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Planning Guide—Dell EMC VxRail Network Planning
Planning Your Data Center Network for VxRail
Introduction VxRail hardware and the physical network infrastructure VxRail clusters, appliances, and nodes Network switch Data center network VxRail Ethernet port options VxRail Ethernet adapter options VxRail node connectivity options VxRail networking rules and restrictions Topology and connections

Data center network

  • VxRail is dependent of specific data center services to implement the cluster and for day-to-day operations. The top-of-rack switches must be configured to the upstream network to enable connectivity to these data center services, and to enable connectivity to the end-user community

    Data center services

    • Domain Naming Services (DNS) is required to deploy the VxRail cluster and for ongoing operations.
    • VxRail cluster depends on Network Time Protocol (NTP) to keep the clock settings on the various VxRail components synchronized. Dell Technologies recommends that a reliable global timing service be used for VxRail.
    • Syslog service is supported with VxRail, but is not required. 
    • VxRail depends on VMware vCenter for cluster management and operations. You can use either the embedded vCenter instance that is included with VxRail, or an external vCenter instance in your data center.

    Figure 5.              Connecting data center services with VxRail cluster

    Routing services

    VxRail cluster operations depend on a set of networks that run on both the virtual network inside the cluster and on the adjoining physical network switches. Some of these networks, specifically for VxRail management and for end-user access must be passed to the upstream network, while other VxRail networks can stay isolated on the adjoining network switches.

    You must specify a set of Virtual LAN (VLAN) IDs in your data center network that will be assigned to support the VxRail networks. All the VLANs must be configured on the adjoining physical switches connected to the VxRail nodes.

    One VLAN is assigned for external VxRail management access. Data center services (such as DNS and NTP) that are required by VxRail cluster must be able to connect to the external VxRail management network. Routing services must be configured to enable connectivity to these services from this network. Additional VLANs, such as those required for end-user access must also be configured to support routing end-users and external applications to the virtual machines running on the VxRail cluster.

    If Layer 3 routing services are not configured on the adjacent physical switches, the VLANs that need to pass upstream must be configured on adjoining network switch uplinks, and also on the ports on the upstream network devices, so they can pass through upstream to routing layer. If Layer 3 services are enabled on the adjacent physical switches, configure the VLANs that need to pass upstream to terminate at this layer, and configure routing services for these networks to pass upstream.

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VxRail Ethernet port options