<p><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">第二章</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?> </span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">方案总体设计</span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/><span class="tpccontent">2.1</span></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">设计原则</span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">整个局域网络采用多层数据交换原则设计,这样的设计方案使得整个局域网的运维管理,以及网络故障排除变的更加简单,减少了网络管理员的工作负责性,并且使未来的升级变的更简单且迅速。</span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/><span class="tpccontent">2.2</span></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">核心层设计</span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">核心区块主要负责以下几个工作:</span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/><span class="tpccontent"><span style="mso-char-type: symbol; mso-symbol-font-family: 'Times new=" New? Roman??><span style="mso-char-type: symbol; mso-symbol-font-family: 'Times new=" New? Roman??>l</span></span> </span></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">提供交换区块间的连接;</span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/><span class="tpccontent"><span style="mso-spacerun: yes"> </span></span></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">提供到其他区块(比如广域网区块)的访问;</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New? Roman?? ?Times new="New" mso-symbol-font-family: symbol; mso-char-type: AR-SA;><span style="mso-char-type: symbol; mso-symbol-font-family: 'Times new=" New? Roman??>l</span></span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/><span class="tpccontent"><span style="mso-char-type: symbol; mso-symbol-font-family: 'Times new=" New? Roman??><span style="mso-char-type: symbol; mso-symbol-font-family: 'Times new=" New? Roman??>l</span></span> </span></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">尽可能快的交换数据桢或数据包;</span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">建议将主设备间设在主楼的</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?>6</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">楼网络中心。由于核心层设备处于整个网络中是最关键的地位,任何故障都可能造成整个系统的瘫痪,因此设备的选型十分重要。从可靠性和安全性出发,结合价格因素的考虑。</span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/><span class="tpccontent">2.3</span></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">汇聚层设计</span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">汇聚层主要负责以下几个工作</span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/><span class="tpccontent"><span style="mso-char-type: symbol; mso-symbol-font-family: 'Times new=" New? Roman??><span style="mso-char-type: symbol; mso-symbol-font-family: 'Times new=" New? Roman??>l</span></span> </span></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">实现安全以及路由策略</span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/><span class="tpccontent"><span style="mso-spacerun: yes"> </span></span></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">实现核心层的流量重分布</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New? Roman?? ?Times new="New" mso-symbol-font-family: symbol; mso-char-type: AR-SA;><span style="mso-char-type: symbol; mso-symbol-font-family: 'Times new=" New? Roman??>l</span></span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/><span class="tpccontent"><span style="mso-char-type: symbol; mso-symbol-font-family: 'Times new=" New? Roman??><span style="mso-char-type: symbol; mso-symbol-font-family: 'Times new=" New? Roman??>l</span></span> </span></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">实现</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?>QOS</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">服务质量控制</span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">处于在汇聚层需要实现诸多的策略控制,对于交换机的应用要求较高。</span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/><span class="tpccontent">2.4 </span></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">网络拓扑图</span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/><?xml:namespace prefix = v ns = "urn:schemas-microsoft-com:vml" /><v:shapetype id="_x0000_t75" coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f"><v:stroke joinstyle="miter"></v:stroke><v:formulas><v:f 0? pixellinewidth="pixelLineWidth" lineDrawn? eqn="if linedrawn="></v:f><v:f 0? eqn="sum @0 1=" 1?></v:f><v:f 0? eqn="sum 0=" @1? 0="0"></v:f><v:f eqn="prod @2 1=" 1? 2?></v:f><v:f eqn="prod @3 21600=" pixelWidth? 21600?></v:f><v:f eqn="prod @3 21600=" 21600? pixelHeight?></v:f><v:f 0? eqn="sum @0 0=" 1?></v:f><v:f eqn="prod @6 1=" 1? 2?></v:f><v:f eqn="prod @7 21600=" pixelWidth? 21600?></v:f><v:f 0? eqn="sum @8 21600=" 21600?></v:f><v:f eqn="prod @7 21600=" 21600? pixelHeight?></v:f><v:f 0? eqn="sum @10 21600=" 21600?></v:f></v:formulas><v:path o:extrusi gradientshapeok="t" o:c></v:path><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:lock v:ext="edit" aspectratio="t"></o:lock></v:shapetype><br/><br/></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">综合布线部分</span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/><br/></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">前</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?