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New VLAN Article at has published another article of mine, this one on the various VLAN configurations within VMware Infrastructure 3 (VI3), the differences between each of them, and when each configuration may be appropriate.

Here’s the obligatory teaser excerpt from the article:

When VMware gurus talk about the use of virtual LANs (VLANs) with VMware Infrastructure 3 (VI3), they are usually referring to the use of VLAN trunks. There are, however, three other types of VLAN configurations VI3 uses: virtual switch tagging (VST), external switch tagging (EST) and virtual guest tagging (VGT).

This tip is your guide to VST, EST and VGT, covering what they are and when to use them.

Read the full article here.

Between this latest VLAN article, an earlier VLAN article published on, a VLAN article published here on my site, and the latest discussion of the use of the native VLAN, I’m trying to make sure everyone has the information they need to understand and use VLANs in their VI3 implementation. If there are other networking-related articles you’d like to see, please shoot me an e-mail and let me know, or post your ideas/suggestions in the comments below. Thanks!

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