mcgraw-hill©the mcgraw-hill companies, inc., 2000 chapter 2 the osi model and tcp/ip protocol suite
TRANSCRIPT
![Page 1: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/1.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Chapter 2
The OSI Model and
TCP/IP Protocol Suite
![Page 2: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/2.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
CONTENTSCONTENTS• THE OSI MODEL• LAYERS IN THE OSI MODEL• TCP/IP PROTOCOL SUITE• ADDRESSING• TCP/IP VERSIONS
![Page 3: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/3.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
THE OSI
MODEL
2.12.1
![Page 4: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/4.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
ISO is the organization. OSI is the model.
![Page 5: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/5.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 2-1
OSI Model
![Page 6: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/6.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 2-2 OSI layers
![Page 7: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/7.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Headers are added to the data at layers
6, 5, 4, 3, and 2. Trailers are usually added only at layer 2.
![Page 8: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/8.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 2-3 An exchange using the OSI model
![Page 9: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/9.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
LAYERS IN
THE OSI
MODEL
2.22.2
![Page 10: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/10.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 2-4
Physical Layer
![Page 11: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/11.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 2-5
Data Link Layer
![Page 12: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/12.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 2-6
Node-to-node delivery
![Page 13: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/13.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 2-7
Network Layer
![Page 14: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/14.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 2-8 End-to-end delivery
![Page 15: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/15.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 2-9
Transport Layer
![Page 16: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/16.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 2-10
Reliable end-to-end delivery of a message
![Page 17: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/17.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 2-11
Session Layer
![Page 18: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/18.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 2-12
Presentation Layer
![Page 19: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/19.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 2-13
Application Layer
![Page 20: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/20.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 2-14
Summary of layers
![Page 21: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/21.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
TCP/IP PROTOCOL
SUITE
2.32.3
![Page 22: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/22.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 2-15 TCP/IP and OSI model
![Page 23: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/23.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
ADDRESSING
2.42.4
![Page 24: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/24.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 2-16
Addresses in TCP/IP
![Page 25: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/25.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 2-17
Relation-ship of layers and addresses in TCP/IP
![Page 26: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/26.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Example 1Example 1
Figure 2.18 shows an example of physical addresses.
![Page 27: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/27.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 2-18
Physical addresses
![Page 28: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/28.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Example 2Example 2
Most local area networks use a 48-bit (6 bytes) physical address written as 12 hexadecimal digits, with every 2 bytes separated by a hyphen as shown below:
07-01-02-01-2C-4B A 6-byte (12 hexadecimal digits) physical address
![Page 29: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/29.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Example 3Example 3
Figure 2.19 shows an example of Internet addresses.
![Page 30: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/30.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 2-19
IP addresses
![Page 31: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/31.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Example 4Example 4
As we will see in Chapter 4, an Internet address (in IPv4) is 32 bits in length, normally written as four decimal numbers, with each number representing 1 byte. The numbers are separated by a dot. Below is an example of such an address.
132.24.75.9
![Page 32: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/32.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Example 5Example 5
Figure 2.20 shows an example of transport layer communication.
![Page 33: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/33.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Figure 2-20
Port addresses
![Page 34: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/34.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Example 6Example 6
As we will see in Chapters 11 and 12, a port address is a 16-bit address represented by one decimal number as shown below.
753 A 16-bit port address
![Page 35: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/35.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
TCP/IP VERSIONS
2.52.5
![Page 36: McGraw-Hill©The McGraw-Hill Companies, Inc., 2000 Chapter 2 The OSI Model and TCP/IP Protocol Suite](https://reader033.vdocument.in/reader033/viewer/2022051315/56649e3f5503460f94b309f3/html5/thumbnails/36.jpg)
McGraw-Hill ©The McGraw-Hill Companies, Inc., 2000
Versions:• Version 4 (current)• Version 5 • Version 6 (future)