© 2009 cisco systems, inc. all rights reserved. route v1.0—1-1 planning routing services...
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© 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—1-5
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—1-8
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—1-11
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—1-13
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
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Routing Protocol Comparison
Parameters EIGRP OSPF BGP
Size of Network(Small-Medium-Large-Very Large)
Large Large Very Large
Speed of Convergence(Very High-High-Medium-Low)
Very High High Low
Use of VLSM(Yes-No)
Yes Yes Yes
Mixed-Vendor Devices(Yes-No)
No Yes Yes
Network Support Staff Knowledge(Good-Fair-Poor)
Good 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.