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Planning Guide—VMware Cloud Foundation 5.x on VxRail
Executive Summary VMware Cloud Foundation on VxRail VMware Cloud Foundation on VxRail Requirements and Use Cases VMware Cloud Foundation on VxRail Workload Domain Planning Data Center and Network Requirements Cloud Foundation on VxRail High-Level Design Decisions Cloud Foundation on VxRail Workload Planning Cloud Foundation on VxRail Licensing Planning Cloud Foundation on VxRail Physical Network Planning Cloud Foundation on VxRail Physical Network Preparation
Introduction
Capture configuration settings for Cloud Foundation on VxRail
VxRail cluster and NSX networks leaf switch preparation
DHCP services for NSX host overlay network preparation
Leaf switch preparation for NSX edge
Layer 3 network preparation
BGP peering preparation
Firewall rules
VxRail Cluster Deployment Preparation Prepare for VMware Cloud Foundation Management VI Workload Domain Prepare for Cloud Foundation VI Workload Domain Prepare for NSX Edge Gateway Services Prepare for Cloud Foundation Application Virtual Network Cloud Foundation On VxRail Housekeeping Tasks Appendixes

DHCP services for NSX host overlay network preparation

DHCP services for NSX host overlay network preparation

  • NSX host overlay network preparation

    Two additional virtual NICs are created on each VxRail node to support the host overlay network during the initial deployment of Cloud Foundation on VxRail. This overlay network uses encapsulation to enable the passage of Layer 2 traffic across transport zones in the VI workload domains with a Layer 3 network. Each virtual NIC supporting the overlay network requires a routable IP address.

    You can have these IP addresses input into Cloud Builder and assigned to the NICs during Cloud Foundation on VxRail deployment, or leverage DHCP services for IP address assignment. If your requirements include deploying VxRail stretched clusters to support Cloud Foundation, DHCP is the only supported method for IP address assignment.

    1. Prepare a pool of IP addresses that is at least equal to double the number of VxRail nodes planned for the deployment.
    1. Deploy a DHCP server in the data center, if necessary.
    2. Configure the pool of IP addresses for DHCP services to support the NSX host overlay network.
    3. Configure the data center network so that NSX host overlay network can reach the DHCP server.

    Figure 52.    NSX host overlay uplinks IP addresses assigned by DHCP

    Note: If the VLAN cannot be extended out to the DHCP server, enabling ‘DHCP helper’ services on the host overlay VLAN is recommended, if supported on the leaf switches.

    Figure 53.    DHCP helper connects DHCP services to host overlay VLAN