Unable to reload or upgrade firmware on a controller.


Controller drops offline when reloaded or when an attempt to flash firmware is made.

Product Line

Andover Continuum


  • Infinet
  • MSTP


Massive CRC errors on the MSTP bus due to a bad controller on one leg of blink.


  • In this case the problem was due to a bad controller on the bus. 
  • The offending controller was located by segmenting the bus to determine which legs were introducing this problem.
  • Once it was determined which controller was causing this issue, the controller was removed and a replacement installed.