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Create Subnet in Multiple Clusters from PC

  • April 27, 2026
  • 6 replies
  • 33 views

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I am deploying a new AHV environment with 10 clusters. Each cluster will have the same subets/vlans. If I create these from Prism Central can I check the box next each cluster in the subnet creation screen so that each cluster gets the subnet?

6 replies

JeroenTielen
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No. You need a Multi Cluster Virtual Switch for that. More info here: https://www.jeroentielen.nl/nutanix-multicluster-virtual-switch-management/


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So what is the solution? do you have to create the same subnet 10 times even though you are doing it from PC? Does the cluster selection drop down not let you check a box next to each VS/Cluster you want the subnet on?

Don’t have the free NICs available to create a MCVS.


jarrodl
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  • Outrider
  • April 27, 2026

So what is the solution? do you have to create the same subnet 10 times even though you are doing it from PC? Does the cluster selection drop down not let you check a box next to each VS/Cluster you want the subnet on?

Don’t have the free NICs available to create a MCVS.

Previously each subnet had to be created on each virtual switch for each cluster (vs0), That is still the case if you want a subnet to only existing on a specific cluster.

 

If you need a subnet that spans across multiple clusters, that’s where the multi-cluster vswitch comes into play. 

 

To answer your question “do you have to create the same subnet 10 times even though you are doing it from PC?”, Yes or you can use an automation approach such as script to do this for you. 


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  • Author
  • Adventurer
  • April 27, 2026

If I only have 2 NICs is there anyway to migrate to a MCVS one NIC at a time? Similar to how you can migrate a vSphere standard switch to a DVS one NIC at a time?


jarrodl
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  • Outrider
  • April 27, 2026

If I only have 2 NICs is there anyway to migrate to a MCVS one NIC at a time? Similar to how you can migrate a vSphere standard switch to a DVS one NIC at a time?

That’s something I am looking to test in May as I am in the same boat. Only 2 NICS and I want to move over to the mvcs. 


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I am confused as this documentation states “Prism Central deploys the Network Controller that provides Flow Virtual Networking (application-driven network virtualization) as well as centralized VLAN management.”

In my mind Centralized VLAN management means being able to create/update/delete a VLAN across all cluster managed my PC.

This is in this guide - https://portal.nutanix.com/page/documents/details?targetId=Nutanix-Flow-Virtual-Networking-Guide-v7_0_0:ear-flow-nw-overview-pc.html