Unable to import due to these unsupported features: Identity Firewall, Isolated Segments without connectivity

Products

• VMware NSX

Issue/Introduction

When importing an LM to GM, they receive the following error: "Unable to import due to these unsupported features: Identity Firewall, Isolated Segments without connectivity", with "Entity ISOLATED_SEGMENTS_COUNT at site <Local Manager name>  is not supported for configuration import on GM. Please delete entity ISOLATED_SEGMENTS_COUNT from the site <Local Manager name> and try again."

Cause

Overlay segments are replicated to sites based on the span of the attached Tier0/Tier1 gateway. In the case of isolated overlay segments, the span is not available and they are not replicated to any site. 

Resolution

1. Add the Overlay segments to Tier0/Tier1 gateways. 
2. Delete the isolated overlay segments.