VCenter server is not accessible after shutdown and power on

Products

• VMware vCenter Server

Issue/Introduction

vCenter server was not accessible after reboot or shutdown, upon powering back online it cannot connect to its allocated VLAN and no network connection.

Environment

vCenter 7.x

vCenter 8.x

Cause

Possible VLAN issues on the customer environment

Resolution

a. On the vCenter > Edit settings > choose the network > change the allocated VLAN temporarily to VM network > Click OK to save settings

b. Back again to  > > Edit settings > choose the network > change back from VM network to its original VLAN settings > Click OK to save settings.

c. Reboot vCenter 

d. Verify network connectivity of the vCenter (VAMI, Web-UI and ssh console).