Communication channel is down for longer duration between Manager node and Transport node Alarm in NSX Manager

Products

• VMware NSX

Issue/Introduction

Title: Alarm for communication.management_channel_to_transport_node_down_long
Event ID: communication.management_channel_to_transport_node_down_long

Alarm Description

• Purpose: Alarm is raised when messaging channel between Manager Node and Transport node is down for more than 15 minutes.
• Impact: Possible functionality impacts include: 
  1. Config push from Manager node to Transport node will fail.
  2.  Monitoring status, stats and alarms would not be received by Manager node from the impacted Transport node.

Environment

VMware NSX-T Data Center

Resolution

Steps to Resolve

For 3.0.2 and higher

 

Resolution:

1. Ensure there is network connectivity between the impacted Manager node and Transport node and no firewalls are blocking traffic between the nodes.
2. On Windows Transport nodes, ensure the nsx-proxy service is running on the Transport node by invoking the command `C:\NSX\nsx-proxy\nsx-proxy.ps1 status` in the Windows PowerShell. If it is not running, restart it by invoking the command `C:\NSX\nsx-proxy\nsx-proxy.ps1 restart`.
3. On all other Transport nodes, ensure the nsx-proxy service is running on the Transport node by invoking the command `/etc/init.d/nsx-proxy status`. If it is not running, restart it by invoking the command `/etc/init.d/nsx-proxy restart`.

Maintenance window required for remediation? No

Additional Information