NSX-T Edge transport node page does not load and times out after 15 minutes

Products

• VMware NSX

Issue/Introduction

• The page in NSX-T UI  System -> Fabric -> Nodes -> Edge Transport Node does not load and times out after 15 minutes. 
• The compute manager (vCenter) connection shows down

Environment

VMware NSX-T

Cause

NSX-T manager does a validation check with the compute manager (vCenter) connection while is loading the Edge Transport node page. If the connection is down, then the page won't load.

Resolution

This issue is resolved in NSX-T 3.1.3 and later versions.

Workaround:

Verify that ports 443 and 80 are open between NSX-T manager cluster and the compute manager (vCenter).

Follow the steps below to verify port connectivity:

• Log into the NSX-T Manager:
• • Open an SSH session and connect to the NSX-T Manager CLI.
• Run Telnet or nc (Netcat) Commands:
  • Use the following commands to test connectivity on ports 80 and 443 from the NSX-T Manager to the vCenter server:
  • For port 443:
    • nc -zv <vCenter_IP> 443
  • For port 80:
    • nc -zv <vCenter_IP> 80
• Replace <vCenter_IP> with the actual IP address of your vCenter server.
• Review Command Output:
  
  • If the connection is successful, you should see output confirming that the port is open (e.g., “succeeded” message).
  • If the port is blocked, you will receive a message indicating that the connection failed, which suggests that a firewall might be blocking the port.
• Check Firewall Rules (if applicable):
  • If you’re unable to connect, review your firewall settings to ensure that ports 80 and 443 are allowed between NSX-T Manager and the compute manager (vCenter).