Home | Site Map | Cisco How ToNet How To | Wireless |Search | Forums | Services | Donations | Careers | About Us | Contact Us|

Can I use wireless for Hyper-V VM to access the Internet

Wi-Fi, Mobile phone.

Can I use wireless for Hyper-V VM to access the Internet

Postby blin » Thu Feb 14, 2013 9:39 pm

Q: I have enabled Hyper-V in my laptop running Windows 8. Can I use the laptop wireless for VM to access the Internet?

A: WiFi NIC is not supported in Hyper-V, the virtual switch in Hyper-V is a “layer-2 switch,” which means that it switches (i.e. determines the route a certain Ethernet packet takes) using the MAC addresses that uniquely identify each (physical and virtual) network adapter card. The MAC address of the source and destination machines are sent in each Ethernet packet and a layer-2 switch uses this to determine where it should send the incoming packet. An external virtual switch is connected to the external world through the physical NIC. Ethernet packets from a VM destined for a machine in the external world are sent out through this physical NIC. This means that the physical NIC must be able to carry the traffic from all the VMs connected to this virtual switch, thus implying that the packets flowing through the physical NIC will contain multiple MAC addresses (one for each VM’s virtual NIC). This is supported on wired physical NICs (by putting the NIC in promiscuous mode), but not supported on wireless NICs since the wireless channel established by the WiFi NIC and its access point only allows Ethernet packets with the WiFi NIC’s MAC address and nothing else. In other words, Hyper-V couldn’t use WiFi NICs for an external switch if we continued to use the current virtual switch architecture.

To work around this limitation, you can use Microsoft Bridging solution. Create an Internal network, name it “External”, system will create a Virtual Network adapter for it. Create Network Bridge between your WiFi NIC and the Virtual External Network adapter. Assign External network for your VMs, so they have internet connection.A:
How to Configure and Troubleshoot Cisco

Tablet and Smartphone Setup Guide
Site Admin
Posts: 3673
Joined: Wed Dec 31, 1969 7:00 pm
Location: Chicago, USA

Return to Wireless

Your Ad Here

Who is online

Users browsing this forum: Yahoo [Bot] and 2 guests