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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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Voice VLAN Typical Networking

Voice VLAN Typical Networking

As shown in Figure 9-1, a PC and an IP phone connect to a switch interface simultaneously. Therefore, the switch interface transmits both voice and data services.
Figure 9-1  Connecting a PC and an IP phone to a switch

The connection mode in Figure 9-1 is widely used on networks.

Figure 9-2 shows another connection mode, in which only an IP phone connects to a switch interface.
Figure 9-2  Connecting an IP phone to a switch

Some IP phones (for example, Cisco 7962) send tagged voice packets and some IP phones (for example, Huawei MC850) send untagged voice packets. The following sections describe how the MAC address-based voice VLAN and VLAN ID-based voice VLAN transmit tagged and untagged voice packets.

Updated: 2019-01-18

Document ID: EDOC1100038103

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