NSX Edge graceful failover does not occur after rebooting Edge or restarting dataplane

Products

• VMware NSX

Issue/Introduction

• An NSX Edge is rebooted, or the dataplane service is restarted via the restart service dataplane cli command.
• Graceful failover does not occur.
• An interruption in routing among the NSX Edge's BGP peers may be observed.

Environment

VMware NSX-T Data Center (3.x)
VMware NSX (4.x)
Multiple NSX Edges deployed

Resolution

This is expected behavior in VMware NSX.

Use Edge Maintenance Mode for graceful failover in order to bring down remote BGP and BFD sessions immediately as Edge reboot or restart may not.

Additional Information

Use Edge Maintenance Mode for graceful failover as workaround. This applies to all versions of Edge.

How to place the NSX-T Edge into NSX maintenance mode from cli