千家论坛_智能建筑与智能家居技术交流社区
标题:
网线的认识
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作者:
qqxsr
时间:
2008-7-27 18:18
标题:
网线的认识
<p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 147pt; TEXT-ALIGN: left; mso-char-indent-count: 14.0; mso-pagination: widow-orphan;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"> </span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;">一般网线的接法<span lang="EN-US"><br/></span>网卡有<span lang="EN-US">10M,10M/100M,100M,1000M.<br/></span>网线有<span lang="EN-US">3</span>类<span lang="EN-US">(10M)</span>、<span lang="EN-US">5</span>类<span lang="EN-US">(100M)</span>、超<span lang="EN-US">5</span>类线<span lang="EN-US">(155M)</span>、<span lang="EN-US">6</span>类线<span lang="EN-US">(255M)..<br/></span>网卡有<span lang="EN-US">10M,10M/100M,100M,1000M.<br/></span>网线有<span lang="EN-US">3</span>类<span lang="EN-US">(10M)</span>、<span lang="EN-US">5</span>类<span lang="EN-US">(100M)</span>、超<span lang="EN-US">5</span>类线<span lang="EN-US">(155M)</span>、<span lang="EN-US">6</span>类线<span lang="EN-US">(255M)<br/></span>分别对应了不同的网卡和网速<span lang="EN-US">,</span>现在一般最低用<span lang="EN-US">5</span>类线<span lang="EN-US">.<br/></span>它们的网线做法都相同<span lang="EN-US">.<br/><a title="网络" href="http://net.it168.com/" target="_blank"><span lang="EN-US" style="COLOR: black; mso-bidi-font-size: 12.0pt;"><span lang="EN-US">网络</span></span></a></span>设备<span lang="EN-US">HUB</span>有两种接口<span lang="EN-US">:</span>普通口和级联口<span lang="EN-US">(UP-LINK).<br/> </span>普通口<span lang="EN-US">:</span>用于和网卡相连<span lang="EN-US">.(</span>直通线<span lang="EN-US">)<br/></span>也可用于和另一个<span lang="EN-US">HUB</span>普通口相联<span lang="EN-US">.(</span>交叉线<span lang="EN-US">)<br/> </span>级联口<span lang="EN-US">(UP-LINK):</span>用于和另一个<span lang="EN-US">HUB</span>普通口相联<span lang="EN-US">.(</span>直通线<span lang="EN-US">)<br/></span>注意<span lang="EN-US">:</span>有的<span lang="EN-US">HUB</span>级联口<span lang="EN-US">(UP-LINK)</span>为自适应<span lang="EN-US">,</span>就是直通线、交叉线都可以<span lang="EN-US">.<br/> </span>网线水晶头有两种做法标准<span lang="EN-US">.<br/> </span>标准为<span lang="EN-US">TIA/EIA568B</span>和<span lang="EN-US">TIA/EIA568A.<br/></span>制作水晶头首先将水晶头有卡的一面向下<span lang="EN-US">,</span>从左至右排序<span lang="EN-US">.12345678<br/>TIA/EIA-568B:1</span>、白橙，<span lang="EN-US">2</span>、橙，<span lang="EN-US">3</span>、白绿，<span lang="EN-US">4</span>、蓝，<span lang="EN-US">5</span>、白蓝，<span lang="EN-US">6</span>、绿，<span lang="EN-US">7</span>、白棕，<span lang="EN-US">8</span>、棕<span lang="EN-US"><br/>TIA/EIA-568A:1</span>、白绿，<span lang="EN-US">2</span>、绿，<span lang="EN-US">3</span>、白橙，<span lang="EN-US">4</span>、蓝，<span lang="EN-US">5</span>、白蓝，<span lang="EN-US">6</span>、橙，<span lang="EN-US">7</span>、白棕，<span lang="EN-US">8</span>、棕<span lang="EN-US"><br/></span>根据网线两端水晶头做法是否相同，有两种网线。<span lang="EN-US"><br/> </span>直通线<span lang="EN-US">: <br/> </span>网线两端水晶头做法相同，都是<span lang="EN-US">TIA/EIA-568B</span>标准<span lang="EN-US">,</span>或都是<span lang="EN-US">TIA/EIA-568A</span>标准<span lang="EN-US">.<br/></span>用于<span lang="EN-US">PC</span>网卡到<span lang="EN-US">HUB</span>普通口<span lang="EN-US">,HUB</span>普通口到<span lang="EN-US">HUB</span>级联口<span lang="EN-US">.</span>一般用途用直通线就可全部完成<span lang="EN-US">.<br/> </span>交叉线<span lang="EN-US">:<br/> </span>网线两端水晶头做法不相同，一端<span lang="EN-US">TIA/EIA-568B</span>标准<span lang="EN-US">,</span>一端<span lang="EN-US">TIA/EIA-568A</span>标准<span lang="EN-US">.<br/></span>用于<span lang="EN-US">PC</span>网卡到<span lang="EN-US">PC</span>网卡<span lang="EN-US">,HUB</span>普通口到<span lang="EN-US">HUB</span>普通口<span lang="EN-US">.<br/></span>如何判断用直通线或交叉线<span lang="EN-US">:<br/> </span>设备口相同<span lang="EN-US">:</span>交叉线<span lang="EN-US">,<br/> </span>设备口不同<span lang="EN-US">:</span>直通线<span lang="EN-US">.<br/> </span>三种用途的接法：<span lang="EN-US"><br/></span>一、<span lang="EN-US">PC</span>连接<span lang="EN-US">HUB<br/>A</span>类和<span lang="EN-US">B</span>类都用标准<span lang="EN-US">568B</span>接法：橙白、橙、绿白、蓝、蓝白、绿、棕白、棕<span lang="EN-US"><br/></span>二、<span lang="EN-US">PC</span>连接<span lang="EN-US">PC<br/>A</span>类：橙白、橙、绿白、蓝、蓝白、绿、棕白、棕<span lang="EN-US"><br/>B</span>类：绿白、绿、橙白、蓝、蓝白、橙、棕白、棕<span lang="EN-US"><br/></span>三、<span lang="EN-US">HUB</span>连接<span lang="EN-US">HUB<br/>A</span>类：橙白、橙、绿白、蓝、蓝白、绿、棕白、棕<span lang="EN-US"><br/>B</span>类：绿白、绿、橙白、蓝、蓝白、橙、棕白、棕<span lang="EN-US">
<p></p></span></span></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"> <p></p></span></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-pagination: widow-orphan;"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-bidi-font-size: 10.5pt; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"> <p></p></span></p>
作者:
volvo9527
时间:
2008-7-27 19:14
<p>好有帮助</p>
作者:
volvo9527
时间:
2008-7-28 15:30
<p>上海做弱电工程的，</p><p> <a href="mailto:ok9527@163.com">ok9527@163.com</a></p>
作者:
lilytonghua
时间:
2008-8-22 15:41
ding
作者:
skyfeng
时间:
2008-9-2 11:09
多谢哦
作者:
zhjy832
时间:
2008-9-3 08:57
<p>写的不错 </p>
作者:
fadzw123
时间:
2008-9-3 19:05
很好。。。
作者:
xiaomai728
时间:
2008-9-4 11:30
学习ing....
作者:
wangjingcheng
时间:
2008-9-5 07:56
不错不错学习了
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