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MAC duplication issues with captured VMs and WDS

By On March 12, 2010 · Leave a Comment

I’ve previously reported problems with MAC duplication on Hyper-V host external network connections on Windows Server 2008 R2, which I’ve never fully resolved, although we have been successfully [...]

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Building a SharePoint 2007/2010 development environment – Part VI: Issues and Results

By On December 1, 2009 · 1 Comment

In the first five parts of this series I covered the project objectives and the system design, then turned my attention to the

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More on routine loss of external network connectivity on Hyper-V hosts (not guests)

By On October 23, 2009 · 12 Comments

Further to my post from a few months ago on the this topic (dating back to the RC build), I’ve seen this same problem a few more times on the RTM build of Windows Server 2008 R2. My suggested approach still fixes the [...]

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Disabling IPv6 on Server Core and Hyper-V Server

By On September 29, 2009 · 4 Comments

Note: this original KB article from which this guidance was taken has now been removed. Please see the comments below for more information.

I recently posted about the Conflicting Microsoft guidance on IPv6. While you can remove IPv6 from a NIC on a full installation of Windows Server 2008 [...]

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Conflicting guidance on IPv6

By On September 17, 2009 · Leave a Comment

I recently noticed that Cable Guy is saying ”don’t disable IPv6“. While I broadly agree with the approach and the reasons he suggests not to, I’ve not yet seen any down-side to disabling it, and I know we aren’t using the IPv6 technologies that Cable Guy mentions. But why [...]

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Windows Deployment Services trumps Internet Connection Sharing

By On August 26, 2009 · 4 Comments

I imagine the responses to this post’s title will fall in to one of three categories:

What’s Windows Deployment Services? What’s Internet Connection Sharing? Why on earth would you use both in one machine?

To answer the last question I need to unveil a bit about the network approach that we’ve adopted for the Hyper-V on Windows [...]

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Routine loss of connectivity on a Hyper-V host’s external connection

By On August 25, 2009 · 2 Comments

We’ve recently been piloting a laptop developer build on Windows Server 2008 R2 Release Candidate (Build 7100) with the Hyper-V role. One of the first receipients of this build complained of connectivity problems in Office Communicator once every minute or two. For as-yet undiagnosed reasons we have lengthy sign-in times for Communicator, so this loss of connectivity rendered it completely unusable. This same [...]

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Hyper-V Manager over VPN may fail if the server is VMM-managed

By On August 24, 2009 · 1 Comment

About a year ago John Howard published guidance on how to get Hyper-V Manager to connect to Hyper-V servers over VPN. His network monitoring and suggestion to change the VPN connection IP settings so that the VPN adapter registers the machine’s new address in DHCP/DNS went a long way towards fixing the [...]

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