Specifications

Contents
iv
Catalyst 4224 Access Gateway Switch Software Configuration Guide
OL-2031-02
VoIP Gateway 1-6
IP Routing and WAN Features 1-7
Quality of Service 1-9
VPN and Firewall Features 1-9
Application Notes 1-10
Architecture 1-10
DSP Allocation 1-11
InterVLAN Routing 1-14
Quality of Service 1-14
Layer 2 QoS 1-14
Separate Voice and Data VLANs 1-15
Single Voice and Data VLAN with dot1p 1-15
Layer 3 QoS 1-16
WAN QoS Queuing and Scheduling 1-16
Summary of the Layer 3 WAN QoS Features 1-16
Configuration Guidelines 1-18
Default Port Configuration 1-18
Separate VLAN for Voice and Data 1-19
Port Configuration for a Single Subnet 1-19
InterVLAN and WAN Routing Configuration 1-20
Centralized Cisco CallManager and DHCP Server 1-20
Voice Port Configuration 1-21
Interface Range Command Support 1-22
Switched Port Analyzer (SPAN) 1-22
Recommended Configurations 1-22
No VTP or DTP Support 1-23
Creating a VLAN 1-23
Defining a VLAN on a Trunk Port 1-23
Trunking 1-24
Fractional PRI Configuration 1-24