What is the VMware-recommended network configuration between the three sites in a vSAN stretched cluster?
A. L2 connectivity between the preferred and secondary sites, and L3 from the preferred and secondary sites to the witness site.
B. L3 connectivity between the preferred and secondary sites, and L2 from the preferred and secondary sites to the witness site.
C. L2 connectivity between all three sites.
D. L3 connectivity between all three sites.
The correct answer is A, https://storagehub.vmware.com/t/vmware-vsan/vsan-stretched-cluster-2-node-guide/networking-and-latency-requirements-1/
Layer 2 and Layer 3 Support
Both Layer 2 (same subnet) and Layer 3 (routed) configurations are used in a recommended vSAN Stretched Cluster deployment.
VMware recommends that vSAN communication between the data sites be over stretched L2.
VMware recommends that vSAN communication between the data sites and the witness site is routed over L3.
the new correct link to reference:
https://storagehub.vmware.com/t/vmware-vsan/vsan-2-node-guide/networking-and-latency-requirements-4/