Chapter 4 network layer pdf

Notice that the bottom layer is identified as the first layer. Internet protocol datagram format ipv4 addressing icmp ipv6 internet rip ospf bgp 4. In particular, the network layer moves transport layer segments from one host to another. An introduction to network layer services and principles. Cisco confidential 4 role of the transport layer 7. Internet protocol datagram format ipv4 addressing icmp ipv6 4. It is designed to provide an additional opportunity to practice the skills and knowledge presented in the chapter and to prepare for the chapter 4 exam. The physical layer standards address three functional areas. Chapter 1 introduction to networking and the osi model. Network layer part a course on computer communication and networks, cthgu the slidesareadaptation ofthe slidesmade availableby the authorsofthe coursesmain textbook network layer 4 2 chapter 4. Describe basic principles of the physical layer standards. Give the sizes and offsets of the sequence of fragments delivered to the network layer at the destination host, assume all ip headers are 20 bytes.

Network layer 4 9 virtual circuits call setup, teardown for each call before data can flow each packet carries vc identifier not destination host address every router on sourcedest path maintains statefor each passing connection link, router resources bandwidth, buffers may be allocated to vc dedicated resources predictable. Internet protocol datagram format ipv4 addressing ipv6 4. Tcp segment structure reliable data transfer flow control connection management 4. Chapter 4 network layer page has been moved chalmers. Ip is a standard that defines the manner in which the network layers of two hosts interact. It is then the job of the network layer to get the segment to the destination host and pass the segment up the protocol stack to the transport layer. The first network has an mtu of 1024b, and the second has an mtu of 512 bytes.

The osi physical layer provides the means to transport the bits that make up a data link layer frame across the network media. Provides the means to both send and receive data when running multiple applications. Presentation application session transport network data link physical layer 7 layer 6 layer 5 layer 4 layer 3 layer 2 layer. Network layer silvia giordano ica, epfl the transport layer relies on the services of the network layer, which provides a communication service between hosts. Compare media access control techniques and logical. Chapter 4 the network layer george washington university. Ip addresses are 32 bit long, hierarchical addressing scheme. Were making these slides freely available to all faculty, students, readers. What is the maximum bandwidth at which an ip host can send 576byte packets without. Internet protocol mdatagram format mipv4 addressing micmp mipv6 r4. Chapter 4 network layer some of the materials in these notes are adapted from computer networking.

A message from the upper layer is divided into the packets. Explain the role of the data link layer in supporting communications across data networks. Describe the purpose and functions of the physical layer in the network. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Theyre in powerpoint form so you see the animations. A top down approach 6th edition jim kurose, keith ross addisonwesley march 2012 a note on the use of these ppt slides. Internet protocol datagram format fragmentation ipv4 addressing ipv6 chapter 4.

Understand principles behind network layer services. Using the proper media is an important part of network communications. Chapter 4 the network layer free ebook download as powerpoint presentation. The slides are adapted from kurose and ross, computer networks 5th edition and are 2009, kurose and ross.