> </span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">言</span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">高</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?> </span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">速以太网现已成为企业、政府、学校等机构的网络重要架构,而结构化布线系统是实现高速以太网的基础,它利用双绞线、光纤等高品质的传输介质,把电话、计算</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?> </span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">机网络、图象、安全报警、监控系统和建筑自动化管理系统所需的各种专用布线系统集成为一套完整的布线系统。这种开放式布线系统大大增加了网络的灵活性和对</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?> </span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">用户需求的适应能力,便于对布线系统的维护和管理,并可大大减少人力、物力和财力的投入。结构化布线系统是一个模块化的、灵活性极高的建筑物或建筑群的信</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?> </span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">息传输系统。</span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">结构化布线系统是一个全新的概念,它与传统的布线系统比较有许多优越性,具体表现为:</span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/><span class="tpccontent">1.</span></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">开放性</span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">传统的布线方式与用</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?> </span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">户选定的某种设备有关,即完成了设备的选型,也就确定了与所选设备适应的布线方式。那么更换另一种设备意味着全部更换原来的布线系统。各个系统独立设计,</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?> </span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">互不关联,彼此之间不能兼容。不难想象对一座建筑物进行重新布线之难度。这种重复投资建设将是人力、物力和财力的极大浪费。结构化布线系统由于采用开放式</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?> </span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">体系结构,符合各种国际上主流的标准,对所有符合通信标准的计算机设备和网络交换设备厂商是开放的,也就是说,结构化布线系统的应用与所用设备的厂商无</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?> </span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">关。而且对所有通信协议也是开放的。</span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/><span class="tpccontent">2.</span></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">灵活性</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?> </span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">由于传统的布线方式各个系统是封闭的,其体系结构是固定的,对于移动或增加设备是相当困</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?> </span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">难的,有时甚至是不可能的。结构化布线系统由于采用相同的传输介质,因此所有信息通道是通用的。信息通道可支持电话、传真、用户终端、</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?>ATM</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">网络工作站、</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?> </span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">以太网网络工作站及令牌环网网络工作站。物理上为星型拓扑结构。因此所有设备的开通、增加或更改无需改变布线系统,只需变动相应的网络设备以及必要的跳线</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?> </span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">管理即可。系统组网也可灵活多样,各部门既可以独立组网,又可以方便的互连,为合理的进行信息共享和信息交流创造了必要的条件。</span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/><span class="tpccontent">3.</span></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">可靠性</span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><br/></span><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">传</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?> </span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">统布线方式的相对独立和不兼容性,造成建筑物内多种布线系统同时存在、同时运行的局面。整个建筑物通信系统的稳定性是由各个不同的布线系统支持的,可以看</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?> </span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">出,传统布线系统使建筑物的通信系统异常脆弱。结构化布线系统采用高品质材料和组合压接技术,构成一个高标准的信息通道。所有器件经过</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?>UL</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">、</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?>CAS</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">、</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?> ISO</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">认证。经过专用仪器设备测试的每条信息通道可以保证其电气性能。可以支持</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?>100Base-T</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">及</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?>ATM</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">的应用。星型拓扑结构实现了点到点端接,任何一</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?> </span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New">条线路故障不会影响其它线路的运行。从而保证了系统的可靠运行。采用相同的传输介质可互为备用,提高了系统的冗余。</span></span></p>
<p><span class="tpccontent"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times new=" Roman?; New? Roman?? ?Times mso-bidi-font-family: mso-hansi-font-family: new="New"></span></span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times new=" AR-SA? mso-bidi-language: ZH-CN; mso-fareast-language: EN-US; mso-ansi-language: 1.0pt; mso-font-kerning: 宋体; mso-fareast-font-family: 12.0pt; mso-bidi-font-size: Roman?; New?><font face="宋体"></font><br/> </p></span>
[此贴子已经被作者于2009-5-6 12:10:04编辑过]
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