NSX Edge MPA connectivity Down due to physical network issues

Products

• VMware NSX

Issue/Introduction

• Edge nodes in unknown status with "MPA Connectivity Down"
• The Edge is a virtual machine.
• Ping is failing between NSX Edge and the default gateway & NSX Manager: 
  • As root, SSH to the Edge node:

    ping <NSX_Manager_IP>
ping <default_gateway>

• Identify the ESXi host for each affected Edge node:
  • As root user, run the esxtop command (followed by 'n') to determine which physical adapter (vmnic) was being utilized by the Edge VM's primary vNIC.
• All Edge nodes experiencing the MPA connectivity issue were using the same underlying physical adapter.

Environment

VMware NSX

Cause

• This issue is caused by physical network issues preventing the Edge to reach the NSX Managers.

Resolution

• On the ESXi host running the Edge VM, perform a switchover from the active vmnic that is currently handling the Edge's management network traffic, to the standby uplink:
  How to Allocate Specific Uplinks to Port Groups on a vSphere Distributed Switch

Additional Information

NSX Edge shows configuration status as MPA Connectivity Down
Edge showing MPA Connectivity Down after storage/vSAN issues
NSX Edge node MPA Connectivity Down state due to expired transport node certificate
NSX Edge MPA Connectivity Down