This presentation is the property of its rightful owner.
Sponsored Links
1 / 207

第三章 通信子网 PowerPoint PPT Presentation


  • 85 Views
  • Uploaded on
  • Presentation posted in: General

第三章 通信子网. 3.1 通信基本原理 3.2 计算机网互联的硬件设备 3.3 网络拓扑结构与分类 3.4 网络的传输介质 3.5 网络互联设备产品. 3.1 通信基本原理. 计算机网络的两大基本功能: 数据通信 与 数据处理 。 数据通信本身是一门独立的学科。. 数据通信就是 依照通信 协议 ,利用数据传输技术在 两个功能单元 之间传递数据 信息。. 数据通信与传统电报或电话 相比的特点: 实现的计算机之间或计算机与人 之间的通信,需要定义 严格的通信 协议或标准 。 数据传输的准确性和可靠性高。

Download Presentation

第三章 通信子网

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


4061789

  • 3.1

  • 3.2

  • 3.3

  • 3.4

  • 3.5


4061789

3.1


4061789


4061789

  • 108

  • 102


4061789


4061789


4061789


3 1 1

3.1.1


4061789

ASCII


4061789


4061789


4061789


Hz b s

Hzb/s


4061789


4061789


3 1 2

3.1.2

  • ASKFSKPSK

    NRZ


4061789


4061789

2.

u(t)

u(t)=Umsin( t+)

Um


4061789

  • ASK

  • Umsin( t+) 1

  • U(t)=

  • 0 0


4061789

(2) FSK

Umsin(1 t+0) 1

U(t) =

Umsin(2 t+0) 0


4061789

(3) PSK

Um sin( t+0) 1

U(t) =

Um sin(t+) 0


4061789

201


4061789

4

4

00011011

4445


4061789

3.


1 nrz 0 1 nrz

(1) NRZ

01

NRZ


2 t t 2 t 2 t 2 t 2

(2)

TT/2T/2

T/2T/2


4061789


4061789

(3)

01


4 pcm

4. PCM


4061789

PCM

PCM

PCM


4061789

PCM


4061789


4061789

f>=2B1/T>=2fMAX

BTfMAX


4061789


4061789

K

KLog2K


4061789

PCM

128

7


3 1 3

3.1.3


3 1 4

3.1.4


4061789


4061789

3


4061789


4061789


4061789


4061789


3 1 5

3.1.5


4061789


4061789


4061789

A

2

B

1

3

6

5

4


4061789


4061789


4061789


4061789


4061789

2.


4061789


4061789

A

2

B

1

3

6

5

4


4061789


4061789


4061789


4061789

//


4061789


4061789

3.


4061789


4061789

A

2

B

1

3

6

5

4


4061789


4061789

/


4061789


4061789


4061789

4.

ATM

ATM


3 1 6

3.1.6


4061789

2.

MUX


4061789

FDMA


4061789


4061789

TDMA


4061789


4061789


4061789


4061789

WDMA


4061789

CDMA


3 1 7

3.1.7


3 1 8

3.1.8


4061789

3002400b/s102106

48009600b/s102104


4061789

109


4061789

3.2


4061789


4061789


4061789


3 2 1

3.2.1

CPU


4061789

1


4061789

2


4061789

3


4061789

10M100M10M/100M1000M

PCIISAEISA


4061789


4061789

3Com

ACCTON

DLink


3 2 2

3.2.2


4061789


4061789


3 2 3

3.2.3

FDDIATM


4061789

LAN


4061789


1 10base t

1. 10BASET

10BASET


4061789

2.

4Mb/s10 Mb/s16 Mb/s

/LAN

/


4061789

RISC610Mb/s


4061789


4061789

/


3 eifo

3. EIFO

Ethernet-in-FDDI-out

/100Mb/sFDDI


4061789

EIFO/10Base-T EthernetFDDI

MAC


4061789

EIFO


4061789

4.

  • Ethernet

  • Ethernet

  • FDDI


4061789


4061789

  • 10Mb/s

  • Ethernet

  • 100Mb/s FDDI


4061789


A b c 10mb s ethernet d 100mb s fddi

A

B

C10Mb/s Ethernet

D100Mb/s FDDI


5 atm

5. ATM

Asynchronous Transfer Mode


4061789

155Mb/s

ATMUTP

MAC

ATMLAN


4061789

6.

SNMP


3 2 4

3.2.4


4061789


4061789

  • LAN


Mac lan

MAC

LAN


Ethernet 30000 15000

Ethernet3000015000


4061789

LAN


4061789


4061789


4061789


4061789


4061789


4061789


3 2 5

3.2.5


4061789


4061789


4061789


4061789

  • 23


4061789


4061789


4061789

  • IP


4061789

  • IPIP


4061789

IP


4061789


4061789

3

IP over SDHIP over DWDM


4061789

CPUCPUATM


4061789

ASCI

ASCIASCI


4061789

3


Ip over sdh ip over dwdm

IP over SDHIP over DWDM

SDHSynchronous Digital Hierarchy

DWDM


4061789

IP


4061789

IPIP IPQoS

QoS


4061789


4061789

Ipv4

RSVP

DiffServ

MPLS


4061789


4061789


4061789


4061789


4061789


4061789


4061789


4061789


4061789

:


4061789


4061789


4061789


4061789

RIP


4061789


4061789

OSPF

OSPF


4061789

5000

15


4061789


4061789

ATMX.25


4061789


3 2 6

3.2.6


4061789


4061789

3.3


4061789


4061789


4061789

3.4


4061789


4061789


4061789


4061789

STP

UTP5

12


4061789

3

10Mb/s10BASET4Mb/s


4061789

43

16Mb/s

10BASET16Mb/s


4061789

5100Mb/s

100Mb/s TX


4061789

RJ-45 RJ-11


4061789

  • UTP/STP

  • TIA/EIA568ATIA/EIA568B


4061789

310Mb/s10Base T4Mb/s

416Mb/s 10Base T16Mb/s

5100Mb/s100Mb/sTX


4061789

24

3003400Hz


4061789

4kHz24

268kHz


15km 10mb s 100m

15km10Mb/s100m


4061789

  • 10100kHz


4061789

1

2BNC

CATV75


4061789


4061789

50

CATV75


4061789

50100

75


4061789


4061789


4061789

3


4061789


4061789

68


4061789

240GHz


4061789

3


4061789

3.5

Ethernet, Token-Ring, SNA, FDDI, Fast Ethernet, ATM, 1Gb Ethernet, VLAN VNET


4061789

FDDI

WAN

OSI


4061789

FDDI

100Mb/s


Fast ethernet

Fast Ethernet

10Mb EthernetCSMA/CD


4061789

/


Switch vlan

Switch VLAN

Switch

3

VLAN


4061789

LAN

2LAN

23IP


  • Login