CCNA 5.0 Planning Guide Chapter 3: Point-to-Point Connections

Chapter 3: Objectives In this chapter, you will be able to: Explain the fundamentals of point-to-point serial communication across a WAN. Configure HDLC encapsulation on a point-to-point serial link. Describe the benefits of using PPP over HDLC in a WAN. Describe the PPP layered architecture and the functions of LCP and NCP. Explain how a PPP session is established. Configure PPP encapsulation on a point-to-point serial link. Configure PPP authentication protocols. Use show and debug commands to troubleshoot PPP. 2

Chapter 3: Overview This chapter covers the terms, technology, and protocols used in serial connections. The HDLC and Point-to-Point Protocols (PPP) are introduced. PPP is a protocol that is able to handle authentication, compression, error detection, monitor link quality, and logically bundles multiple serial connections together to share the load. 3

Chapter 3: Activities What activities are associated with this chapter? 3.0.1.2 Class Activity – PPP Persuasion 3.1.1.11 Activity - Identify the Serial Communications Terminology 3.1.2.6 Syntax Checker – Troubleshooting a Serial Interface 3.1.2.7 Packet Tracer – Troubleshooting Serial Interfaces 3.2.2.5 Activity – Identify PPP Features and Operations 3.2.3.6 Activity – Identify the Steps in the LCP Link Negotiation Process 3.3.1.4 Syntax Checker – PPP Link Quality Monitoring Command 3.3.2.6 Syntax Checker – PAP and CHAP Authentication Configuration 3.3.2.7 Packet Tracer – Configuring PAP and CHAP Authentication 3.3.2.8 Lab – Configuring Basic PPP with Authentication 4

Chapter 3: Activities (cont.) What activities are associated with this chapter? 3.4.1.4 Packet Tracer – Troubleshooting PPP with Authentication 3.4.1.5 Lab – Troubleshooting Basic PPP with Authentication 3.5.1.1 Class Activity – PPP Validation 3.5.1.2 Packet Tracer – Skills Integration Challenge 5

Chapter 3: Packet Tracer Activity Password The password for all the Packet Tracer activities in this chapter is: PT_ccna5 6

Chapter 3: Assessment Students should complete the Chapter 3 Exam after completing Chapter 3. Worksheets, labs and quizzes can be used to informally assess student progress. 7

Chapter 3: New Terms What terms and commands are introduced in this chapter? 3.1.1.1 Point-to-point Connection Serial Communication Parallel Communication 3.1.1.2 RS-232 V.35 HSSI 3.1.1.4 Multiplexing Time-division Multiplexing Multiplexer 3.1.1.5 Statistical Time-division Multiplexing 3.1.1.6 Synchronous Optical Network (SONET) Synchronous Digital Hierarchy (SDH) 3.1.1.7 Local Loop Customer Premises Equipment (CPE) Demarcation Point CSU/DSU Network Terminating Unit (NTU) 8

Chapter 3: New Terms (cont.) What terms and commands are introduced in this chapter? 3.1.1.8 DTE DCE Electronics Industry Association (EIA) International Telecommunication Union Telecommunications Standardization Sector (ITU-T) 3.1.1.9 null modem DB9 DB60 EIA/TIA-232 EIA/TIA-449 X.21 EIA/TIA-530 Smart serial cable 3.1.1.10 DS0, DS1, etc. T1/T3 E1/E3 OC-X 9

Chapter 3: New Terms (cont.) What terms and commands are introduced in this chapter? 3.1.2.1 HDLC PPP Serial Line Internet Protocol (SLIP) X.25/Link Access Procedure Balanced (LAPB) Frame Relay PAP CHAP ATM Circuit-switched Packet-switched 3.1.2.3 Information Frames (I-frames) Supervisory Frames (S-frames) Unnumbered Frames (U-frames) 3.1.2.5 show controllers serial command 3.2.1.1 Link Control Protocol (LCP) Network Control Protocols (NCPs) IPv4, IPv6, Novell IPX, AppleTalk Control Protocol 10

Chapter 3: New Terms (cont.) What terms and commands are introduced in this chapter? 3.2.1.2 Password Authentication Protocol (PAP) Challenge Handshake Authentication Protocol (CHAP) 3.2.2.4 Frame Check Sequence (FCS) 3.2.3.1 Link Establishment And Configuration Negotiation Link Quality Determination Network Layer Protocol Configuration Negotiation 3.2.3.2 Configure-Request Configure-Ack Configure-Nak Configure-Reject Code-Reject Protocol-Reject Echo-Request Echo-Reply Discard-Request Terminate-Request Terminate-Ack 3.2.3.3 Code Identifier 11

Chapter 3: New Terms (cont.) What terms and commands are introduced in this chapter? 3.2.3.4 Compression Multilink 3.3.1.1 Stacker Predictor Error Detection Magic Number PPP Callback 3.3.1.2 encapsulation ppp command 3.3.1.3 compress predictor command 3.3.1.4 ppp quality percentage command 3.3.1.5 interface multilink 1 command ppp multilink command ppp multilink group 1 command 3.3.1.6 show ppp multilink command 3.3.2.2 ppp authentication pap command 3.3.2.3 Message Digest 5 (MD5) 3.3.2.5 ppp authentication chap command 3.3.2.6 username name password password command 12

Chapter 3: New Terms (cont.) What terms and commands are introduced in this chapter? 3.4.1.1 debug ppp command 3.4.1.2 debug ppp packet command debug ppp negotiation command debug ppp error command 3.4.1.3 debug ppp authentication command 13

Chapter 3: Best Practices Prior to teaching Chapter 3, the instructor should: Complete Chapter 3 Assessment. Ensure all activities are completed. This is a very important concept and hands-on time is vital. Provide the students many PPP troubleshooting activities. Encourage students to login with their cisco.com login and download http://docwiki.cisco.com/wiki/Internetworking_Technology_Handbook 14

Chapter 3: Additional Help For additional help with teaching strategies, including lesson plans, analogies for difficult concepts, and discussion topics, visit the CCNA Community at http://community.netacad.net/web/ccna/files. If you have lesson plans or resources that you would like to share, upload them to the CCNA Community to help other instructors. 15

Chapter 3: Topics Not in ICND2 200-101 This section lists topics covered by this chapter that are NOT listed in the ICND2 200-101 Blueprint. Those topics are posted at http://www.cisco.com/web/learning/exams/list/icnd1b.html. Instructors could skip these sections; however, they should provide additional information and fundamental concepts to assist the student with the topic. ALL TOPICS IN CHAPTER 3 ARE OBJECTIVES OF THE ICND2. 16