© 2009 Cisco Systems, Inc. All rights reserved. ROUTE v1.0—1-1 Planning Routing Services Assessing Complex Enterprise Network Requirements

© 2009 Cisco Systems, Inc. All rights reserved. ROUTE v1.0—1-2 Cisco Enterprise Architectures

© 2009 Cisco Systems, Inc. All rights reserved. ROUTE v1.0—1-3 Cisco Hierarchical Network Model

© 2009 Cisco Systems, Inc. All rights reserved. ROUTE v1.0—1-4 Example: Hierarchical Campus Model

© 2009 Cisco Systems, Inc. All rights reserved. ROUTE v1.0—1-5 Example: Hierarchical Network Model WAN

© 2009 Cisco Systems, Inc. All rights reserved. ROUTE v1.0—1-6 Enterprise Composite Network Model Functional Areas

© 2009 Cisco Systems, Inc. All rights reserved. ROUTE v1.0—1-7 Enterprise Composite Network Model

© 2009 Cisco Systems, Inc. All rights reserved. ROUTE v1.0—1-8 Converged network traffic mix:  Voice and video traffic  Voice applications traffic  Mission-critical applications traffic  Transactional traffic  Routing update traffic  Network management traffic Network Traffic Mix

© 2009 Cisco Systems, Inc. All rights reserved. ROUTE v1.0—1-9 Key requirements:  Performance –Bandwidth –Delay –Jitter  Security –Access –Transmission Network Requirements

© 2009 Cisco Systems, Inc. All rights reserved. ROUTE v1.0—1-10 Example: Enterprise network

© 2009 Cisco Systems, Inc. All rights reserved. ROUTE v1.0—1-11 Cisco SONA Framework  Cisco Service-Oriented Network Architecture (SONA) is an architectural framework.  Cisco SONA brings several advantages to enterprises: –Outlines how enterprises can evolve toward the Intelligent Information Network (IIN) –Illustrates how to build integrated systems across a fully converged intelligent network –Improves flexibility and increases efficiency –Optimizes applications, processes, and resources

© 2009 Cisco Systems, Inc. All rights reserved. ROUTE v1.0—1-12 Cisco SONA Framework Layers

© 2009 Cisco Systems, Inc. All rights reserved. ROUTE v1.0—1-13 Intelligent Information Network  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.  Three phases in building an IIN are: –Integrated transport –Integrated services –Integrated applications

© 2009 Cisco Systems, Inc. All rights reserved. ROUTE v1.0—1-14 Example: Enterprise Network  Networked infrastructure layer  Interactive services layer  Application layer

© 2009 Cisco Systems, Inc. All rights reserved. ROUTE v1.0—1-15 Routing Protocols

© 2009 Cisco Systems, Inc. All rights reserved. ROUTE v1.0—1-16 Routing Protocol Comparison ParametersEIGRPOSPFBGP Size of Network (Small-Medium-Large-Very Large) Large Very Large Speed of Convergence (Very High-High-Medium-Low) Very HighHighLow Use of VLSM (Yes-No) Yes Mixed-Vendor Devices (Yes-No) NoYes Network Support Staff Knowledge (Good-Fair-Poor) Good Fair

© 2009 Cisco Systems, Inc. All rights reserved. ROUTE v1.0—1-17 Example: Enterprise Network  EIGRP is used as IGP  BGP is used as EGP  Static routes for remote access and VPN

© 2009 Cisco Systems, Inc. All rights reserved. ROUTE v1.0—1-18 Summary  Cisco Enterprise Architectures with hierarchical network models facilitate the deployment of converged networks.  Converged networks with their traffic mix have higher demands on the network and its resources.  The SONA framework guides the evolution of the enterprise network toward the IIN.  The network models can be important tools for selecting and implementing an advanced IP routing protocol.

© 2009 Cisco Systems, Inc. All rights reserved. ROUTE v1.0—1-19