HCX vMotion migration Fails due to IP duplication

Products

• VMware HCX

Issue/Introduction

Customers might experience the below error while performing the vMotion migration of VM's from an on-prem service mesh to a target site.

 

A general system error is generated with the below error message 

Migrationto host <###########> failed with error Connection closed by remote
host, possibly due to timeout (#######). 2024-10-21T19:45:22.073486Z vMotion
migration [##############################################) failed to receive
68/68 bytes from the remote host <############>: Connection closed by
remote host, possibly due to timeout vMotion migration
[#############################] failed to send init message to the remote host
<##########>

 

 VM vmotion fails at 29% stating that remote connection is closed by the remote hosts

Environment

VMware HCX 4.10

Cause

Detected that IP was duplicated and was being used at a different site from same IP pool range. This was causing migration to fail at relocating tasks on both source and target side.

Resolution

A separate IP pool range was created to be assigned to the network profiles.

A new Service Mesh was created and paired to the remote site in HCX as part of Service mesh creation. 

The original Service Mesh was deleted and configured the correct IP range in Network Profile in HCX for the new service mesh.

RAV and vMotion migrations were tested afterwards and every task finished successfully.