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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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Enabling MFF in a VLAN

Enabling MFF in a VLAN


You can perform other MFF configurations in a VLAN only after enabling MFF in the VLAN.


  1. Run system-view

    The system view is displayed.

  2. Run vlan vlan-id

    The VLAN view is displayed.

  3. Run mac-forced-forwarding enable

    MFF is enabled in the VLAN.

    By default, MFF is disabled in a VLAN.


    MFF cannot be enabled in a VLAN where the super-VLAN or VLANIF interface is configured.

    MFF cannot be enabled in a sub-VLAN where the super-VLAN and VLANIF interface are configured.

    The device supports combination of 1:1 VLAN mapping and MFF. MFF can be configured in translated VLANs of VLAN mapping entries.

    When the number of MFF-enabled VLANs reaches the limit, the MFF function can still be enabled in other VLANs if there are ample ACL resources on the device.

Updated: 2019-09-23

Document ID: EDOC1000178319

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