HCX migrated VM's from NSX for vSphere to NSX-T may loss network connectivity
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HCX migrated VM's from NSX for vSphere to NSX-T may loss network connectivity

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Article ID: 322504

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Updated On:

Products

VMware NSX

Issue/Introduction

Symptoms:
  • After a VM is migrated from an NSX for vSphere environment to NSX-T environment using HCX, the VM may loss network connectivity for several minutes.
  • After this connectivity will resume again.
  • The Segment Security Profile used on the segment in NSX-T has Non-IP Traffic Block enabled.
  • The default Segment Security Profile has Non-IP Traffic Block disabled.
  • After a VM is migrated, a RARP is sent from the VM, this is meant to announce its new location and flush any stale cache.


Environment

VMware NSX-T Data Center

Cause

When the non default Segment Security Profile is used and has Non-IP Traffic Block enabled, this RARP packet will be dropped.

Resolution

This is a known issue impacting NSX-T data center.

Workaround:
Disable Non-IP Traffic Block on the Segment Security Profile used on the segment.
Please review the following guide on how to edit or create Segment Security Profiles Create a Segment Security Segment Profile.