NSX-V to NSX-T migration fails with "Error: 'NoneType' object has no attribute 'split',"

Products

• VMware Cloud Director

Issue/Introduction

The NSX-V to NSX-T migration for a vApp failed due to an invalid network parameter error when updating the NIC of a VM. The error message indicated that the specified IP address was invalid.

You may see:

• Migration failure with error seen in VCD debug logs: "Invalid network parameter: Specified IP address 'X.X.X.X' is invalid."
• NSX Migrator logs showed: "Error: 'NoneType' object has no attribute 'split'."
• VCD reported an issue locating the real_network backing for the logical_network.
• Attempts to refresh the database and test different NSX Migrator versions resulted in failed VM linking.

Environment

VMware Cloud Director 10.3.3.4
NSX Migrator tool 1.4.0

Cause

The External Network seen in the Provider portal had two entries.

The first network was disabled, but the NSX Migrator tool still detected it, causing the migration process to reference an unavailable IP address.

Resolution

1. Navigate to the External Network configuration in the Provider portal.
2. Remove or correct the disabled network entry.
3. Ensure that only valid, enabled networks are referenced by the migration tool.
4. Retry the migration process.