chapter 7
TRANSCRIPT
© 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 1Version 4.0
Prototyping the Campus Network
Designing and Supporting Computer Networks – Chapter 7
© 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 2
Objectives Describe the purpose for and procedures to build a
prototype of the network design
Create test plans to perform simulated or prototype test of important design elements
Perform proof-of-concept tests on LAN design elements
Identify risks and weaknesses in the design based on the proof-of-concept test conclusions
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Describe the Purpose for and Procedures to Build a Prototype of the Network Design
Prototype network: a separate network built to replicate only the portion of a network necessary to test particular functions or capabilities
Pilot network: using a portion of an existing network to test a new functionality or capability
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Describe the Purpose for and Procedures to Build a Prototype of the Network Design
Create a test plan before beginning the testing process
Create a test plan document containing descriptions of the design and topology, test procedures, and anticipated results
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Describe the Purpose for and Procedures to Build a Prototype of the Network Design
Methods to verify that a design meets the identified business criteria:
Prototyping
Basic connectivity tests
Functionality testing
Checklists
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Describe the Purpose for and Procedures to Build a Prototype of the Network Design
Tools and methods used to validate that the design is working as anticipated:
Cisco IOS commands
IP utilities and tools
Protocol analyzers
Network simulation tools
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Describe the Purpose for and Procedures to Build a Prototype of the Network Design
Test the redundancy and resiliency of a specific network design:
Overcoming device and link failures
Redundant links
Load balancing
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Describe the Purpose for and Procedures to Build a Prototype of the Network Design
Identify what represents a risk or weakness in the design
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Prototype the Hierarchical Network, Routing Protocol, and IP Addressing Model
Identify goals and requirements met by LAN design:
Testing the new design
Determining what needs to be tested
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Prototype the Hierarchical Network, Routing Protocol, and IP Addressing Model
Create the test plan:
List test outcomes that support business goals
Provide a checklist of success criteria
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Prototype the Hierarchical Network, Routing Protocol, and IP Addressing Model
Develop methodologies for comparing devices and topologies
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Prototype the Hierarchical Network, Routing Protocol, and IP Addressing Model
Develop methodologies for validating the choice of routing protocol
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Prototype the Hierarchical Network, Routing Protocol, and IP Addressing Model
Apply and test an appropriate addressing scheme
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Prototype the Hierarchical Network, Routing Protocol, and IP Addressing Model
Compare and analyze risks or weaknesses associated with choosing LAN devices, topologies, and addressing:
Lack of redundancy
Single ISP for Internet connectivity
Limited bandwidth areas
Limited fiber connectivity
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Prototype the Server Farm, Including Security and High Availability
Identify the business goals and technical requirements supporting server relocation to a data center including a server farm.
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Prototype the Server Farm, Including Security and High Availability
Create a success criteria checklist to support business goals and technical requirements for the server farm
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Prototype the Server Farm, Including Security and High Availability
Develop methodologies for comparing devices and topologies:
Creating a baseline
LAN simulation with specific protocols (PVRST+)
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Prototype the Server Farm, Including Security and High Availability
Prototype the server farm, validating security and availability:
Availability requirements
Multilayer security
Firewalls
ACL design
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Prototype the Server Farm, Including Security and High Availability
Build and analyze the prototype of the LAN to ensure business goals and technical requirements have been met
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Prototype the Server Farm, Including Security and High Availability
Compare and analyze the risks or weaknesses associated with choosing server farm devices, topologies, and addressing
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Summary The decision to create a prototype or pilot network
depends on the type of testing required and the potential disruption to the existing network.
Before beginning any testing, a test plan should be developed.
Prototypes and simulations can be used to identify risks and areas of weakness in the network design.
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