In this design, you use NSX-T Data Center to provide network connectivity for tenant workloads by using virtual network segments and routing.

NSX-T Data Center

NSX-T Data Center provides network virtualization capabilities in workload domains. With network virtualization, networking components that are usually part of the physical infrastructure, can be programmatically created and managed by using this software-defined network (SDN) platform. NSX-T Data Center provides both a declarative intent-based policy model, and an imperative based model to define and manage the SDN.

The deployment of NSX-T Data Center includes management, control plane, and services components.

NSX-T Manager

NSX-T Manager provides the user interface and the RESTful API for creating, configuring, and monitoring NSX-T components, such as virtual network segments, and Tier-0 and Tier-1 gateways.

NSX-T Manager implements the management and control plane for the NSX-T infrastructure. NSX-T Manager is the centralized network management component of NSX-T, providing an aggregated view on all components in the NSX-T Data Center system.

Table 1. Components of NSX-T Manager

Component

Description

Services

  • Logical switching and routing

  • Networking and edge services

  • Security services and distributed firewall

RESTful API

You can automate all configuration and monitoring operations by using any cloud automation platform, security vendor platform, or automation framework.

Management Plane Agent (MPA)

Available on each ESXi host. The MPA is in charge of persisting the desired state of the system and for communicating non-flow-controlling (NFC) messages such as configuration, statistics, status, and real-time data between transport nodes and the management plane.

NSX-T Controller

NSX-T Controllers implement the central control plane (CCP). They control the virtual networks and overlay transport tunnels. The controllers are responsible for the programmatic deployment of virtual networks across the entire NSX-T architecture.

The CCP is logically separated from all data plane traffic, that is, a failure in the control plane does not affect existing data plane operations. The controller provides configuration to other NSX-T Data Center components, such as segment, gateway, and edge node configuration.

Integration with vCenter Server

NSX-T Data Center components are not assigned to a specific vCenter Server or vSphere construct. You can share them across different vSphere environments.

NSX-T Edge Nodes

An NSX-T Edge node is a special type of transport node which contains service router components.

NSX-T Edge nodes provide north-south traffic connectivity between the physical data center networks and the NSX-T SDN networks. Each NSX-T Edge node has multiple interfaces where traffic flows.

You also use the NSX-T Edge nodes in east-west traffic flow between virtualized workloads. They provide stateful services such as load balancers and DHCP.