Configuring Voice VLANs

Configuring Cisco IP Phone Voice Traffic

SUMMARY STEPS

1.configure terminal

2.interface interface-id

3.mls qos trust cos

4.switchport voice vlan {vlan-iddot1p none untagged }

5.end

6.Use one of the following:

•show interfaces interface-idswitchport

•show running-config interface interface-id

7.copy running-config startup-config

DETAILED STEPS

 

Command or Action

Purpose

Step 1

configure terminal

Enters the global configuration mode.

 

Example:

 

 

Switch# configure terminal

 

Step 2

interface interface-id

Specifies the interface connected to the phone, and enters interface

 

 

configuration mode.

 

Example:

 

 

Switch(config)# interface

 

 

gigabitethernet1/0/1

 

Step 3 mls qos trust cos

Example:

Switch(config-if)# mls qos trust cos

Configures the interface to classify incoming traffic packets by using the packet CoS value. For untagged packets, the port default CoS value is used.

Note Before configuring the port trust state, you must first globally enable QoS by using the mls qos global configuration command.

Step 4 switchport voice vlan {vlan-iddot1p none

untagged }

Example:

Switch(config-if)# switchport voice vlan 125

Configures how the Cisco IP Phone carries voice traffic:

•vlan-id—Configures the phone to forward all voice traffic through the specified VLAN. By default, the Cisco IP Phone forwards the voice traffic with an IEEE 802.1Q priority of 5. Valid VLAN IDs are 1 to 4094.

•dot1p—Configures the switch to accept voice and data IEEE 802.1p priority frames tagged with VLAN ID 0 (the native VLAN). By default, the switch drops all voice and data traffic tagged with VLAN 0. If configured for 802.1p the Cisco IP Phone forwards the traffic with an IEEE 802.1p priority of 5.

 

Catalyst 2960-XR Switch VLAN Configuration Guide, Cisco IOS Release 15.0(2)EX1

154

OL-29440-01

Page 167 Page 169
Page 168
Image 168
Cisco Systems WSC2960XR48FPSI manual Configure terminal, Mls qos trust cos
Page 167 Page 169

WSC2960XR48FPSI specifications

The Cisco WSC2960XR48FPSI is an advanced, high-performance switch that plays a vital role in today's enterprise networking environments. Designed for reliability and efficiency, it serves as a foundational component for organizations concentrating on network agility and scalability.

One of the standout features of the WSC2960XR48FPSI is its ability to support 48 Gigabit Ethernet ports, facilitating high-speed connectivity across multiple devices. This capacity makes it an ideal choice for enterprises that require robust network infrastructure to handle large volumes of traffic effortlessly. Additionally, it includes two 10-Gigabyte SFP+ uplink ports, providing enhanced bandwidth for backbone connections, enabling seamless integration with data center environments.

The switch supports Cisco's StackPower technology, which allows multiple switches to share power resources. This capability not only provides redundancy but also ensures that organizational networks can be efficiently managed, reducing operational costs by utilizing power resources wisely.

In terms of reliability, the WSC2960XR48FPSI offers a fanless design, making it an optimal choice for deployments in noise-sensitive environments such as classrooms or offices. Its features include support for Cisco's FlexStack-Plus technology, which allows for easy stacking of up to eight units. This results in simplified management and increased bandwidth as switches in the stack operate as a single entity.

The switch is powered by Cisco IOS Software, providing robust features, including advanced security protocols, quality of service (QoS) capabilities, and comprehensive network management tools. With support for multicast routing and enhanced security, organizations can safeguard their data while ensuring smooth and reliable communication across applications.

Moreover, the Cisco WSC2960XR48FPSI is designed to be energy-efficient, compliant with IEEE 802.3az Energy Efficient Ethernet standards, which aids in reducing power consumption without sacrificing performance. This commitment to sustainability makes it a favorable option for organizations striving for greener operations.

To summarize, the Cisco WSC2960XR48FPSI is an exemplary model of reliability, scalability, and performance. Its sophisticated features, including high port density, advanced security measures, and energy efficiency, make it a cornerstone for modern enterprise networks, enabling organizations to adapt effectively in an ever-evolving digital landscape.
Top Page Image Contents