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A vSphere administrator creates a new vSphere Distributed Switch. The administrator receives notice from the service desk that a cluster of vSphere hosts has disconnected from vCenter Server. This disconnect occurred immediately after the new switch was created.
This vSphere Distributed Switch is the only distributed switch managed by vCenter.
The virtual machines are still functional and the applications are still accessible by end users.
On the ESXi hosts, which step must the vSphere administrator take to allow vCenter Server to reconnect?
A. Use the Direct Console User Interface to reattach the management vmnic to the appropriate switch
B. Use the Direct Console User Interface to disable lockdown mode on each affected host
C. Use the ESXi Shell to restart the mgmt-vmware service on each affected host
D. Use the ESXi Shell to restart the vSphere Web Client service on each affected host
Correct Answer: A
Explanation/Reference:
Explanation:
A local ephemeral port is created and the VLAN and uplink configuration is applied to the port by the Direct Console User Interface (DCUI). The DCUI also replaces the VMkernel adapter for the management network to use the new host local port to restore connectivity to vCenter Server.
Incorrect Answers:
B: Lockdown Mode increases the security of your ESXi host, it will not allow vCenter Server to reconnect.
C: The mgmt-vmware service’s main objective is to restart hostd, which is an application running on the Service Console that has insight to what the ESX host manages. It does not, however, allow vCenter Server to reconnect.
D: The vSphere Web Client service allows you access to a dynamic, web-based user interface for managing a virtual infrastructure and enables vSphere administrators to manage their infrastructure without needing to install the Windows-based vSphere Client on a system. It does not, however, allow vCenter Server to reconnect.
References:
https://pubs.vmware.com/vsphere-55/topic/com.vmware.ICbase/PDF/vsphere-esxi-vcenter-server-55-troubleshooting-guide.pdf
http://sflanders.net/2010/02/25/have-you-restarted-your-management-services-today/