Discovery is not working between NATed hub and Primary with Proxy hub in the middle

Products

• DX Unified Infrastructure Management (Nimsoft / UIM)

Issue/Introduction

Configuration that is using a layout similar to the following is not allowing discovery to take place correctly:

PHUB > PROXY HUB (via IP #1) = PROXY HUB (via IP #2) < NAT IP HUB via tunnel

Environment

Release : 20.3

Component : UIMHUB

Resolution

This type of configuration requires that there would be a tunnel between the PHUB to PROXY HUB (via IP #1) as well as a tunnel between the PROXY HUB (via IP #2)  and the NAT IP HUB.