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<div class="theme-admonition theme-admonition-warning admonition_xJq3 alert alert--warning"><div class="admonitionHeading_Gvgb"><span class="admonitionIcon_Rf37"><svg viewBox="0 0 16 16"><path fill-rule="evenodd" d="M8.893 1.5c-.183-.31-.52-.5-.887-.5s-.703.19-.886.5L.138 13.499a.98.98 0 0 0 0 1.001c.193.31.53.501.886.501h13.964c.367 0 .704-.19.877-.5a1.03 1.03 0 0 0 .01-1.002L8.893 1.5zm.133 11.497H6.987v-2.003h2.039v2.003zm0-3.004H6.987V5.987h2.039v4.006z"></path></svg></span>注意</div><div class="admonitionContent_BuS1"><p>🚧施工中🚧</p><p>这篇文章还没有写完呢！😛</p></div></div>
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<p>寻线器的“对线”功能也叫线序测试（Wiremap），用于检查网络链路内部8芯线对的连接情况和品质。</p>
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<p>如果我们要使用对线功能，一般是如下情况：</p>
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<ol>
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<li>
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<p><strong>检查一段网络线路物理层是否正常(比如用户端口到交换机)</strong></p>
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</li>
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<li>
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<p><strong>检查某根网线是不是工作正常</strong></p>
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</li>
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</ol>
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<p>我们先来讲对线网线的操作：</p>
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<h2 class="anchor anchorWithStickyNavbar_LWe7" id="网线的对线操作流程">网线的对线：操作流程<a href="#网线的对线操作流 程" class="hash-link" aria-label="Direct link to 网线的对线：操作流程" title="Direct link to 网线的对线：操作流程"></a></h2>
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<ol>
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<li>
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<p><strong>连接线缆两端</strong>： 将待测试网线的一端连接到发射器的RJ45端口，另一端连接到接收器的RJ45端口。</p>
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</li>
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<li>
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<p><strong>开启对线模式</strong>： 将发射器的功能选择开关拨到“对线”档位。</p>
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</li>
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<li>
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<p><strong>观察并解读指示灯</strong>： 此时，发射器和接收器上的8个线序指示灯（分别对应1-8号线芯）会开始闪烁。你需要对比两端的亮灯情况来判断线路状态。</p>
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</li>
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</ol>
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<h3 class="anchor anchorWithStickyNavbar_LWe7" id="闪烁情况">闪烁情况<a href="#闪烁情况" class="hash-link" aria-label="Direct link to 闪烁情况" title="Direct link to 闪烁情况"></a></h3>
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<p>网络链路可能会有如下情况：</p>
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<ul>
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<li>
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<p><strong>正常</strong>:如果是标准的直通线（T568B或T568A），发射器和接收器上的1到8号指示灯会一一对应、同步、依次快速闪烁。这是最理想的状态。</p>
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</li>
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<li>
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<p><strong>断路/开路</strong> (Open): 线缆的线芯断开，体现为某一根或几根线芯的指示灯在<strong>两端都不亮</strong>，这些线芯存在断路，信号无法通过。</p>
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</li>
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<li>
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<p><strong>短路</strong>：线芯之间互相接触了，体现为发射端正常，但是<strong>接收端</strong>的几根线芯不亮，说明内部存在短路，通常是水晶头没做好，需要重做水晶头。</p>
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</li>
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<li>
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<p><strong>乱序/错线</strong>(Miswire):线序接乱了，表现为发射端和接收端指示灯的闪烁顺序不一致（例如，发射器上是1-2-3-4...，而接收器上是1-3-2-4...），需要重做水晶头。</p>
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</li>
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<li>
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<p><strong>交叉</strong> (Crossover): 如果是交叉线，指示灯会按照交叉的配对规则亮起（如1对3，2对6等）。</p>
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</li>
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</ul>
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<h2 class="anchor anchorWithStickyNavbar_LWe7" id="物理线路的排查">物理线路的排查<a href="#物理线路的排查" class="hash-link" aria-label="Direct link to 物理线路的排查" title="Direct link to 物理线路的排查"></a></h2>
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<p>对于物理线路的排查，其实和测试网线差不多。最重要的是，需要知道某些网络设备(如路由器，交换机等)可以视为寻线器的接收端。如果网线一端连接发射端，另一端连接路由器或交换机。那么在正常工作的情况下，发射端就会像网线那样正常亮起。在这里不需要使用寻线器的接收端。</p>
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<h3 class="anchor anchorWithStickyNavbar_LWe7" id="系统地排查">系统地排查<a href="#系统地排查" class="hash-link" aria-label="Direct link to 系统地排查" title="Direct link to 系统地排查"></a></h3>
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<p>这种方法只能说明寻线器到信号发射设备（楼层交换机，宿舍路由器等）的整体线路有没有问题，如果有问题，对线操作本身无法测出是哪一个部分有问题，这个时候，就需要我们进行系统的方法测试排查：</p>
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<p>下面是理想情况下校园网的结构，在实际工作中，每个片区我们只需要接触到其中的一部分：</p>
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<p>对线结果显示有问题的话，我们可以更换已知的正常设备来排查错误的地方</p>
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<p>假如你遇到了这样的情况：用户ip查不到，怀疑是物理连接错误，于是你将用户的网线从ta的电脑上拔下来，插在对线器上：</p>
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<p>这个时候，对线还是失败的，于是你将用户的网线从端口上拔下来，拿出一根已知是工作正常的网线，插在对线器和端口上：</p>
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<p>这下成功对线了，由此我们可以得出<strong>是用户的网线有问题</strong></p>
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<p>对于其它错误也是同样的道理，不断排除工作正常的环节，就可以确定工作不正常的环节，找到出现错误的地方之后，就可以按照情况进行修理了</p></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="row margin-top--sm theme-doc-footer-edit-meta-row"><div class="col"><a href="https://github.com/ZSCNetSupportDept/website/tree/master/docs/wiki/03-技能/02-网络相关/对线.md" target="_blank" rel="noopener noreferrer" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div><div class="col lastUpdated_JAkA"><span class="theme-last-updated">Last updated<!-- --> on <b><time datetime="2025-07-28T10:01:04.000Z" itemprop="dateModified">Jul 28, 2025</time></b></span></div></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" href="/docs/wiki/技能/网络相关/寻线器-介绍"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">寻线器-介绍</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/docs/wiki/技能/网络相关/寻线"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">寻线器-寻线</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#网线的对线操作流程" class="table-of-contents__link toc-highlight">网线的对线：操作流程</a><ul><li><a href="#闪烁情况" class="table-of-contents__link toc-highlight">闪烁情况</a></li></ul></li><li><a href="#物理线路的排查" class="table-of-contents__link toc-highlight">物理线路的排查</a><ul><li><a href="#系统地排查" class="table-of-contents__link toc-highlight">系统地排查</a></li></ul></li></ul></div></div></div></div></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2025 ZSCNetworkSupport,Built with Docusaurus.</div></div></div></footer></div>
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