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S12700 V200R012C00 Configuration Guide - Ethernet Switching

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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Licensing Requirements and Limitations for Voice VLANs

Licensing Requirements and Limitations for Voice VLANs

Involved Network Elements

Other network elements are not required.

Licensing Requirements

The voice VLAN is a basic feature of a switch and is not under license control.

Version Requirements

Table 9-1  Products and versions supporting the voice VLAN


Product Model

Software Version


S12708, S12712

V200R005C00, V200R006C00, V200R007C00, V200R007C20, V200R008C00, V200R009C00, V200R010C00, V200R011C10, V200R012C00, V200R013C00


V200R010C00, V200R011C10, V200R012C00, V200R013C00


V200R008C00, V200R009C00, V200R010C00, V200R011C10, V200R012C00, V200R013C00

For details about software mappings, visit Hardware Query Tool and search for the desired product model.

Feature Limitations

  • The switch XGE interface connected to ET1D2IPS0S00, ET1D2FW00S00, ET1D2FW00S01, ACU2, or ET1D2FW00S02 does not support voice VLAN.

  • 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 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.

  • Do not set the VLAN ID to 0 on an IP phone.
  • The X series cards on modular switches do not support the automatic mode.
  • In auto mode, access, negotiation-auto, or negotiation-desirable interfaces cannot be added to a voice VLAN. To add the interface to the voice VLAN, run the port link-type command to change the link type of the interface to trunk or hybrid.
  • When an IP phone is connected to a switch through the OUI-based voice VLAN, disable LLDP on the interface. If LLDP is enabled on the interface, the switch will allocate a voice VLAN ID to the IP phone. The IP phone sends tagged packets to the switch, whereas the switch sends untagged packets to the IP phone. As a result, the IP phone cannot go online.
  • The automatic mode takes effect only when the voice-vlan remark-mode mac-address command is configured to increase the priority of voice packets based on MAC addresses and the voice-vlan enable command without include-untagged specified is configured to enable voice VLAN on the interface.
Updated: 2019-01-18

Document ID: EDOC1100038103

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