Which statement is true regarding the configuration of vSphere Standard Switches on ESXi 5.5
hosts?
A.
Additional ports must be manually added to a vSwitch when the configured number of ports has
been exhausted. The host requires a reboot when this configuration change is made.
B.
Additional ports must be manually added to a vSwitch when the configured number of ports has
been exhausted. The host does not require a reboot when this configuration change is made.
C.
Additional ports are automatically added to a vSwitch when the configured number of ports has
been exhausted. The host does not require a reboot when this configuration change is made.
D.
Additional ports are automatically added to a vSwitch as needed, and a set number of ports is
not configured. The host does not require a reboot when this configuration change is made.
D
Agree to D: https://pubs.vmware.com/vsphere-55/topic/com.vmware.ICbase/PDF/vsphere-esxi-vcenter-server-55-networking-guide.pdf
Page 20: “Für eine effiziente Verwendung der Hostressourcen wird auf ESXi 5.5-Hosts die Anzahl der Ports von virtuellen
Switches dynamisch nach oben und unten korrigiert. Ein Switch auf einem solchen Host kann auf die
maximale Anzahl von Ports, die auf dem Host unterstützt wird, erweitert werden. Der Portgrenzwert wird
bestimmt anhand der maximalen Anzahl von virtuellen Maschinen, die der Host verarbeiten kann.”
Uhhh… Time to learn German 😀
D.
In 5.1 is was manual, in 5.5 is automatic and based on the max number of VMs per host….
For hosts running ESXi 5.1 and earlier, you can configure the number of ports that are available on a
standard switch as the requirements of your environment change.
Each virtual switch on hosts running ESXi 5.1 and earlier provides a finite number of ports through which
virtual machines and network services can reach one or more networks. You have to increase or decrease
the number of ports manually according to your deployment requirements.
NOTE Increasing the port number of a switch leads to reserving and consuming more resources on the host.
If some ports are not occupied, host resources that might be necessary for other operations remain locked
and unused.
To ensure efficient use of host resources on hosts running ESXi 5.5, the ports of virtual switches are
dynamically scaled up and down. A switch on such a host can expand up to the maximum number of ports
supported on the host.