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Dell VxRail Network Planning Guide
Introduction Plan the VxRail network VxRail Cluster Types VxRail feature-driven decision points VxRail hardware and switch selection decision points Prepare the data center to implement VxRail Plan the VxRail cluster implementation Planning vSAN Witness Networking Planning VxRail Satellite Nodes Networking Configure the Network for VxRail
Configure the Network for VxRail
Setting up the network switch for VxRail connectivity
Configure multicast for VxRail internal management network Configure unicast for VxRail vSAN network Configure VLANs for the VxRail networks Configure the inter-switch links Configure switch port mode Configure LAG Limit spanning tree protocol Enable flow control
Set up the network switch ports for VxRail connectivity
Set up the upstream network for VxRail connectivity
Configure your network to support RoCE
Confirm your data center network
Confirm your firewall settings
Confirm your data center environment
Prepare to build the VxRail cluster VxRail network considerations after implementation Appendix A: VxRail Network Configuration Table Appendix B: VxRail Passwords Appendix C: VxRail cluster setup checklist Appendix D: VxRail Open Ports Requirements Appendix E: VMware VDS port group default settings Appendix F: Physical Network Switch Examples

Set up the upstream network for VxRail connectivity

Set up the upstream network for VxRail connectivity

  • The upstream network from the VxRail cluster must be configured to allow passage for VxRail networks that require external access.

    Using Appendix A: VxRail Network Configuration Table as a reference, upstream passage is required for the External Management VLAN (Row 1), any VM Network VLANs (Row 6), and the optional vCenter Server Network VLAN (Row 7). If a vSAN witness is required for the VxRail cluster, include the VxRail Witness Traffic Separation VLAN (Row 74) for upstream passage. The VxRail Internal Management VLAN (Row 2) must be blocked from outbound upstream passage.

    Optionally, the vSphere vMotion VLAN (Row 3) and vSAN VLAN (Row 4) can be configured for upstream passage. If you plan to expand the VxRail cluster beyond a single rack, configure the VxRail network VLANs for either stretched Layer 2 networks across racks, or to pass upstream to routing services if new subnets will be assigned in expansion racks.

    Figure 68. Logical networks connecting to upstream elements. Logical networks connecting to upstream elements
    Logical networks connecting to upstream elements
    If your Layer 2/Layer3 boundary is at the lowest network tier (ToR switch), perform the following tasks:
    • Configure point-to-point links with the adjacent upstream switches.
    • Terminate the VLANs requiring upstream access on the ToR switches.
    • Enable and configure routing services for the VxRail networks requiring upstream passage.
    If your Layer 2/Layer3 boundary is upstream from at the lowest network tier (ToR switch), perform the following tasks:
    • Connect ports on the adjacent upstream switch to the uplinks on the ToR switches.
    • Configure logical pairings of the ports on the adjacent upstream switch and the ToR switch.
    • Configure the logical port pairings, commonly known as port channels or Ether Channels, to allow upstream passage of external VxRail networks.