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Cisco Catalyst 6500 Voice Deployment Guide

The Cisco Catalyst 6500 Series platform is widely deployed as the premier switch platform of choice for small enterprise networks, large multinational companies, and transcontinental service providers. One of the emerging technologies gaining particular interest across this customer set is the integration of voice across a traditional data network. Many questions arise when considering implementing voice applications over a Cisco Catalyst 6500-based network, including: How can I differentiate my voice traffic from data traffic from a quality-of-service (QoS) perspective Can I easily provision the network for voice How can I monitor and troubleshoot voice problems How can I protect my traffic so that untrusted sources cannot listen to my voice calls This document provides simple deployment recommendations based on Cisco Catalyst 6500 Series Switches running Cisco IOS Software Modularity to optimize Cisco Unified Communications in the areas of security, availability, management, and service delivery (QoS). Using a traditional campus network design model as a reference point, the document provides recommendations for each of these areas as they relate to handling converged voice applications throughout the various layers of that network. DEPLOYMENT OVERVIEW For illustration purposes, this document refers to a traditional 3-tier campus model consisting of access, distribution, and core switches, with Cisco Unified Communications devices connected to the access switches and call managers and gateway devices attached to a given distribution block (Figure 1).
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Figure 1.
Three-Tier Reference Model for VoIP Deployment
The network is divided into the following submodules:
● ● ● ● ●
Access layer 1 (10-Gigabit Ethernet uplinks) Access layer 2 (Gigabit Ethernet uplinks) Distribution layer 1 (access layer aggregation) Distribution layer 2 (server and services aggregation) Core layer

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