My first lightboard video! #RunvRNI

I recently did a recording of my first lightboard session. With vRealize Network Insight as a topic. Why? Because in my opinion vRNI is one of the products from the VMware portfolio which is not widely known in the market. And that’s a pity, because this tooling is so d*mn powerful, that every network engineer would like to have this in their own environment.

And it went finally online today! Please have a look! If you have any questions or remarks let me know!

Watch this “lightboard” video led by Wesley Geelhoed, Virtualization Consultant @ ITQ, who explains what VMware vRealize Network Insight is.

NSX-v: Network performance issues within VXLAN with qfle3 NIC driver (workaround, SR closed)

Last week I faced an issue with network throughput performance within VXLAN on NSX-v with a specific NIC and NIC driver. I came across this problem, because I am currently working on a ‘greenfield’ SDDC implementation project at one of our customers, and I was doing initial performance tests on the platform. (more…)

Add multiple static routes to all your NSX-v edges

When you have NSX running on a vSAN stretched cluster over two datacenters, or a Cross vCenter NSX setup over multiple datacenters you probably need static routes for the networks behind the DLR to keep the routing tables alive on the physical network routers when a datacenter failover occurs. I am working at a customer where I needed to add 10 static routes to 20 different ESG’s. It’s obvious that I didn’t want to add them manually. Therefore I created a script to put in the static routes in the edges for me. This may come in handy for somebody else.

Requirements:
– Powershell (5.1)
– PowerCLI
– PowerNSX

(more…)

Install ESXi (6.7) on a host with a 1-core CPU

Usually installing ESXi (since 5.0) on a host with just one CPU core will simply fail. If you only have a single CPU core then the installation terminates with the following error: CPU_CORES_ERROR: Your machine has [1] cpu core(s) which is less than recommended [2] cpu cores. Since I have a server in my lab with just one core ( why? good question 🙂 ) I needed to get myself a workaround in order to get ESXi installed in my lab environment. (more…)

NSX-v backup retention script

The NSX-v manager is not being backed up via snapshot-based backups. This isn’t officially supported. Therefore a file/configuration based backup method used to backup the configuration of your NSX manager periodically.

Unfortunately, there is no retention setting available in the NSX manager so if you are not careful the backup directory will grow in a rapid fashion and fill up your disk very fast. Via this easy script I’ve written, you can enable backup retention for your NSX-v backup files. (more…)