Characterizing the              Existing Network              Designing and Supporting Computer Networks – Chapter 3Versio...
Objectives   Diagram and document an existing network to identify    strengths and weaknesses in the design.   Use CCO t...
Diagram a Physical Network and Document the   Existing NetworkNetwork documentation: Logical and physical diagrams Floor...
Diagram a Physical Network and Document theExisting Network Log in to network devices Use Cisco IOS software commands to...
Diagram a Physical Network and   Document the Existing Network Create a logical network diagram showing existing  address...
Diagram a Physical Network and   Document the Existing Network Create a modular block diagram Simplify the network to sh...
Diagram a Physical Network and   Document the Existing Network Identify and document the strengths and weaknesses  of the...
Use CCO to Determine the Appropriate IOS    Version to Support Network RequirementsCisco CCO features and navigation: Doc...
Use CCO to Determine the Appropriate IOS   Version to Support Network Requirements Use the show version command Verify t...
Use CCO to Determine the Appropriate IOS   Version to Support Network Requirements Select the correct IOS image using the...
Use CCO to Determine the Appropriate IOS   Version to Support Network Requirements Download the correct IOS Store new IO...
Use CCO to Determine the Appropriate IOS   Version to Support Network RequirementsThree stages of the router bootup proces...
Use CCO to Determine the Appropriate   Hardware Features and Install the Upgrades Use datasheets to see what modules and ...
Use CCO to Determine the Appropriate   Hardware Features and Install the UpgradesInstalling a new hardware option on a Cis...
Perform a Wireless Site Survey Preparation Site survey Security Safety guidelines   © 2006 Cisco Systems, Inc. All rig...
Perform a Wireless Site Survey Identify possible sources of signal interference Identify physical infrastructure issues ...
Perform a Wireless Site Survey Define customer requirements Identify coverage areas Determine preliminary access point ...
Organize Collected Data into a New   Network DesignDesign requirements document: Overall project goal Project scope Net...
Organize Collected Data into a New   Network Design Identify and record the overall goal of the proposed  network design ...
Organize Collected Data into a New   Network Design Identify and record the scope of the proposed network  upgrade   © 20...
Organize Collected Data into a New   Network Design Identify and record the business goals and technical  requirements of...
Organize Collected Data into a New   Network Design Characterize the existing network in relation to the  identified busi...
Summary Ensure that network documentation is accurate and  complete before designing an upgrade Gather information using...
© 2006 Cisco Systems, Inc. All rights reserved.   Cisco Public   24
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CCNA Discovery 4 - Chapter 3

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CCNA Discovery 4 - Chapter 3

  1. 1. Characterizing the Existing Network Designing and Supporting Computer Networks – Chapter 3Version 4.0 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 1
  2. 2. Objectives Diagram and document an existing network to identify strengths and weaknesses in the design. Use CCO to determine the appropriate IOS version to support network requirements and download and install the appropriate IOS Use CCO to determine the appropriate hardware features and install the upgrades using safe practices and procedures Perform a wireless site survey Organize collected data into a new network design © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 2
  3. 3. Diagram a Physical Network and Document the Existing NetworkNetwork documentation: Logical and physical diagrams Floor plans Inventory lists for equipment and applications Current network configuration files © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 3
  4. 4. Diagram a Physical Network and Document theExisting Network Log in to network devices Use Cisco IOS software commands to gain information on routers and switches © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 4
  5. 5. Diagram a Physical Network and Document the Existing Network Create a logical network diagram showing existing addressing, routing, and network segmentation Illustrate how information flows through the network © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 5
  6. 6. Diagram a Physical Network and Document the Existing Network Create a modular block diagram Simplify the network to show major functions © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 6
  7. 7. Diagram a Physical Network and Document the Existing Network Identify and document the strengths and weaknesses of the existing network Focus on finding ways to overcome weaknesses © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 7
  8. 8. Use CCO to Determine the Appropriate IOS Version to Support Network RequirementsCisco CCO features and navigation: Documentation Tools Downloads Communities and training News © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 8
  9. 9. Use CCO to Determine the Appropriate IOS Version to Support Network Requirements Use the show version command Verify that the inventory list is correct Obtain missing information © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 9
  10. 10. Use CCO to Determine the Appropriate IOS Version to Support Network Requirements Select the correct IOS image using the CCO IOS Feature Navigator © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 10
  11. 11. Use CCO to Determine the Appropriate IOS Version to Support Network Requirements Download the correct IOS Store new IOS image on TFTP server Transfer the file to the Cisco router or switch © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 11
  12. 12. Use CCO to Determine the Appropriate IOS Version to Support Network RequirementsThree stages of the router bootup process: Perform the POST and load the bootstrap program Locate and load the IOS software Locate and execute the startup configuration, or enter setup mode © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 12
  13. 13. Use CCO to Determine the Appropriate Hardware Features and Install the Upgrades Use datasheets to see what modules and interfaces are available Determine the technologies and media a given device will support © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 13
  14. 14. Use CCO to Determine the Appropriate Hardware Features and Install the UpgradesInstalling a new hardware option on a Cisco router or switch: Turn off power Remove blank faceplace Install option module Turn on power and check the new configuration © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 14
  15. 15. Perform a Wireless Site Survey Preparation Site survey Security Safety guidelines © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 15
  16. 16. Perform a Wireless Site Survey Identify possible sources of signal interference Identify physical infrastructure issues © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 16
  17. 17. Perform a Wireless Site Survey Define customer requirements Identify coverage areas Determine preliminary access point locations Measure signal strength © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 17
  18. 18. Organize Collected Data into a New Network DesignDesign requirements document: Overall project goal Project scope Network requirements Current state of the network © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 18
  19. 19. Organize Collected Data into a New Network Design Identify and record the overall goal of the proposed network design © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 19
  20. 20. Organize Collected Data into a New Network Design Identify and record the scope of the proposed network upgrade © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 20
  21. 21. Organize Collected Data into a New Network Design Identify and record the business goals and technical requirements of the proposed network design © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 21
  22. 22. Organize Collected Data into a New Network Design Characterize the existing network in relation to the identified business goals and technical requirements © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 22
  23. 23. Summary Ensure that network documentation is accurate and complete before designing an upgrade Gather information using tools like Cisco Network Assistant Organize the current network into a modular block diagram to identify where the network needs to be improved. The Cisco CCO site provides valuable tools and documentation for the design process. Before producing a wireless network design, it is usually necessary to do a wireless site survey. © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 23
  24. 24. © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 24

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