We are having to change the ip range on our network, due to running out of ip addresses.
The IPs have been changed on the ESXi hosts and they can be accessed across the network, but when changing the IP on any VM on any host, they can't be accessed from the network, they also can't see each other.
We are not currently running any vLans, we are running ESXi 5.5, the VMs are Windows 2012 DC.
The subnet and gateway has been changed, and all physical devices can be accessed and are working, I have tried removing the virtual NIC and re-adding it with no luck.
The vm does report a strange IP address under the VMware summary page in vSphere client, and the range on each NIC within vSphere still shows the old network, but it's my understanding this can't be changed as it is non editable and updates itself.
Any help is greatly appreciated, as currently all my virtual servers are down