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Configuration Guide - Security

S1720, S2700, S5700, and S6720 V200R011C10

This document describes the configurations of Security, including 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, MPAC, separating the management plane from the service plane, security risks, PKI.
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Enabling SAVI

Enabling SAVI


To defend against attacks from invalid ND packets, DHCPv6 packets, and IPv6 data packets, configure the SAVI function. The device uses ND snooping and DHCPv6 snooping to create a table recording bindings between IP addresses and ports to check the validity of ND packets, DHCPv6 packets, and IPv6 data packets and filter out invalid packets.

Before configuring the SAVI function, enable the SAVI function.


After SAVI is enabled, only binding entries corresponding to IPv6 addresses with the FE80::/10 address prefix can be automatically generated, and no prefix entry is generated.


  1. Run system-view

    The system view is displayed.

  2. Run savi enable

    SAVI is enabled.

    By default, SAVI is disabled.

Updated: 2019-03-28

Document ID: EDOC1000178177

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