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Q. I'm using a Realtek NIC with Hyper-V and I lose network connectivity if I enable jumbo frames within a virtual machine. What's wrong?
John Savill
January 11, 2010
1 Min Read
A. I've experienced a lot of problems with Realtek NICs and Hyper-V, and I've found other people have also hit problems. There seems to be an incompatibility between Realtek and Hyper-V in many situations, in particular jumbo frames, which just won't work. The best solution is to stay away from the Realtek NICs for servers (they're desktop NICs after all). I've had a lot of success using Intel NICs instead. During my research, I heard of similar problems with Broadcom NICs, but I haven't seen this first hand.
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Q. I created a new virtual machine (VM) and I'm connecting it to the virtual hard disk of a previous VM. I still have the old VM's XML configuration file. Can I change the new VM so it keeps the old one's network configuration?
Check out hundreds more useful Q&As like this in John Savill's FAQ for Windows. Also, watch instructional videos made by John at ITTV.net.
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