David Varnum

Author Archives: David Varnum

Issue deploying CSR on ESXi vSphere 6.5

I recently ran into a slight bump when deploying the Cisco Cloud Services Router 1000v (CSR) on ESXi vSphere 6.5.  The error message I received when trying to deploy the CSR OVA was: VALUE_ILLEGAL: Value “VMXNET3 virtio” of ResourceSubType element not found in [E1000, VmxNet2, VmxNet3]. I Googled this message and found nothing. Great, well […]

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OCSA Passed!

It’s official – I passed the ONF Certified SDN Associate exam. I’m OCSA #SDN10356! If you’re interested in obtaining this certificate, I recommend you read through my short blog series covering the resources necessary on the blueprint. ONF Certified SDN Associate (OCSA) – Part 1 ONF Certified SDN Associate (OCSA) – Part 2 ONF Certified […]

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ONF Certified SDN Associate (OCSA) – Part 5

The OCSA exam tests your understanding of components in an SDN framework, your ability to articulate the fundamental workings of networking and the OpenFlow protocol, as well as your knowledge of vendors, solutions and projects available in the SDN landscape. This is the last part in a series of posts that review the blueprint for […]

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