IGMP / VoIP QoS Feasibility Report

IGMP / VoIP QoS Feasibility Introduction

This is the Internet Gateway Message Protocol (IGMP) / Voice over Internet Protocol (VoIP) Quality of Service (QoS) Feasibility Project Report. The purpose is to determine the magnitude of effort and capital required to migrate/enable the existing wide area network (WAN) infrastructure to support the existing 3Com Networked Branch Exchange (NBX) VoIP telephone system’s networking requirements.

• The current WAN / Local Area Network (LAN) description.
• Project scope.
• Requirements and functionality of the 3Com NBX VoIP phone system.
• Review of findings and estimate of material and labor.

Current WAN/LAN Description

The LAN architecture is comprised of a switched Ethernet network in which in the following internetworking devices connect.

1. Cisco Pix 520 Firewall that connects to the Internet via a BellSouth managed Cisco 2600 router.
2. 3Com NBX VoIP Console/Local 3Com VoIP Phones
3. Servers (SMTP, DNS, Accounting)
4. Cisco 2610 Router (AT&T Frame-Relay Aggregation: 13 Remote sites. Full T-1 at the corporate office and 128K CIR with 384K burst at the remote locations.)
5. Cisco 1751 Router(Dedicated T-1 circuit to another client location in which 4 remote offices aggregate into at a T-1 level.)
6. The typical remote location is populated by a router with a single Ethernet and a single serial connection. The remote LAN segment is typically populated with a single PC and a single 3Com VoIP phone.

IGMP / VoIP QoS Feasibility Project Scope

1. The client would like to enable the current WAN to support all protocols required to support the full functionality of 3Com NBX VoIP platform. Accordingly, what is the associated cost to migrate the network to support the various protocols/functionality?
2. Does the current Bay Network routers support the required protocols?
3. If possible, can a test be conducted between a remote location and the corporate office that will prove the functionality of the IGMP and IPTOS QoS related protocols?
4. How much memory is required on the routers to support IGMP?
5. What level of IOS is required?
6. What level of IGMP is required to support the 3Com functionality?
7. List/Indicate pitfalls or suggestions of the impact the protocols will have on the network.
8. Please indicate the cost of the additional software or hardware necessary to meet the requirements.