VMware vMotion Network Troubleshooting Guide

!Issue

Diagnose vMotion failures caused by VMkernel configuration, VLANs, MTU, routing, DNS or physical network problems.

✓Solution

01 Confirm vMotion VMkernel settings

★Recommendations

06 Retry after one correction Repeat the migration after correcting the identified dependency and capture the new task result.

Verify vMotion is enabled on the intended VMkernel interface on both source and destination hosts.

Confirm vMotion VMkernel settings

Use vmkping from the vMotion VMkernel interface to test the actual path between hosts.

Compare VLAN IDs, trunk configuration and physical uplink assignment on both hosts.

If jumbo frames are configured, validate the same MTU across VMkernel interfaces and physical network devices.

Confirm the vMotion networks can reach each other and that host names resolve consistently when the environment requires name resolution.

Repeat the migration after correcting the identified dependency and capture the new task result.

Continue with practical infrastructure troubleshooting, PowerShell scripts and operational runbooks.