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.

VMware NSX Links from Sacramento VMUG

Recently I was one of the presenters at the Sacramento VMUG. The topic of the night was Networking and VMware NSX. At the end of my time, I promised a list of web links to VMware NSX resources. Here we go:

VMware Walkthrough for NSX: http://featurewalkthrough.vmware.com/NSX/ – If you are not familiar with the VMware Walkthroughs; this is essentially a guided tour of the products and features.

VMware Hands-on Labs for NSX:
http://blogs.vmware.com/networkvirtualization/2014/09/new-vmworld-2014-hands-labs-vmware-nsx-goodness.html – This is an introductory Blog Post that describes each of the new labs from VMworld 2014.

Here are links to the individual labs:
HOL-SDC-1403 – VMware NSX Introduction: http://labs.hol.vmware.com/HOL/catalogs/lab/1483
HOL-SDC-1425 – VMware NSX Advanced: http://labs.hol.vmware.com/HOL/catalogs/lab/1485
HOL-SDC-1424 – VMware NSX in the SDDC: http://labs.hol.vmware.com/HOL/catalogs/lab/1484
HOL-PRT-1462 – Virtualized Data Center Security: VMware NSX and Palo Alto Networks Next Generation Virtual Firewall: http://labs.hol.vmware.com/HOL/catalogs/lab/1514
HOL-SDC-1420 – Openstack with VMware vSphere and NSX: http://labs.hol.vmware.com/HOL/catalogs/lab/1478

VMware NSX product page: http://www.vmware.com/products/nsx/

VMware NSX 6 Documentation Center: http://pubs.vmware.com/NSX-6/index.jsp

VMware Education: VMware NSX Training and Certification

Pluralsight Video Training: VMware NSX for vSphere Introduction and Installation by Jason Nash

Technical Papers:
VMware NSX Network Virtualization Platform Whitepaper: http://www.vmware.com/files/pdf/products/nsx/VMware-NSX-Network-Virtualization-Platform-WP.pdf
VMware® NSX for vSphere (NSX-V) Network Virtualization Design Guide: https://communities.vmware.com/docs/DOC-27683 – This design guide has recently been updated. Check this link and download the latest version.

VMware NSX YouTube Channel: https://www.youtube.com/user/vmwarensx

VMware NSX on Twitter: https://twitter.com/vmwarensx

VMware NSX Community: https://communities.vmware.com/community/vmtn/nsx

VMware’s Network Virtualization Blog: http://blogs.vmware.com/networkvirtualization
Network Heresy: http://networkheresy.com/ – This is the Who’s Who for network virtualization – Check out contributors!
Brad Hedlund: http://bradhedlund.com/category/network-virtualization/
Chris Wahl’s Wahlnetwork blog: http://wahlnetwork.com/tag/nsx/
Hany Michael’s Hypervizor blog: http://www.hypervizor.com/nsx/
DailyHypervisor: http://dailyhypervisor.com/ – Complete SDDC and integration!
Roie9876: http://roie9876.wordpress.com/
NSX Tech: http://nsxtech.net/
Virtualization Warrior: http://www.m80arm.co.uk/
Data Center Notes: http://www.dcnotes.net/

I am certain there are many more blogs/links for NSX. If you have a favorite that I haven’t included, leave a comment and I will add them.

VMware KB: Configuring syslog server for VMware NSX for vSphere 6.x controllers

VMware KB: Configuring syslog server for VMware NSX for vSphere 6.x controllers.

This is an interesting KB article. Please notice that the method for configuration is an API call! This is built for automation!

FYI, You configure the NSX Manager appliance to use a syslog server with a web browser.


Select “Manage Appliance Settings”


On the Settings > General page, click the edit button in the Syslog Server portion of the page.


Enter the DNS name or IP address of your Syslog server, then click OK.


Here is a hidden gem from VMware!

This week, while participating in a VMware vSphere” What’s New [v4.x-v5.5] train the trainer class, I came across this site: vmwarewalkthroughs.com. The site has walk throughs for the vCloud Suite, VMware NSX, VSAN and vCAC/Big Data.

Select the product from the home page.

VSANwalkthrough-1 NSXwalkthrough vCACwalkthrough vcloudwalkthrough
Then select the specific walk through from the navigation menu on the left.

Each walk through is guided by instructions and highlighted selections.

While the walk through is not really hands-on they do give you a good idea of the steps required to setup and perform administrative tasks with the various products.

For someone who is looking for a way to get a basic understanding and exposure to the products, this site is an excellent resource.