Tag: Networking

0x0000007C BUGCODE_NDIS_DRIVER Blue Screen on Windows Server 2008 R2 with NLB

There is a blog post by a Microsoft employee that describes an issue where a virtual machine (Hyper-V or VMware) running Windows Server 2008 R2 will crash.  The VM is configured with Windows Network Load Balancing.  Their research found that the problem occurred with “certain” antivirus packages installed.  They didn’t (and probably won’t) specify which…

Read the full article

Hyper-V and VLAN’s

How do you run multiple virtual machines on different subnets?  Forget for for just a moment that these are virtual machines.  How would you do it if they were physical machines?  The network administrators would set up a Virtual Local Area Network or VLAN.  A VLAN is a broadcast domain, i.e. it is a single…

Read the full article

W2008 R2 Hyper-V Networking Enhancements

Windows Server 2008 R2 includes some enhancements to optimise how networking works in Hyper-V.  I’m going to have a look at some of these now. Virtual Machine Queue Here’s the way things worked in Windows Server 2008.  The NIC (bottom left) runs at the hardware level.  VM1 has a virtual NIC.  When it communicates memory…

Read the full article