Tuesday, January 21, 2020

Getting More Bang for Your VXLAN Bucks

A little while ago I explained why you can’t use more than 4K VXLAN segments on a ToR switch (at least with most ASICs out there). Does that mean that you’re limited to a total of 4K virtual ethernet segments?

Of course not.

You could implement overlay virtual networks in software (on hypervisors or container hosts), although even there the enterprise products rarely give you more than a few thousand logical switches (to use NSX terminology)… but that’s a product, not technology limitation. Large public cloud providers use the same (or similar) technology to run gazillions of tenant segments.

Want to know more? Watch our NSX, AWS and Azure networking webinars.
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Thanks to Ivan Pepelnjak (see source)

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