Cisco 500 Series - Voice VLAN

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VLAN Management

Voice VLAN

Cisco 500 Series Stackable Managed Switch Administration Guide 276

STEP 4 Click Apply. The protocol ports are mapped to VLANs, and written to the Running

Configuration file.

Voice VLAN

In a LAN, voice devices, such as IP phones, VoIP endpoints, and voice systems are

placed into the same VLAN. This VLAN is referred as the voice VLAN. If the

voice devices are in different voice VLANs, IP (Layer 3) routers are needed to

provide communication.

This section covers the following topics:

• Voice VLAN Overview

• Voice VLAN Configuration

• Telephony OUI

Voice VLAN Overview

This section covers the following topics:

• Dynamic Voice VLAN Modes

• Auto Voice VLAN, Auto Smartports, CDP, and LLDP

• Voice VLAN QoS

• Voice VLAN Constraints

• Voice VLAN Workflows

The following are typical voice deployment scenarios with appropriate

configurations:

• UC3xx/UC5xx hosted: All Cisco phones and VoIP endpoints support this

deployment model. For this model, the UC3xx/UC5xx, Cisco phones and

VoIP endpoints reside in the same voice VLAN. The voice VLAN of UC3xx/

UC5xx defaults to VLAN 100.

• Third-party IP PBX-hosted: Cisco SBTG CP-79xx, SPA5xx phones and

SPA8800 endpoints support this deployment model. In this model, the

VLAN used by the phones is determined by the network configuration.

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