Not able to discover the MNB controllers on the MSTP trunk of an AS.

Issue

Not able to discover the MNB controllers on the MSTP trunk of an AS. However, all MNB controllers on the same AS trunk are discovered in WorkPlace Tech Commissioning Tool.

Product Line

SmartStruxure Solution

Environment

SmartStruxure, AS

Cause

The negative lead of the MS/TP AS network was shorted to ground.

Resolution

Examine all MS/TP wiring and correct any grounding issue.