One of the key requirements to configure the transport nodes is to attach the default or custom Uplink Profile.

The uplink profile is a template that defines how an N-VDS connects to the physical network. It specifies:

• Format of the uplinks of an N-VDS [Active/Standby links]
• Teaming policy applied to those uplinks
• transport VLAN used for overlay traffic
• MTU of the uplinks

Uplink profiles allow you to consistently configure identical capabilities for network adapters across multiple hosts or nodes.

Create custom Uplink Profile:

• From a browser, log in with admin privileges to an NSX Manager

• Select Fabric > Profiles > Uplink Profiles and click Add.

• Name: <Enter an uplink profile name>
• Description: <Add an optional uplink profile description>
• Teaming Policy: The teaming policy defines how the hostswitch uses its uplink for redundancy and traffic load balancing. There are two types of NIC teaming policies:
  • Failover Order:
    • An active uplink is specified along with an optional list of standby uplinks.
    • If the active uplink fails, the next uplink in the standby list replaces the active uplink.
    • Can be used on ESXi & KVM hosts
    • There is no load balancing between the physical network adapters
  • Load Balanced Source:
    • A list of active uplinks is specified, and each interface on the transport node is pinned to one active uplink.
    • Uses all of the active uplinks
    • This policy is not supported for the KVM hosts.
• LAGS: (Optional) Link aggregation groups (LAGs) using Link Aggregation Control Protocol (LACP) for the transport network.
  • Note For LACP, multiple LAG is not supported on KVM hosts.
• Active Uplinks: Add a comma-separated list of active uplink names. The active and standby uplink names you create can be any text to represent physical links.
• Standby Uplinks: Add a comma-separated list of standby uplink names.
• MTU: The default value is 1600.
• Click SAVE

Custom Uplink profile:

The NSX-T edges does not support Standby Uplinks.

NSX-T Documentation:

https://docs.vmware.com/en/VMware-NSX-T/index.html

Related Posts:

• NSX-T 2.1 Complete video series: 
• Introduction to NSX-T
• NSX-T Architecture
• Deploy NSX-T Manager Virtual Machine on ESXi host
• Configure NSX-T Control cluster 
• Prepare ESXi host as fabric node in NSX-T
• Prepare KVM hosts as fabric Node in NSX-T
• How to add vCenter Server as Compute Manager?
• What is N-VDS or hostSwitch in NSX-T?
• How to create Transport Zones in NSX-T?