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CCNA Discovery 4 - Chapter 8
CCNA Discovery 4 - Chapter 8
CCNA Discovery 4 - Chapter 8
CCNA Discovery 4 - Chapter 8
CCNA Discovery 4 - Chapter 8
CCNA Discovery 4 - Chapter 8
CCNA Discovery 4 - Chapter 8
CCNA Discovery 4 - Chapter 8
CCNA Discovery 4 - Chapter 8
CCNA Discovery 4 - Chapter 8
CCNA Discovery 4 - Chapter 8
CCNA Discovery 4 - Chapter 8
CCNA Discovery 4 - Chapter 8
CCNA Discovery 4 - Chapter 8
CCNA Discovery 4 - Chapter 8
CCNA Discovery 4 - Chapter 8
CCNA Discovery 4 - Chapter 8
CCNA Discovery 4 - Chapter 8
CCNA Discovery 4 - Chapter 8
CCNA Discovery 4 - Chapter 8
CCNA Discovery 4 - Chapter 8
CCNA Discovery 4 - Chapter 8
CCNA Discovery 4 - Chapter 8
CCNA Discovery 4 - Chapter 8
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CCNA Discovery 4 - Chapter 8

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  • 1. Prototyping the WAN Designing and Supporting Computer Networks – Chapter 8Version 4.0 © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 1
  • 2. Objectives Describe the methods to prototype remote connectivity support Prototype the WAN Connectivity Prototype the VPN connectivity for remote workers © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 2
  • 3. Describe the Methods to Prototype Remote Connectivity Support  Simulation software  Prototype testing using simulated links  Pilot testing in the actual environment © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 3
  • 4. Describe the Methods to Prototype Remote Connectivity Support Benefits of using simulation software to test remote connectivity:  Lower overall cost  Flexibility  Scalability  Control © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 4
  • 5. Describe the Methods to Prototype Remote Connectivity Support Limitations of using simulation software to test the design:  Limited functionality  Unrealistic performance © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 5
  • 6. Describe the Methods to Prototype Remote Connectivity Support Simulate WAN connectivity in a prototype lab:  Use Ethernet connection to simulate DSL or cable  Use CSU/DSU, serial modems, or V.35 cables to simulate serial connectivity © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 6
  • 7. Prototype the WAN Connectivity  Identify business goals and technical requirements from the case study and determine which of these goals and requirements can be tested in the prototype © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 7
  • 8. Prototype the WAN Connectivity  Create a success criteria checklist to support business goals and technical requirements © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 8
  • 9. Prototype the WAN Connectivity Determine the elements of the simulated WAN connection:  Simulate the Frame Relay connection using a Cisco router acting as a Frame Relay switch  Simulate a crossover function using V.35 cables  Provide the DCE function with a clock rate © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 9
  • 10. Prototype the WAN ConnectivityValidate the choice of WAN devices and topologies: Local point-to-point circuit Packet-switched network Remote point-to-point circuit © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 10
  • 11. Prototype the WAN Connectivity  Configure the router to act as the Frame Relay switch  Configure serial interfaces as DCE devices  Configure Layer 3 addresses and encapsulation type © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 11
  • 12. Prototype the WAN Connectivity Verify that the Frame Relay WAN operates as expected:  Display the status of the interfaces  Verify the exchange of LMI messages  Display the status of PVCs and the Frame Relay maps © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 12
  • 13. Prototype the WAN Connectivity Provide and test backup capabilities:  Set up Ethernet connections  Create floating static routes © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 13
  • 14. Prototype the WAN Connectivity Troubleshoot Layer 1 using the show interface serial command Troubleshoot Layer 2 using the show frame-relay lmi command Check Layer 3 functionality © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 14
  • 15. Prototype the WAN Connectivity  Identify areas of risk and weakness in the design © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 15
  • 16. Prototype the VPN Connectivity for Remote Workers Determine which business goals and technical requirements can be tested in the prototype:  VPN security  VPN server location © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 16
  • 17. Prototype the VPN Connectivity for Remote Workers  Create a success criteria checklist to support business goals and technical requirements © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 17
  • 18. Prototype the VPN Connectivity for Remote Workers  Verify the use of Cisco EasyVPN to configure a VPN server and set up the client software © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 18
  • 19. Prototype the VPN Connectivity for Remote Workers  Validate the choice of VPN technology, devices, and topologies © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 19
  • 20. Prototype the VPN Connectivity for Remote Workers Prototype the Remote Worker Support:  IPSec  Split tunnels © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 20
  • 21. Prototype the VPN Connectivity for Remote Workers  Validate the placement of the VPN server and access list filtering in the prototype network © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 21
  • 22. Prototype the VPN Connectivity for Remote Workers  Identify risks or weaknesses in the VPN design © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 22
  • 23. Summary Every Frame Relay link has three components: a local point-to-point circuit, the packet-switched network, and a remote point-to-point circuit. Frame Relay is a nonbroadcast multi-access protocol. One way to configure routers to use a backup link when a primary link fails is to create floating static routes. VPNs have two important components: tunneling and encryption. Encryption algorithms such as DES require a symmetric, shared secret key. IPSec provides data confidentiality, integrity, and authentication at Layer 3. © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 23
  • 24. © 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 24

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