Which are the two network requirements for a VMware vSAN 6.5 cluster? (Choose two.)
A.
Multicast must be enabled on the physical switches and routers that handle vSAN traffic.
B.
vSAN requires IPv6 only.
C.
All hosts must have a dedicated 40GbE NIC.
D.
The vSAN network supported IPv4 or IPv6.
E.
vSAN requires IPv4 only.
Explanation:
The vSAN network supports both IPv4 and IPv6.
https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.virtualsan.doc/GUIDAFF133BC-F4B6-4753-815F-20D3D752D898.html
http://cormachogan.com/2014/01/21/vsan-part-15-multicast-requirement-for-networking-misconfigurationdetected/
Puh, that is not easy if you’re looking for vSAN 6.5 or earlier.
To be clear: Here we go for A and D (since vSAN 6.5 we don’t need Multicast anymore).
Sources:
https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.virtualsan.doc/GUID-031F9637-EE29-4684-8644-7A93B9FD8D7B.html#GUID-031F9637-EE29-4684-8644-7A93B9FD8D7B
In vSAN 6.6 and later releases, multicast is not required on the physical switches that support the vSAN cluster. You can design a simple unicast network for vSAN. Earlier releases of vSAN rely on multicast to enable heartbeat and to exchange metadata between hosts in the cluster. If some hosts in your vSAN cluster are running earlier versions of software, a multicast network is still required. For more information about using multicast in a vSAN cluster, refer to an earlier version of Administering VMware vSAN.
Source:
https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.virtualsan.doc/GUID-AFF133BC-F4B6-4753-815F-20D3D752D898.html
Pv4 and IPv6 support
The vSAN network supports both IPv4 and IPv6.
TYPO!!!
To be clear: Here we go for A and D (since vSAN 6.6 we don’t need Multicast anymore).
AD