Posted on September 23, 2019 5:32 pm
 |  Asked by Clinton Neill
 |  130 views
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Can you use /31 point-to-point links for Spine-Leaf connections? All the examples seem to show /30 networks. Same question about MLAG links.

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Answered on September 23, 2019 8:04 pm

Hi Clinton.

You should be able to use /31 subnets.

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Posted by Derek Lambert
Answered on September 24, 2019 12:07 am

Yes /31’s work. There is no need for Network or Broadcast IP’s on a point-to-point configuration.

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Posted by Alexis Dacquay
Answered on September 26, 2019 9:50 am

Every time I build a new network I use /31 as much as possible.
Some customers have internal long-established policy of allocating /30, and they don’t want to change that on their IP address management tool.
It’s not a technical limitation, it is a personal/company choice.

Regards,
Alexis

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