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VLANs and IP addresses used for VxRail node traffic must be planned before VxRail deployment can begin. VxRail node traffic is divided into six or more VLANs, as shown in Table 2.
Table 2. VLANs used by VxRail
VLAN | Purpose |
VxRail Cluster Build | Used to build the VxRail cluster. SFS automatically creates this VLAN and names it SFS Client Management. |
VxRail Internal Management | Used for VxRail node discovery. SFS automatically creates this VLAN and names it SFS Client Control. |
VxRail External Management | User-specified VLAN for VxRail Manager, ESXi, vCenter Server, NTP, DNS, and vRealize Log Insight traffic |
vMotion | User-specified VLAN for Virtual machine (VM) migration traffic |
vSAN | User-specified VLAN for distributed storage traffic |
VM network(s) | User-specified VLAN(s) as required for VM data traffic |
Note: All VLANs in Table 2 share the physical connections shown in Figure 11 in this deployment.
VLAN IDs and network addresses planned for this deployment example are shown in Table 3.
Table 3. VLAN IDs and network addresses
VLAN ID | Description | Network |
4091* | SFS Client Management / VxRail cluster build | 192.168.10.0/24 (default) |
3939* | SFS Client Control / VxRail Internal Management | IPv6 multicast |
1811 | External Management | 172.18.11.0/24 |
1812 | vMotion | 172.18.12.0/24 |
1813 | vSAN | 172.18.13.0/24 |
1814 | VM Network A | 172.18.14.0/24 |
1815 | VM Network B | 172.18.15.0/24 |
*Automatically created VLANs
Note: VLANs 4091 and 3939 are automatically created by SFS. VLANs 1811-1815 and their network IP addresses are user-defined and are examples only. In SmartFabric mode, VLAN IDs 2-3999, excluding 3939, are available for use. VLANs 4091 and 3939 may be changed from their defaults in the SFS GUI under 5. Edit Default Fabric Settings. VLAN 3939 is also a VxRail default VLAN. If VLAN 3939 is changed in the SFS GUI, you must also change it to match in VxRail per the VxRail documentation.
Note: VLAN IDs 1 and 4000-4094 are reserved for SFS. For more information about the reserved VLANs, see the SmartFabric Services for OpenManage Network Integration User Guide, Release 1.2. The guide is available on the Dell EMC OpenManage Network Integration for VMware vCenter web site.
Note: SFS uses the 172.16.0.0/16, and 172.30.0.0/16 IP address blocks internally for the leaf-spine network configuration. If these networks conflict with your environment, these default IP addresses blocks may be changed in the SFS GUI under 5. Edit Default Fabric Settings.
In SmartFabric mode, each VLAN in Table 3 is automatically placed in a VXLAN virtual network with a Virtual Network Identifier (VNI) that matches the VLAN ID. VLAN 4091 is in virtual network 4091, VLAN 1811 is in virtual network 1811, etc.
The show virtual network command is used to view virtual networks, VLANs, and port-VLAN assignments. This is covered in more detail later in this guide.