整體網絡設計方案

頁數(shù) 37 字數(shù) 17988

摘要
在參與衡陽市政府信息網工程的過程中，以整體網絡設計方案為研究對象，研究了此項目的組網技術，網絡拓撲結構以及所選用的設備。
本項目的總體目標是建成一個“一個中心、內外兩網、多平臺、跨部門、互聯(lián)互通、信息共享”的“衡陽市黨政信息網”。
網絡主干采用千兆以太網，100M到桌面。網絡拓撲結構為星形結構。采用光纖＋雙絞線，光纖到大院、至大樓、至樓層。
整個網絡分內部網與外部網兩個部分，兩網兩套線路，物理隔離。兩網中心平臺均設在市政府新辦公樓七樓網控中心
整個網絡的拓撲結構為星型結構，網絡中心機房放置于政府大樓7樓{INTERNET接入點}，它們采用單模光纖連接，其他部門交換機域網絡中心機房之間的物理線路全部采用多模光纖連接。各節(jié)點水平布線系統(tǒng)全部采用超五類五屏蔽雙絞線，綜合部線工程包括信息點359個，網絡核心用戶群分為11個節(jié)點。

關鍵字 :局域網,以太網,拓撲結構,交換機,布線系統(tǒng)。

Abstract
This paper describe the whole program of informational project of the goverment of HengYang, including the technology of network, Top structure of net, the choice of the device,and some of my own experience.
The main target of this program is to build up a information net of communism and goverment which has one centre ,two nets(a internal net and a external net),multiple platforms,and crossing over deparment,interconnecting,information sharing.
The main item of the network employ 1000M Ethernet,100M to desktop.the top stucture of the network is star structure which use fiber and double-cross line.the fiber covers the courtyard,the multi-storied building and the story.
The whole network is made up of internal net and external net which has its own line and phisicalt isolation. The central platform of the two network is set up at net_controlled centre which is on the 7th floor of the new government office building.They are all connected with fiber.the other departments's switchboard of central net room are connected with fiber.Each node's horizontal distribute system all use hyper-utptwisted-pair，The composite distribute project include 359 information nodes, the core net user groups separate into 11 nodes.

Key word: lan, switch, earthnet work, pds,
參考文獻
1． 李慧文，何占清編。Network網絡工程布線。北京：電子工業(yè)出版社，1998
2． Robert Breyer&Sean Riley. 交換式以太網和快速型以太網。北京：電子工業(yè)出版社，1995譯
3． 黎連業(yè)。網絡工程與綜合布線系統(tǒng)。清華大學出版社，1997
4． 黎連業(yè)。網絡綜合布線系統(tǒng)和施工技術。機械工業(yè)出版社，2000
5． 宋健鋒。綜合布線工程實用設計施工手冊。中國建筑工業(yè)出版社。2000