Networking

Increase Network Buffer Sizes on Hyper-V VMBus

February 3, 2010 // 1 Comment

I saw this post being re-tweeted by Ben Armstrong and read it this morning.  It might actually be the solution to a weird problem we’ve been having at work. Think back to your computer science classes.  Every process on a computer only ever gets a slice of time on the processor.  [...]

Ireland: Slowest Internet Connectivity In Europe

January 29, 2010 // 0 Comments

It’s no surprise to 99.999% of Irish people that it has been announced that we in Ireland have the slowed internet connectivity in Europe.  Things like 30MB cable broadband or 24MB ADSL2 are irrelevant to the vast majority of us despite the number crunching by ISP’s.  Want an [...]

Hyper-V and VLAN’s

December 1, 2009 // 31 Comments

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 [...]

W2008 R2 Hyper-V Networking Enhancements

November 26, 2009 // 1 Comment

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 [...]
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