New forest domain in vCenter


I have created forest domain in 2012R2

I want to use /8 addresses to start with

Using  as IP address, as subnet mask and as gateway

Have installed DNS and AD DS on server

We have 5 esxi hosts I have this machine on 1st one, there are a number of networks pointing back to the existing domain

I want to set physical nic to have internet address, I know Andrew mentioned adding vlan or physical nic to the host, is it possible to add a brand new physical nic for this, when i look into adding a nic, i see the same choices pointing back to existing domain

What is the best way to approach this?
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Indie101Author Commented:
I'm wary of doing it as per KB article looking to do this out of hours
Are there physical nics available or slots on the ESX host(s) ?  
Outage will be required to add a physical nic.

How many physical NIC's and vSwitches access the old network?

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