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CX11x, CX31x, CX710 (Earlier Than V6.03), and CX91x Series Switch Modules V100R001C10 Configuration Guide 12

The documents describe the configuration of various services supported by the CX11x&CX31x&CX91x series switch modules The description covers configuration examples and function configurations.
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Overview

Overview

This section describes the definition, and functions of traffic suppression and storm control.

Definition

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

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

NOTE:
Unknown unicast packets refer to unicast packets whose destination MAC addresses are not learned by the device.

Purpose

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 destination MAC addresses of packets. In this case, broadcast storms may occur on the network and forwarding performance of the device deteriorates.

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

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Updated: 2019-08-09

Document ID: EDOC1000041694

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