VMware recommends Layer 2 connectivity between all vSAN hosts sharing the subnet.
vSAN also supports deployments using routed Layer 3 connectivity between vSAN hosts. You must consider the number of hops and additional latency incurred while the traffic gets routed.
| Cluster Type |
L2 Supported |
L3 Supported |
Considerations |
|---|---|---|---|
| Hybrid Cluster |
Yes |
Yes |
L2 is recommended and L3 is supported. |
| All-Flash Cluster |
Yes |
Yes |
L2 is recommended and L3 is supported. |
| vSAN Stretched Cluster Data |
Yes |
Yes |
Both L2 and L3 between data sites are supported. |
| vSAN Stretched Cluster Witness |
No |
Yes |
L3 is supported. L2 between data and witness sites is not supported. |
| Two-Node vSAN Cluster | Yes | Yes | Both L2 and L3 between data sites are supported. |
