS
12. Select the Ethernet mode at ‘Custom:Specific virtual network’ and select the ‘VMnet2(Bridged)’ of the VM NIC you created at step 9
13. Set the guest NIC at DHCP mode and repair it, it should get the DHCP IP from Dynamips IOS DHCP.

I tested this on Windows XP, Windows 2003 Server Standard and Enterprise edition.


About Mijanur Rahman
Mijanur started blogging to save and share his study and research notes. A deep diver in technologies and loves to participate in technical brainstorming. Proud father of two wonderful daughters loves to spend time with them. He writes about the topics that people deal with every day mainly on technology arena. To get in touch contact him at

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