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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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(Optional) Discarding IPv6 Packets Sent from Users

(Optional) Discarding IPv6 Packets Sent from Users


On an IPv4 network, IPv6 packets are broadcast in a VLAN, and users can learn the MAC addresses of other users from the IPv6 packets. As a result, MFF cannot isolate users.

To prevent this problem, configure the MFF-enabled device to discard IPv6 packets sent from users.


  1. Run system-view

    The system view is displayed.

  2. Run vlan vlan-id

    The VLAN view is displayed.

  3. Run mac-forced-forwarding ipv6-isolate

    The MFF-enabled device is configured to discard the IPv6 packets received from user interfaces. This prevents IPv6 packets from being broadcast in the VLAN.

    By default, the MFF-enabled device does not discard IPv6 packets received from user interfaces.

Updated: 2019-04-01

Document ID: EDOC1000178319

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