Correct. If you see the static port is assigned by default during vm provisioning which is reserved for a vm. On a vCenter level, all network configuration is applied during appliance deployment in second part, so there’s no network disruption.
You can use vDS 5.5 with esxi 5.5 and later version, but remember you won’t able to use this with older versions of esxi once you upgraded. For example, if you upgrade vDS from version 5.5 to 6.0, only esxi 6.0 and later will be supported. You need to upgrade esxi 5.5 before to 6.0 in order to use that switch on those hosts.
