An ESXi host configured as an NSX Transport Node is not able to communicate on the VLAN network with other ESXi host Transport Nodes

Products

• VMware NSX

Issue/Introduction

• An NSX Segment and Transport Zone (TZ) have already been configured for the VLAN network.
  *If not yet configured, refer to Create an NSX Segment and Create Transport Zones 
• Transport Node Profiles are not used in the NSX managed cluster or the host is a Standalone Host (not part of a cluster but configured in vCenter). If Transport Node Profiles are being used, refer to Replacing a Transport Zone in a prepared NSX cluster instead

Cause

The ESXi host has already been configured for NSX but has not been added to the Transport Zone associated with the VLAN-backed Segment.

Resolution

• Identify the Target Transport Zone.

1. 1. Navigate to System > Fabric > Transport Zones
      
      
   2. Find the specific TZ where the VLAN network is configured
      *Note: If you Filter the results you can select VLANs in the Filter type to search by VLAN ID
      
      
      

• Update the Host Configuration
  
  
  1. Navigate to System > Fabric > Hosts
     
     
  2. Find the host under the Clusters or Standalone tab
     
     
  3. Click the 3 vertical dots (Actions Menu) to the left of the host and select Manage Transport Zones
     
     
     
  4. Click into the box where the current TZ is listed. Available TZs will pop up in a list in the window.
     
     
     
  5. Click on the VLAN TZ from the list to add it to the host's configured Transport Zones and Click Save
     
     
• Test Connectivity: Test to make sure the host is now accessible over the VLAN by connecting a test VM to the VLAN-backed Segment and verifying network reachability.