Checklist Summary for vSAN Network

Use the checklist summary to verify your vSAN network requirements.

• Check if you use shared 10Gb NIC or dedicated 1Gb NIC. All-flash clusters require 10Gb NICs.
• Verify that redundant NIC teaming connections are configured.
• Verify that flow control is enabled on the ESXi host NICs.
• Verify that VMkernel port for vSAN network traffic is configured on each host.
• Verify that you have identical VLAN, MTU and subnet across all interfaces.
• Verify that you can run vmkping successfully between all hosts. Use the health service to verify.
• If you use jumbo frames, verify that you can run vmkping successfully with 9000 packet size between all hosts. Use the health service to verify.
• If your vSAN version is earlier than v6.6, verify that multicast is enabled on the network.
• If your vSAN version is earlier than v6.6 and multiple vSAN clusters are on the same network, configure multicast to use unique multicast addresses.
• If your vSAN version is earlier than v6.6 and spans multiple switches, verify that multicast is configured across switches.
• If your vSAN version is earlier than v6.6 and is routed, verify that PIM is configured to allow multicast routing.
• Ensure that the physical switch can meet vSAN requirements (multicast, flow control, feature interoperability).
• Verify that the network does not have performance issues, such as excessive dropped packets or pause frames.
• Verify that network limits are within acceptable margins.
• Test vSAN network performance with iperf, and verify that it meets expectations.