© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE I Chapter 6 1 Cisco Certified Network Associate CCNA Access the WAN Asst.Prof. It-arun Pitimon

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 2 Agenda  Services in a Converged WAN  Point-to-Point Protocol  Frame Relay  Enterprise Network Security  Access Control Lists  Providing Teleworker Services  Implementing IP Addressing Services

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 3 SERVICES IN A CONVERGED WAN

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 4 Describe How ECNM Provides Integrated Services over an Enterprise Network  Explain the purpose and function of WANs

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 5 Modules in the Enterprise Architecture The Cisco Enterprise Architecture consists of modules representing focused views that target each place in the network. Each module has a distinct network infrastructure with services and network applications that extend across the modules.

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 6 Example topology

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 7 Describe the Key WAN Technology Concepts  Describe WAN functions in terms of the OSI Reference Model

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 8 Describe the Key WAN Technology Concepts  Describe the key WAN data link layer protocols used in today’s Enterprise WAN networks

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 9 Select the Appropriate WAN Technology to meet ECNM Requirements  List the various options for connecting subscribers to the WAN

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 10 SERIAL POINT TO POINT LINKS POINT-TO-POINT PROTOCOL (PPP)

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 11 DTE and DCE

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 12 HLDC Frame Format

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 13 Describe the Fundamental Concepts of Point-to-Point Serial Communication  Explain when and how to configure HDLC encapsulation on a router

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 14 Describe Point-to-Point Concepts  Describe PPP in terms of its use in WAN links

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 15 PPP architecture

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 16 PPP Configuration Options

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 17 FRAME RELAY

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 18 Describe the Fundamental Concepts of Frame Relay Technology  Describe how Frame Relay is used to provide WAN services to the Enterprise

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 19 Describe the Fundamental Concepts of Frame Relay Technology  Describe how Frame Relay uses virtual circuits to carry packets from one DTE to another

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 20 Describe the Fundamental Concepts of Frame Relay Technology  Describe the types of topologies that are used for implementing Frame Relay in different environments

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 21 Describe the Fundamental Concepts of Frame Relay Technology  Describe how a router attached to a Frame Relay network uses LMI status messages and inverse ARP queries to map VCs to layer 3 network IP Addresses

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 22 Configure a Basic Frame Relay PVC  Configure a basic Frame Relay PVC on a router serial interface

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 23 Configure a Basic Frame Relay PVC  Configure a static Frame Relay map

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 24 Describe Advanced Concepts of Frame Relay Technology  Explain the reachability issues associated with the Frame Relay NBMA topology

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 25 Describe Advanced Concepts of Frame Relay Technology  Describe how to implement bandwidth control in the Frame Relay technology

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 26 Configure an Advanced Frame Relay PVC  Explain the steps to configure point-to-point subinterfaces on a physical interface

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 27 ACCESS CONTROL LISTS

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 28 Explain How ACLs are Used to Secure a Medium-Size Enterprise Branch Office Network  Explain how a packet filter allows or blocks traffic

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 29 Explain How ACLs are Used to Secure a Medium-Size Enterprise Branch Office Network  Use a flow chart to show how ACLs operate

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 30 Configure Standard ACLs in a Medium- Size Enterprise Branch Office Network  Explain how to configure a standard ACL

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 31 Configure Extended ACLs in a Medium- Size Enterprise Branch Office Network  Describe how to configure extended ACLs

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 32 Configure Standard ACLs in a Medium- Size Enterprise Branch Office Network  Describe how to use wildcard masks with ACLs

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 33 Explain How ACLs are Used to Secure a Medium-Size Enterprise Branch Office Network  Describe where ACLs should be placed in a network

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 34 Configure Extended ACLs in a Medium- Size Enterprise Branch Office Network  Describe how to apply an extended ACL to an interface

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 35 Configure Standard ACLs in a Medium- Size Enterprise Branch Office Network  Explain how to create a named ACL

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 36 IMPLEMENTING IP ADDRESSING SERVICES

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 37 Configure DHCP in an Enterprise Branch Network  Describe the function of DHCP in a network

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 38 Configure DHCP in an Enterprise Branch Network  Describe how DHCP dynamically assigns an IP address to a client

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 39 Configure DHCP in an Enterprise Branch Network  Describe how to configure a DHCP server

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 40 Configure DHCP in an Enterprise Branch Network  Explain how DHCP Relay can be used to configure a router to relay DHCP messages when the server and the client are not on the same segment

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 41 Configure NAT on a Cisco Router  Describe the operation and benefits of using private and public IP addressing

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 42 Configure NAT on a Cisco Router  Explain the key features of NAT and NAT overload

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 43 Configure NAT on a Cisco Router  Explain the advantages and disadvantages of NAT

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 44 Configure New Generation RIP (RIPng) to use IPv6  Describe the format of the IPv6 addresses and the appropriate methods for abbreviating them

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 45 Configure New Generation RIP (RIPng) to use IPv6  Explain the various methods of assigning IPv6 addresses to a device

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 46 Configure New Generation RIP (RIPng) to use IPv6  Describe the transition strategies for implementing IPv6

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 47 Configure New Generation RIP (RIPng) to use IPv6  Describe how Cisco IOS dual stack enables IPv6 to run concurrently with IPv4 in a network

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 48 Configure New Generation RIP (RIPng) to use IPv6  Describe the concept of IPv6 tunneling

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 49 Configure New Generation RIP (RIPng) to use IPv6  Describe how IPv6 affects common routing protocols, and how these protocols are modified to support IPv6

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 50 Configure New Generation RIP (RIPng) to use IPv6  Explain how to configure a router to use IPv6

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 51 Configure New Generation RIP (RIPng) to use IPv6  Explain how to configure and verify RIPng for IPv6

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 52 Configure New Generation RIP (RIPng) to use IPv6  Explain how to verify and troubleshoot IPv6

© 2006 Cisco Systems, Inc. All rights reserved.Cisco PublicITE 1 Chapter 6 53