Traffic suppression can limit the rates of broadcast, unknown multicast, unknown unicast, known multicast, and known unicast packets by setting thresholds. This prevents broadcast storms caused by broadcast, unknown multicast, and unknown unicast packets and the impact incurred by a large number of known multicast and known unicast packets.
Storm control blocks broadcast, unknown multicast, and unknown unicast packets by blocking packets or disabling related interfaces.
When receiving broadcast packets, unknown multicast packets, and unknown unicast packets, a switch forwards the packets to other Layer 2 Ethernet interfaces in the same VLAN if the switch cannot determine the outbound interface based on the destination MAC addresses of packets. When this happens, broadcast storms may occur on the network and forwarding performance of the device will deteriorate.
When an Ethernet interface on a switch receives known multicast or unicast packets, the heavy traffic of a certain type of packets may affect the processing of other services on the switch.
Traffic suppression and storm control can control these packets effectively.