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1、实用标准VLAN技术在校园网中的应用大冷蒙古族九年制学校精彩文档实用标准---------李东方中文摘要VLAN(VirtualLocalAreaNetwork)的中文名为“虚拟局域网”。VLAN是一种将局域网设备从逻辑上划分成一个个网段,从而实现虚拟工作组的新兴数据交换技术。这一新兴技术主要应用于交换机和路由器中,但主流应用还是在交换机之中。但又不是所有交换机都具有此功能,只有VLAN协议的第三层以上交换机才具有此功能。VLAN在逻辑上等价于广播域。更具体的说,我们可以将VLAN类比成一组最终
2、用户的集合。这些用户可以处在不同的物理LAN上,但他们之间可以象在同一个LAN上那样自由通信而不受物理位置的限制。在这里,网络的定义和划分与物理位置和物理连接是没有任何必然联系的。网络管理员可以根据不同的需要,通过相应的网络软件灵活的建立和配置虚拟网,并为每个虚拟网分配它所需要的带宽。随着校园网的不断发展,规模在不断扩大,用户在不断增加,网络应用也在不断增长,网络变得越来越拥挤,冲突不断产生,管理难度日益加大。学校内部对于灵活、动态地组建LAN网段的要求也越来越多,客观上要求LAN本身的结构可以
3、实现动态组建、调整和管理。为了有效地提高网络管理的灵活性,提高网络效率和网络安全性,充分合理地进行VLAN划分,是必需的。关键词:VLAN;交换机;广播域;配置;规划;管理;局域网;AbstractVLAN(VirtualLocalAreaNetwork)Chinesenamed“virtuallocalareanetwork”.VLANisonekinddivideslogicallythelocalareanetworkequipmenteachonewebpage,thusrealizes
4、thehypothesizedworkteam'semergingdataexchangetechnology.Thisemergingtechnologymainlyappliesintheswitchboardandtherouter,butmainstreamapplicationinswitchboard.Butisnotallswitchboardshasthisfunction,onlythentheVLANagreement'sthirdaboveswitchboardonlyth
5、enhasthisfunction.VLANistosolveonekindofagreementwhichfastEthernet'sbroadcastquestionandthesecurityproposed,itincreasedtheVLANheadinthefastEthernetframe'sfoundation,withVLANIDtheuserpartingforayoungerworkteam,usertwoexchangevisitsbetweenthelimitdiffe
6、rentworkteam's,eachworkteamisavirtuallocalareanetwork.Virtuallocalareanetwork'sadvantageismaylimitthebroadcastingarea,andcanformthehypothesizedworkteam,dynamic精彩文档实用标准managementnetwork.Alongwiththecampusnet'sunceasingdevelopment,thescaleisexpandingun
7、ceasingly,theuserisincreasingunceasingly,thenetworkapplicationunceasinglyisalsogrowing,thenetworkbecomesmoreandmorecrowded,theconflictproducesunceasingly,managesthedifficultytoenlargedaybyday.Theschoolinteriorregardingnimble,dynamicsetsuptheLANwebpag
8、etherequesttobealsogettingmoreandmore,objectivelyrequestsLANstructuretobepossibletorealizedynamicsetsup,theadjustmentandthemanagement.Toenhancethenetworkmanagementeffectivelytheflexibility,raisesthenetworkefficiencyandthenetworksecurity,carriesontheV