VMware NSX 4.1.x
VMware NSX 4.2.0
The NSX manager controller service, is missing the bridge port for the bridge endpoint profile ID (schema type: vmware.nsx.nestdb.LogSwitchPortConfigMsg), due to the missing information, the bridge configuration was not pushed from the NSX Manager (MP) to the Edge node(s) (DP), which lead to the datapath interruption.
This issue is resolved in VMware NSX 4.2.1, available at Broadcom downloads.
If you are having difficulty finding and downloading software, please review the Download Broadcom products and software KB.
Workaround:
Create a new edge bridge profile with identical configuration, with the same edge cluster and Active/Standby edge nodes and assign it to the segments.
If this KB did not help resolve your issue, you can review the following KB for further troubleshooting steps: Troubleshooting NSX L2 Bridging