With 2 ESX hosts - I created two new standard switches on both and created portgroups. Default Network label provided was VM Network 3. I didnt bother to change it, as this is for a test set-up.
I had few VMs on both of them. Edited the settings and chose the new network label VM Network 3. Since i had to create more switches, i renamed the network label of the port group to vpNet. Immediately all the VM's got disconnected from the portgroup.
Is this an expected behavior?
After manually editing the settings of each of the VMs and choosing the new label vpNet only i was able to re access the VMs.