Daily Archives: January 27, 2015

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January 27, 2015

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Networking, NSX, training, Troubleshooting

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VMware KB: Creating an NSX logical switch fails with the error: Unable to allocate an available resource

VMware KB: Creating an NSX logical switch fails with the error: Unable to allocate an available resource.

A couple of students mentioned this error during a lab in the VMware NSX: Install, Configure and Manage class this week.

The issue is simple to create and remedy. Logical switches are assigned VNI (VXLAN Number Identifier) from a Segment ID Pool. If the Segment ID Pool is not configured before you try to provision a logical switch then you will get the “Unable to allocate an available resource” error. The resolution is to configure the Segment ID Pool before attempting to create Logical Switches.

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January 27, 2015

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Updates, vCenter, vSphere

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VMware KB: Default behavior of DRS has been changed to make the feature less aggressive

VMware KB: Default behavior of DRS has been changed to make the feature less aggressive.
VMware has released vCenter Server 5.5 Update 2 version D today. In the release notes, VMware called out that a new configuration parameter has been added to adjust DRS aggressiveness when a host is going into maintenance mode.