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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 network switch ports for VxRail connectivity

Set up the network switch ports for VxRail connectivity

  • Once the switch base settings are complete, the next step is to set up the switch ports.

    Perform the following steps for each switch port that has to be connected to a VxRail node:

    1. Configure the MTU size if using jumbo frames.
    2. Set the port to the appropriate speed or to auto-negotiate speed.
    3. Set spanning tree mode to disable transition to a blocking state, which can cause a timeout condition.
    4. Enable flow control receive mode and disable flow control transmit mode.
    5. Configure the External Management VLAN (Row 1) on the switch ports. If you entered Native VLAN, set the ports on the switch to accept untagged traffic and tag it to the native management VLAN ID. Untagged management traffic is the default management VLAN setting on VxRail.
    6. For VxRail version 4.7 and later, configure the Internal Management VLAN (Row 2) on the switch ports.
    7. If required, allow multicast on the VxRail switch ports to support the Internal Management network.
    8. Configure a VMware vSphere vMotion VLAN (Row 3) on the switch ports.
    9. Configure a vSAN VLAN (Row 4) on the switch ports. Allow unicast traffic on this VLAN.
    10. Configure the VLANs for your VM Networks (Rows 6) on the switch ports.
    11. Configure the optional vCenter Server Network VLAN (Row 7) on the switch ports.
    12. Configure the optional VxRail Witness Traffic Separation VLAN (Row 69) on the switch ports, if required.

      If link aggregation is configured on the switchport, some settings are configured on the port channel, and some are configured on the interface:

      • Configure the appropriate port channel or equivalent, depending on the switch operating system on the switch port.
      • Configure any additional network port settings that do not transfer from the port channel on the switch port.