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Lecture 6: Data Link Layer Protocols - HDLC, PPP, and Error Correction, Study notes of Computer Systems Networking and Telecommunications

The University of Tennessee (UT)Computer Systems Networking and Telecommunications

This lecture note covers the data link layer protocols, including hdlc, ppp, and error correction techniques. Various example data link protocols such as hdlc, sdlc, adccp, lap, and ppp. It also explains the role of the data link layer in the internet and its protocols like ppp, lcp, and ncp. An overview of framing techniques, error correction methods like hamming code and crc, and reliable data transfer protocols such as go-back-n and selective repeat.

Typology: Study notes

Pre 2010

Uploaded on 09/17/2009

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1
ECE453 – Introduction to
Computer Networks
Lecture 6 – Data Link Layer Protocol (III)
2
Example Data Link Protocols
HDLC – High-Level Data Link Control
SDLC (IBM)
ADCCP (ANSI)
HDLC (ISO)
LAP ÆLAPB as part of the X.25 (CCITT)
The Data Link Layer in the Internet
PPP
Ethernet (LAN)
3
High-Level Data Link Control
Bit-oriented protocol
Frame format
Sliding window
3-bit seq number
pf3

Partial preview of the text

Download Lecture 6: Data Link Layer Protocols - HDLC, PPP, and Error Correction and more Study notes Computer Systems Networking and Telecommunications in PDF only on Docsity!

1

ECE453 – Introduction to

Computer Networks

Lecture 6 – Data Link Layer Protocol (III)

2

Example Data Link Protocols

HDLC – High-Level Data Link Control

„ SDLC (IBM)

„ ADCCP (ANSI)

„ HDLC (ISO)

„ LAP Æ LAPB as part of the X.25 (CCITT)

The Data Link Layer in the Internet

„ PPP

„ Ethernet (LAN)

3

High-Level Data Link Control

Bit-oriented protocol

Frame format

Sliding window

3-bit seq number

4

The Data Link Layer in the

Internet

5

PPP – Point to Point Protocol

Character-oriented

Frame format

„ unnumbered frame

Error detection

Multiprotocol framing

„ LCP (link control protocol)

„ NCP (network control protocol)

What’s the indication?

6

PPP

LCP option negotiation

Physical Layer connection

NCP configures network layer