Deployment Guide

8 D
ell EMC Networking - Deploying VMware vSAN with OS10 Enterprise Edition | version 1.0
vSAN cluster using four server nodes connected to a leaf pair of switches
3.2 vSAN networking recommendations
This section lists the networking recommendations used in the deployment example for vSAN clusters.
These recommendations can be found in the VMware Validated Design for SDDC documentation at
VMware
Validated Design Documentation.
The following recommendations are specifically used in the deployment example within this documentation,
but do not encompass the entire set of design decisions for the entire SDDC:
• CSDDC-PHY-NET-003: Use two ToR switches for each rack to provide redundancy.
• CSDDC-PHY-NET-004: Use VLANs to segment physical network functions.
• CSDDC-PHY-NET-008: Configure the MTU size to at least 9000 bytes (jumbo frames) on t
he
ph
ysical switch ports and distributed switch port groups that support vSAN and vMotion traffic.
• CSDDC-VI-NET-001: Use vSphere Distributed Switch (VDS).
• CSDDC-VI-NET-003: Use the route based on physical NIC load teaming algorithm for all port groups
except for ones that carry VXLAN traffic. VTEP kernel ports and VXLAN traffic use route based on
SRC-ID.
• CSDDC-VI-Storage-SDS-001: Use only 10 GbE for vSAN traffic.
• CSDDC-VI-Storage-SDS-003: Configure jumbo frames on the VLAN dedicated to vSAN traffic.
• CSDDC-VI-Storage-SDS-004: Use a dedicated VLAN for vSAN traffic for each vSAN enabled cluster.
• Administering VMware vSAN
(VMware vSAN 6.6.1) recommends the following for networking failover
and load balancing:
- When using the teaming algorithm Route based on physical network adapter load, the
recommended failover configuration is Active/Active.