Although VMware supports using a VLAN other than VMware vSAN VLAN for Witness Traffic Separation (WTS), VxRail requires the WTS network to use its own VLAN. This layout is specific to the VxRail 2-node cluster with VMware vSAN.
The following table outlines the network layout that VxRail uses in the configuration of a 2-node cluster:
Table 1. Network layout for VxRail 2-node clusters with VMware vSANNetwork layout for VMware vSAN 2-node clusters
Traffic
Requirements
Members
NIOC shares
UPLINK1
UPLINK2
UPLINK3
UPLINK4
VMNIC0
VMNIC1
VMNIC2
VMNIC3
Management network
Same VLAN as the VMware vCenter Server network.
ESXi vmk2
40
Standby
Active
Unused
Unused
VMware vCenter Server network
Same VLAN as the management network
VMware vCenter Server, VxRail Manager, vNIC0
N/A
N/A
N/A
Unused
Unused
VxRail Management
VLAN 3939.
Cannot change the physical port.
VMware ESXi vmk0, VxRail Manager, vNIC1 (new)
N/A
Standby
Active
Unused
Unused
Witness traffic
ESXi vmk5
Active
Standby
VMware vSAN
N/A
ESXi vmk3
100
Unused
Unused
Active
Standby
VMware vSphere vMotion
N/A
ESXi vmk4
50
Unused
Unused
Standby
Active
VMs
N/A
VMs
60
Active
Standby
Unused
Unused
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