Question

To isolate high-speed industrial traffic on a managed switch, what configuration must be applied to prevent broadcast storms from impacting device communication?

Accepted Answer

To isolate high-speed industrial traffic and prevent broadcast storms, you must configure Virtual Local Area Networks, commonly known as VLANs. A VLAN is a logical partition of a physical network that groups devices together as if they were on their own separate, private network. By assigning specific ports on a managed switch to a unique VLAN ID, you restrict broadcast traffic so it only travels to devices within that same VLAN. Broadcast traffic consists of network messages sent to every device on a subnet, which can overwhelm hardware and cause performance degradation, known as a broadcast storm, if too many devices share the same broadcast domain. By implementing VLANs, you shrink the size of the broadcast domain, ensuring that industrial traffic remains isolated from general office traffic and that broadcast packets do not flood ports handling sensitive industrial equipment. Additionally, you must enable Storm Control on the switch ports to set a threshold for the volume of broadcast traffic allowed. Storm Control monitors the amount of broadcast, multicast, or unknown unicast traffic and automatically drops packets or shuts down the port if the volume exceeds a pre-set limit, preventing the network from becoming unusable due to excessive traffic bursts.

Home → All Courses → Engineering and Technology Courses → Industrial Automation Engineering → Flashcard

To isolate high-speed industrial traffic on a managed switch, what configuration must be applied to prevent broadcast storms from impacting device communication?