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Lesson 1.2: Describing Converged Network Requirements

Module 1: Converged Network Connectivity Requirements

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Objectives

Explain the Cisco conceptual network models, such as Cisco Enterprise Architecture and Cisco hierarchical network model.

Describe the traffic conditions in a converged network.

Describe the IIN and the SONA framework.

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Traditional Hierarchical Model

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Cisco Enterprise Architecture

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Campus Architecture

IP Communications

mobility

advanced security

Campus Architecture combines a core infrastructure of intelligent switching and routing including:

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Data Center Architecture

requirements for consolidation

business continuance

security

The Data Center is a cohesive, adaptive network architecture supporting:

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Branch Architecture

security

IP communications

advanced application performance supporting thousands of remote locations/users

The Branch allows enterprises to extend head-office applications and services including:

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Teleworker Architecture

Teleworker architecture allows enterprises to securely deliver voice and data services to remote, small or home offices.

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WAN Architecture

WAN architecture offers the convergence of voice, video and data services over a single IP communications network.

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Example: Enterprise Network

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Network Traffic Mix and Requirements

Converged network traffic mix:Voice and video traffic

Voice applications traffic

Mission-critical applications traffic

Transactional traffic

Routing update traffic

Network management traffic

Bulk transfer (best-effort) and scavenger (less-than-best-effort) traffic

Key requirements:Performance (bandwidth, delay, and jitter)

Security (access and transmission)

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Example: Integrated Services in a Converged Network

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Intelligent Information Network (IIN)

IIN integrates networked resources and information assets.

IIN extends intelligence across multiple products and infrastructure layers.

IIN actively participates in the delivery of services and applications.

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Phases of IIN

Three phases in building an IIN are:Integrate transport

Integrate services

Integrate applications

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Cisco SONA Framework

Cisco SONA is an architectural framework.

Cisco SONA brings several advantages to enterprises:Outlines how enterprises can evolve toward the IIN

Illustrates how to build integrated systems across a fully converged intelligent network

Improves flexibility and increases efficiency

Cisco provides an extensive product line, services, proven architectures, and experience to help the enterprises achieve their business goals.

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Cisco SONA Layers

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SONA—Networked Infrastructure Layer

The goal is “anywhere/anytime connectivity.”

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SONA—Interactive Services Layer

voice and collaboration services mobility services security and identity services storage services computer services

application networking services network infrastructure

virtualization services management adaptive management services

Interactive services includes:

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SONA—Application Layer

business applications collaboration applications

Application Layer includes:

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Self Check

1. What are the 3 building blocks of the hierarchical model?

2. Describe the special needs of voice and video traffic.

3. What types of traffic could be considered best-effort and less-than-best-effort?

4. What is AON?

5. What are the 3 layers of SONA?

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The traditional three-layer hierarchical model no longer completely meets the needs of large converged networks carrying voice, video, and data. IIN aligns IT resources with business priorities.

Cisco Enterprise Architecture and SONA provide a framework for deploying converged networks.

Dealing with complex traffic mixes is a key feature of Cisco Enterprise Architecture. The Service layer of SONA addresses the performance and security requirements of converged networks.

IIN aligns IT resources with business priorities.

Cisco SONA provides an evolutionary path to IIN.

Summary

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Q and A

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Resources

Business Overview of Cisco SONAhttp://cisco.com/en/US/netsol/ns340/ns394/ns431/networking_solutions_white_paper0900aecd803efff3.shtml

What is IIN?http://cisco.com/en/US/netsol/ns650/networking_solutions_market_segment_solution.html

Enterprise Architectures Posterhttp://cisco.com/application/pdf/en/us/guest/netsol/ns477/c643/cdccont_0900aecd802843ce.pdf

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