Cisco Catalyst 3560-X Software Configuration Manual page 73

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Table of Contents

In addition to inter-VLAN routing, the multilayer switches provide QoS mechanisms such as DSCP

priorities to prioritize the different types of network traffic and to deliver high-priority traffic. If

congestion occurs, QoS drops low-priority traffic to allow delivery of high-priority traffic.

For prestandard and IEEE 802.3af-compliant powered devices connected to Catalyst PoE switches,

IEEE 802.1p/Q QoS gives voice traffic forwarding-priority over data traffic.

Catalyst PoE switch ports automatically detect any Cisco prestandard and IEEE 802.3af-compliant

powered devices that are connected. Each PoE switch port provides 15.4 W of power per port. The

powered device, such as a Cisco IP Phone, can receive redundant power when it is also connected to an

AC power source. Powered devices not connected to Catalyst PoE switches must be connected to AC

power sources to receive power.

Cisco CallManager controls call processing, routing, and Cisco IP Phone features and configuration.

Users with workstations running Cisco SoftPhone software can place, receive, and control calls from

their PCs. Using Cisco IP Phones, Cisco CallManager software, and Cisco SoftPhone software integrates

telephony and IP networks, and the IP network supports both voice and data.

With the multilayer switches providing inter-VLAN routing and other network services, the routers

focus on firewall services, Network Address Translation (NAT) services, voice-over-IP (VoIP) gateway

services, and WAN and Internet access.

StackWise Plus

switch stack

Catalyst 3750-X-Only Switch Stack in a Collapsed Backbone Configuration

Cisco 2600 or

3700 routers

Workstations

Cisco SoftPhone

Catalyst 3750-X and 3560-X Switch Software Configuration Guide

Network Configuration Examples

Aironet wireless

access points

Troubleshooting

Catalyst 3750-x