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CLI-based Configuration Guide - Security

AR500, AR510, AR531, AR550, AR1500, and AR2500 V200R010

This document provides the basic concepts, configuration procedures, and configuration examples in different application scenarios of the network management feature supported by the device.
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Overview of Traffic Suppression and storm control

Overview of Traffic Suppression and storm control


Traffic suppression and storm controlcan control broadcast packets, multicast packets, and unknown unicast packets and to prevent broadcast storms caused by these packets.

Traffic suppression limits the traffic by setting a threshold, and storm control limits the traffic by shutting down or block an interface.


Unknown unicast packets refer to unicast packets whose destination MAC addresses have not been learned by the device.


When receiving broadcast packets, multicast packets, and unknown unicast packets, the device forwards the packets to other Layer 2 Ethernet interfaces in the same VLAN if the device 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.

Traffic suppression and storm control can control these packets and prevent broadcast storms.

Updated: 2019-08-09

Document ID: EDOC1100034236

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