© 2006 Cisco Systems, Inc. All rights reserved.BSCI v3.01-1 Describing Network Requirements Network Requirements. - презентация

1 © 2006 Cisco Systems, Inc. All rights reserved.BSCI v Describing Network Requirements Network Requirements

2 © 2006 Cisco Systems, Inc. All rights reserved.BSCI v Cisco Enterprise Architectures

3 © 2006 Cisco Systems, Inc. All rights reserved.BSCI v Cisco Hierarchical Network Model

4 © 2006 Cisco Systems, Inc. All rights reserved.BSCI v Hierarchical Campus Model

5 © 2006 Cisco Systems, Inc. All rights reserved.BSCI v Hierarchical Network Model WAN

6 © 2006 Cisco Systems, Inc. All rights reserved.BSCI v Enterprise Composite Network Model Functional Areas

7 © 2006 Cisco Systems, Inc. All rights reserved.BSCI v Enterprise Composite Network Model

8 © 2006 Cisco Systems, Inc. All rights reserved.BSCI v 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 Key requirements: –Performance (bandwidth, delay, jitter) –Security (access, transmission)

9 © 2006 Cisco Systems, Inc. All rights reserved.BSCI v 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

10 © 2006 Cisco Systems, Inc. All rights reserved.BSCI v Cisco SONA Framework Layers

11 © 2006 Cisco Systems, Inc. All rights reserved.BSCI v 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

12 © 2006 Cisco Systems, Inc. All rights reserved.BSCI v Routing Protocols

13 © 2006 Cisco Systems, Inc. All rights reserved.BSCI v Routing Protocol Comparison Parameters EIGRPOSPFIS-IS Size of Network (Small-Medium-Large-Very Large) Large Very Large Speed of Convergence (Very High-High-Medium-Low) Very HighHigh Use of VLSM (Yes-No) Yes Mixed-Vendor Devices (Yes-No) NoYes Network Support Staff Knowledge (Good-Poor) Good Fair

14 © 2006 Cisco Systems, Inc. All rights reserved.BSCI v Summary Cisco Enterprise Architectures with a hierarchical network model facilitate the deployment of converged networks. The Cisco Enterprise Composite Network Model defines three functional areas: Enterprise Campus, Enterprise Edge, and Service Provider Edge. Converged networks with their traffic mix have higher demands on the network and its resourses. 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.

15 © 2006 Cisco Systems, Inc. All rights reserved.BSCI v