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Configuration Guide - Security

S7700 and S9700 V200R011C10

This document describes the configurations of Security, including ACL, reflective ACL, local attack defense, MFF, attack defense, traffic suppression and storm control, ARP security, port security, DHCP snooping, ND snooping, PPPoE+, IPSG, SAVI, URPF, keychain, separating the management plane from the service plane, security risks.
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Configuring Traffic Suppression on an Interface

Configuring Traffic Suppression on an Interface


Excess broadcast, unknown multicast, or unknown unicast packets will cause broadcast storms. You can configure traffic suppression for a specified type of packet on an interface to limit the rate of these packets.


You can configure suppression on broadcast, unknown multicast, and unknown unicast traffic on the same interface.

When a VLANIF interface corresponding to a Layer 2 interface with a non-0 traffic rate limit connects to a VLL, traffic suppression on the interface does not take effect.

The SA series cards support only the pps mode (number of packets per second).

Pre-configuration Tasks

Before configuring traffic suppression on an interface, configure link layer protocol parameters for interfaces to ensure that the link layer protocol status on the interfaces is Up.


  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number

    The interface view is displayed.

  3. Run { broadcast-suppression | multicast-suppression | unicast-suppression } { percent-value | cir cir-value [ cbs cbs-value ] | packets packets-per-second }

    Traffic suppression is configured.

  4. Run { broadcast-suppression | multicast-suppression | unicast-suppression } block outbound

    The interface is configured to block outgoing packets.

Updated: 2019-09-23

Document ID: EDOC1000178319

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