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Specify minimum subnet prefix for Monitor private link #81984

Closed stewartadam closed 2 years ago

stewartadam commented 2 years ago

Docs should specify the minimum subnet prefix / subnet size required for using AMPLS. From my own basic deployment, it looks like it needs at least 11 hosts, so likely a /27 factoring in the Azure-reserved hosts.

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MonikaReddy-MSFT commented 2 years ago

@stewartadam - Thanks for brining this to our attention. We will investigate it further and update you shortly.

noakup commented 2 years ago

@stewartadam thanks! can you explain what are the Azure reserved hosts? I'm not familiar with that

stewartadam commented 2 years ago

@noakup there are some details here - in short, the network identifier, first two IPs, and the last IP (broadcast) are reserved by Azure so the usable subnet size is N-5 -- so for a /29 (6 hosts) only 1 is usable in a Azure subnet.

noakup commented 2 years ago

Thanks for that, very helpful! I'm updating our documentation as you suggest, recommending a minimum of /27 and linking to the article you point to. Many thanks for helping us improve.

noakup commented 2 years ago

I added a paragraph to the Requirements section here, it will show up shortly.

MonikaReddy-MSFT commented 2 years ago

@noakup - Thanks for providing your insights and raising a PR. @stewartadam - Thanks again for bringing this to our attention. We have updated the Doc and it will be live once its merged. We will now proceed to close this thread. If there are further questions regarding this matter, please tag me in your reply. We will gladly continue the discussion and we will reopen the issue.

stewartadam commented 2 years ago

Thank you!