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4.1 网络互连的层次 4.2 网络互连的设备 PowerPoint PPT Presentation


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第四章 网络互连设备. 4.1 网络互连的层次 4.2 网络互连的设备. 网络互连设备使网络硬件平台中最关键的系统。通常,我们将网络互连设备称为网络设备,足见其在网络中的重要性。本章将对各层互连设备的工作原理作一简单介绍,对于各种产品的性能指标以及系统集成时设备的选型知识,限于篇幅,这里不作详细介绍。. 4.1 网络互连的层次. 网络协议是分层的,那么网络互连也一定存在着互连层次的问题。根据网络层次的结构模型,网络互连的层次可以分为:. 1 .物理层互连

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4.1 网络互连的层次 4.2 网络互连的设备

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4 1 4 2

4.1

4.2


4 1 4 2


4 1 4 2

4.1


4 1 4 2

1

HUB


4 1 4 2

2


4 1 4 2

3

Router


4 1 4 2

4

(Gateway)


4 1 4 2


4 1 4 2

4.2

4.2.1(Repeater)


4 1 4 2

OSI/RM


4 1 4 2

4.2.2(Hub)

OSI/RMOSI/RM


4 1 4 2

1.


4 1 4 2

2.


4 1 4 2

3

PSMPSM


4 1 4 2

4


4 1 4 2

5


4 1 4 2

4.2.3Bridge

MAC


4 1 4 2

OSI/RM


4 1 4 2

CPU


4 1 4 2

1


4 1 4 2


4 1 4 2


4 1 4 2


4 1 4 2


4 1 4 2

2


4 1 4 2


4 1 4 2

3


4 1 4 2

201

202

104.Data

LANA

Bridge

LANB

104.Data

104

103


4 1 4 2

4

1)

2)


4 1 4 2

4.2.4

1.

19931994OSIMAC


4 1 4 2

2.


4 1 4 2


4 1 4 2


4 1 4 2

3.

/3COM LinkSwitch1000100Mbps


4 1 4 2

NetWareWindows NTLANServer


4 1 4 2

1)

2)

3)


4 1 4 2

4.2.5Router


4 1 4 2

OSI/RM


4 1 4 2

1

(TCPIP)


4 1 4 2

101

LANA

C.104 Data

Router

C.104 Data

LANC

LANB

104


4 1 4 2

2(Multiprotocol Router)

TCP/IPSPX/IPX


4 1 4 2

Multiprotocal Router

TCP/IP

LAN1

NetWare

NetWare

TCP/IP

TCP/IP

LAN3

TCP/IP

LAN2

TCP/IP

TCP/IP

NetWare


4 1 4 2

3

IntranetTrunkingIntranet


4 1 4 2

4.2.5Gateway

1

NetWare ClientLinuxMainframeNetWareLinuxLANNetWareClientLinuxGateway


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NetWare

Client

NetWare

Client

LAN

NetWare

Client

Gateway

Mainframe

Linux network

NetWare ClientMainframeGateway


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2


4 1 4 2

1 2

1

2


4 1 4 2


4 1 4 2

1.( )

A. B.2

C. D.

2.( )

A. B.

C. D.


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3.MAC( )

A.

B.

C.

D.

4.TCP/IP

A. B.

C. D.


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5.( )

A.255.255.255.252

B.255.255.255.248

C.255.255.255.240

D.255.255.255.224

6.( )

A.AppleTalk B.IPX

C.IP D.NetBIOS


4 1 4 2

7 ( )

A.

B.

C.

D.


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