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Configuration Guide - Ethernet Switching

S1720, S2700, S5700, and S6720 V200R012(C00 and C20)

This document describes the configuration of Ethernet services, including configuring MAC address table, link aggregation, VLANs, VLAN aggregation, MUX VLAN, VLAN termination, Voice VLAN, VLAN mapping, QinQ, GVRP, VCMP, STP/RSTP/MSTP, VBST, SEP, RRPP, ERPS, LBDT, and Layer 2 protocol transparent transmission.
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Enabling the Voice VLAN Function

Enabling the Voice VLAN Function


To implement the voice VLAN function, configure the VLAN used to forward voice packets on the switch as a voice VLAN and enable the voice VLAN. You are advised to configure different VLANs for voice and data services to facilitate management.


  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number

    The interface view is displayed.

  3. Run voice-vlan vlan-id enable [ include-untagged | include-tag0 ]*

    A voice VLAN is configured and the voice VLAN function is enabled on the interface.

    By default, the voice VLAN function is disabled on an interface.

    • VLAN 1 cannot be configured as a voice VLAN.

    • To transmit different services, ensure that the voice VLAN and default VLAN on an interface are different VLANs.

    • Only one voice VLAN on an interface can be configured as a voice VLAN at a time.

    • After a voice VLAN is configured on an interface, VLAN mapping, VLAN stacking, or traffic policies cannot be configured on the interface.

    • When an IP phone sends packets tagged with VLAN 0, include-tag0 must be specified on the S5720EI, S6720EI, and S6720S-EI. On other models, include-untagged takes effect for untagged packets and packets tagged with VLAN 0.
    • If a VLAN is associated with a BD, it cannot be configured as a voice VLAN.

Updated: 2018-12-24

Document ID: EDOC1100038339

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