two Switches distributed + two cluster vSphere HA

[ssdmnbrgs]

Hello!

I am putting together a drawing, and I would like to know if it is a best practice

use two switches distributed to two different clusters, with management networks on different subnets?

If anyone can provide an official KB, I appreciate it.

[Nawals]

Hi,

Here is the official VMware distributed dvSwtich best practice guide https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/techpaper/vsphere-distributed-switch-best-practices-wh…

[ssdmnbrgs]

Thank you!

However, I do not see the answer in this document to what I am looking for. I am still in doubt of using two dvsw with host in the management network using different subnet.

[Nawals]

You can design 2 dvswitch for 2 different cluster which will run in different network. It’s all about yours how you want to design. I shared the best practice dvswitch guide that we are following however, again it’s up to you to design as you are looking.

[NathanosBlightc]

Hi

Choosing a well-done designed structure for your distributed vSwitches is highly dependent on VI networking requirements. It's possible to put all of the hosts belong to different clusters on the same DVS, or create two separate DVS for the hosts of a single cluster, and selecting of each structure is rely on what you need on the network and its limitations, separations, hardening, isolation, and so many other factors.

Also for management network (VMkernel interfaces) design, it's recommended to separate their IP subnet and even VLAN ID (of course if you use it) from the virtual machines networks (subnets) with respect to the security considerations, because the virtual machines do not need to have access and inspect VMkernel networking at all (except those related to the VI management, like the VCSA and NSX manager)