Broadcast Storm Shuts Down DCS Consoles

Event Year: 1997 Reliability: Likely But Unconfirmed
Country: Canada
Industry Type: Pulp and Paper

The facility lost communications to the operator consoles on a steam plant DCS.  The problem was believed to be caused by an incorrectly configured Windows 95 workstation in another mill area that generated high levels of broadcast packets.


The DCS had to be removed from the mill network, preventing process data from being transferred to the business systems.

Action Description: Installation of separate subnets and VLANs for process control