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CCNA Discovery 4 - Chapter 8
1.
Prototyping the WAN
Designing and Supporting Computer Networks – Chapter 8 Version 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
Connectivity Validate 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