"One of more transport node(s) realization failed while creating the transport node collection" error is displayed when creating a new workload domain in VCF 9

Products

• VMware NSX

Issue/Introduction

• In VCF 9 Operations you are creating a new workload domain.
• This fails in the UI with error:

One of more transport node(s) realization failed while creating the transport node collection with profile <uuid> on compute collection <uuid>:domain-c## through NSX Manager <NSX manager IP>

Cause: InvalidRequest (com.vmware.vapi.std.errors.invalid_request) (statusCode:400) => { messages = [], data = => [error_message=2 Hosts in Transport node collection <uuid>-domain-c## are incompatible with ENS based HostSwitchMode config in transport node profile /infra/host-transport-node-profiles/<uuid>. sample incompatible Host and Pnic info: x.x.x.1=[vmnic1],x.x.x.2=[vmnic1]. Remove ENS incompatible hosts from the cluster or use STANDARD as HostSwitchMode in the TransportNodeProfile., httpsStatus=BAD_REQUEST, error_code=609679, module_name=policy}, errorType = INVALIDA_REQUEST }

• Running the command esxcfg-nics -e on the host displays the vmnics available and their capabilities:

esxcfg-nics -e
Name    Driver      ENS Capable   ENS Driven    INTR Capable  INTR Enabled  MAC Address        Description
vmnic0  nenic       False                False              False                False                ##:##:##:##:##:##Cisco Systems Inc Cisco VIC Ethernet NIC
vmnic1  nenic       False                False              False                False                ##:##:##:##:##:##Cisco Systems Inc Cisco VIC Ethernet NIC

Environment

VCF 9

Cause

By default, VCF 9 will deploy transport node(s) using EDP (Enhanced Data Path), formally known as ENS (Enhanced Network Stack), if the host does not have physical nic(s) which support EDP, this error is displayed.

Please review the following guide for details on EDP Enhanced Data Path

In the above case, the host is using nenic drivers, these drivers do not support EDP, there is a Cisco driver called nenic_ens which does support EDP.

Resolution

Ensure the physical nic(s) of the host are compatible with EDP, if not, use a Standard host switch for transport nodes.

To check if a nic supports EDP, check the compatibility guide COMPATIBILITY GUIDE

If in doubt, please consult with the nic vendor.

For Cisco UCS, first confirm Geneve offload configuration is enabled on nenic driver

Please review the following guide for details on tuning to enable EDP on the nic Tuning Guidelines for Cisco UCS Virtual Interface Cards (White Paper)