IETF Differentiated Services Concerns with Intserv: r Scalability: signaling, maintaining per-flow router state difficult with large number of flows r.
Network Layer4-1 Datagram networks r no call setup at network layer r routers: no state about end-to-end connections m no network-level concept of “connection”
Network Layer4-1 Chapter 4 Network Layer Computer Networking: A Top Down Approach Featuring the Internet, 3 rd edition. Jim Kurose, Keith Ross Addison-Wesley,
Introduction 1 Lecture 19 Network Layer (Routing Algorithms) slides are modified from J. Kurose & K. Ross University of Nevada – Reno Computer Science.
Introduction 1-1 1DT014/1TT821 Computer Networks I Chapter 4 Network Layer.
Chapter 4 Network Layer slides are modified from J. Kurose & K. Ross CPE 400 / 600 Computer Communication Networks Lecture 19.
Network Layer4-1 Chapter 4 Network Layer All material copyright 1996-2009 J.F Kurose and K.W. Ross, All Rights Reserved Computer Networking: A Top Down.
Chapter 4 Network Layer. Chapter 4: Network Layer Chapter goals: r understand principles behind network layer services: m network layer service models.
Network Layer4-1 School of Computing Science Simon Fraser University CMPT 371: Data Communications and Networking Chapter 4: Network Layer.
Network Layer4-1 Network Layer Goals: r understand principles behind network layer services: m routing (path selection) m dealing with scale m how a router.
Comp 361, Spring 20054: Network Layer1 Chapter 4: Network Layer Part I (last revised 22/03/05) r 4. 1 Introduction r 4.2 Virtual circuit and datagram networks.
Comp 361, Spring 20054: Network Layer1 Chapter 4: Network Layer: Part II (last revision 19/04/05. v3) r 4. 1 Introduction r 4.2 Virtual circuit and datagram.