Intermittent packet loss after Edge cutover during an NSX-v to NSX-T migration

Products

• VMware NSX

Issue/Introduction

• NSX 3.2.x, 4.x
• NSX-v to NSX-T migration using Migration Coordinator
• Intermittent packet loss is observed after completing the Edge migration phase
• The impacted VMs are still running on NSX-v hosts
• There are no log errors associated with this issue

Environment

VMware NSX 4.x
VMware NSX-T Data Center 3.x

Cause

After Edge migration phase, VMs on NSX-v hosts are routed via the NSX-T DR.
Due to incorrect handling by the NSX-T DR, ARP resolution is impacted which causes intermittent packet loss.

Resolution

This issue is resolved in VMware NSX 3.2.3.1
This issue is resolved in VMware NSX 4.1.1
This issue is resolved in VMware NSX 4.2.0

Workaround:
Proceed and complete the Host migration after which this issue will be resolved.