Module 1:
Converged Network
Connectivity
Requirements
Lesson 1.2: Describing Converged Network 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
Campus Architecture combines a core infrastructure
of intelligent switching and routing including:
 IP Communications
 mobility
 advanced security
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Data Center Architecture
The Data Center is a cohesive, adaptive network
architecture supporting:
 requirements for consolidation
 business continuance
 security
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Branch Architecture
The Branch allows enterprises to extend head-office
applications and services including:
 security
 IP communications
 advanced application performance supporting
thousands of remote locations/users
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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
Interactive services includes:
 voice and collaboration
services
 mobility services
 security and identity services
 storage services
 computer services
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 application networking services
 network infrastructure
virtualization
 services management
 adaptive management services
SONA—Application Layer
Application Layer includes:
 business applications
 collaboration applications
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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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Summary
 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.
© 2006 Cisco Systems, Inc. All rights reserved.
Q and A
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Resources
 Business Overview of Cisco SONA
http://cisco.com/en/US/netsol/ns340/ns394/ns431/networking_s
olutions_white_paper0900aecd803efff3.shtml
 What is IIN?
http://cisco.com/en/US/netsol/ns650/networking_solutions_mark
et_segment_solution.html
 Enterprise Architectures Poster
http://cisco.com/application/pdf/en/us/guest/netsol/ns477/c643/c
dccont_0900aecd802843ce.pdf
© 2006 Cisco Systems, Inc. All rights reserved.
© 2006 Cisco Systems, Inc. All rights reserved.