Chapter 15 Configuring Voice Vlan; Understanding Voice Vlan - Cisco IE 3000 Software Configuration Manual

Hide thumbs Also See for IE 3000:

Table of Contents

Configuring Voice VLAN

This chapter describes how to configure the voice VLAN feature on the IE 3000 switch. Voice VLAN is

referred to as an auxiliary VLAN in some Catalyst 6500 family switch documentation.

For complete syntax and usage information for the commands used in this chapter, see the command

reference for this release.

This chapter consists of these sections:

The voice VLAN feature enables access ports to carry IP voice traffic from an IP phone. When the switch

is connected to a Cisco 7960 IP Phone, the phone sends voice traffic with Layer 3 IP precedence and

Layer 2 class of service (CoS) values, which are both set to 5 by default. Because the sound quality of

an IP phone call can deteriorate if the data is unevenly sent, the switch supports quality of service (QoS)

based on IEEE 802.1p CoS. QoS uses classification and scheduling to send network traffic from the

switch in a predictable manner. For more information on QoS, see

The Cisco 7960 IP Phone is a configurable device, and you can configure it to forward traffic with an

IEEE 802.1p priority. You can configure the switch to trust or override the traffic priority assigned by a

Cisco IP Phone.

The Cisco IP Phone contains an integrated three-port 10/100 switch as shown in

provide dedicated connections to these devices:

Understanding Voice VLAN, page 15-1

Configuring Voice VLAN, page 15-3

Displaying Voice VLAN, page 15-6

Port 1 connects to the switch or other voice-over-IP (VoIP) device.

Port 2 is an internal 10/100 interface that carries the IP Phone traffic.

Port 3 (access port) connects to a PC or other device.

C H A P T E R

Chapter 32, "Configuring QoS."

Cisco IE 3000 Switch Software Configuration Guide

15-1. The ports

Chapters

Table of Contents