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</header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="站点"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="目录" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">目录</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">移至侧栏</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">隐藏</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">序言</div> </a> </li> <li id="toc-技术信息" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#技术信息"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>技术信息</span> </div> </a> <button aria-controls="toc-技术信息-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>开关技术信息子章节</span> </button> <ul id="toc-技术信息-sublist" class="vector-toc-list"> <li id="toc-物理层功能" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#物理层功能"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>物理层功能</span> </div> </a> <ul id="toc-物理层功能-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-集線器的種類" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#集線器的種類"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>集線器的種類</span> </div> </a> <ul id="toc-集線器的種類-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-参见" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#参见"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>参见</span> </div> </a> <ul id="toc-参见-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-参考文献" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#参考文献"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>参考文献</span> </div> </a> <ul id="toc-参考文献-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-外部链接" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#外部链接"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>外部链接</span> </div> </a> <ul id="toc-外部链接-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="目录" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="开关目录" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">开关目录</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">集線器</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="前往另一种语言写成的文章。52种语言可用" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-52" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">52种语言</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%85%D9%88%D8%B2%D8%B9_(%D8%AD%D8%A7%D8%B3%D9%88%D8%A8)" title="موزع (حاسوب) – 阿拉伯语" lang="ar" hreflang="ar" data-title="موزع (حاسوب)" data-language-autonym="العربية" data-language-local-name="阿拉伯语" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Amestador" title="Amestador – 阿斯图里亚斯语" lang="ast" hreflang="ast" data-title="Amestador" data-language-autonym="Asturianu" data-language-local-name="阿斯图里亚斯语" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Hab" title="Hab – 阿塞拜疆语" lang="az" hreflang="az" data-title="Hab" data-language-autonym="Azərbaycanca" data-language-local-name="阿塞拜疆语" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%A5%D1%8A%D0%B1" title="Хъб – 保加利亚语" lang="bg" hreflang="bg" data-title="Хъб" data-language-autonym="Български" data-language-local-name="保加利亚语" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%87%E0%A6%A5%E0%A6%BE%E0%A6%B0%E0%A6%A8%E0%A7%87%E0%A6%9F_%E0%A6%B9%E0%A6%BE%E0%A6%AC" title="ইথারনেট হাব – 孟加拉语" lang="bn" hreflang="bn" data-title="ইথারনেট হাব" data-language-autonym="বাংলা" data-language-local-name="孟加拉语" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Koncentrator" title="Koncentrator – 波斯尼亚语" lang="bs" hreflang="bs" data-title="Koncentrator" data-language-autonym="Bosanski" data-language-local-name="波斯尼亚语" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Concentrador" title="Concentrador – 加泰罗尼亚语" lang="ca" hreflang="ca" data-title="Concentrador" data-language-autonym="Català" data-language-local-name="加泰罗尼亚语" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Ethernetov%C3%BD_hub" title="Ethernetový hub – 捷克语" lang="cs" hreflang="cs" data-title="Ethernetový hub" data-language-autonym="Čeština" data-language-local-name="捷克语" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Hub_(datanetv%C3%A6rk)" title="Hub (datanetværk) – 丹麦语" lang="da" hreflang="da" data-title="Hub (datanetværk)" data-language-autonym="Dansk" data-language-local-name="丹麦语" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Hub_(Netzwerktechnik)" title="Hub (Netzwerktechnik) – 德语" lang="de" hreflang="de" data-title="Hub (Netzwerktechnik)" data-language-autonym="Deutsch" data-language-local-name="德语" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%A0%CE%BB%CE%AE%CE%BC%CE%BD%CE%B7_(%CE%B4%CE%AF%CE%BA%CF%84%CF%85%CE%BF_%CF%85%CF%80%CE%BF%CE%BB%CE%BF%CE%B3%CE%B9%CF%83%CF%84%CF%8E%CE%BD)" title="Πλήμνη (δίκτυο υπολογιστών) – 希腊语" lang="el" hreflang="el" data-title="Πλήμνη (δίκτυο υπολογιστών)" data-language-autonym="Ελληνικά" data-language-local-name="希腊语" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Ethernet_hub" title="Ethernet hub – 英语" lang="en" hreflang="en" data-title="Ethernet hub" data-language-autonym="English" data-language-local-name="英语" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Koncentrilo" title="Koncentrilo – 世界语" lang="eo" hreflang="eo" data-title="Koncentrilo" data-language-autonym="Esperanto" data-language-local-name="世界语" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Concentrador" title="Concentrador – 西班牙语" lang="es" hreflang="es" data-title="Concentrador" data-language-autonym="Español" data-language-local-name="西班牙语" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Kohtv%C3%B5rgu_jaotur" title="Kohtvõrgu jaotur – 爱沙尼亚语" lang="et" hreflang="et" data-title="Kohtvõrgu jaotur" data-language-autonym="Eesti" data-language-local-name="爱沙尼亚语" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Kontzentratzaile" title="Kontzentratzaile – 巴斯克语" lang="eu" hreflang="eu" data-title="Kontzentratzaile" data-language-autonym="Euskara" data-language-local-name="巴斯克语" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%87%D8%A7%D8%A8" title="هاب – 波斯语" lang="fa" hreflang="fa" data-title="هاب" data-language-autonym="فارسی" data-language-local-name="波斯语" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Keskitin" title="Keskitin – 芬兰语" lang="fi" hreflang="fi" data-title="Keskitin" data-language-autonym="Suomi" data-language-local-name="芬兰语" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Hub_Ethernet" title="Hub Ethernet – 法语" lang="fr" hreflang="fr" data-title="Hub Ethernet" data-language-autonym="Français" data-language-local-name="法语" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Concentrador" title="Concentrador – 加利西亚语" lang="gl" hreflang="gl" data-title="Concentrador" data-language-autonym="Galego" data-language-local-name="加利西亚语" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A8%D7%9B%D7%96%D7%AA" title="רכזת – 希伯来语" lang="he" hreflang="he" data-title="רכזת" data-language-autonym="עברית" data-language-local-name="希伯来语" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%A8%E0%A5%87%E0%A4%9F%E0%A4%B5%E0%A4%B0%E0%A5%8D%E0%A4%95_%E0%A4%B9%E0%A4%AC" title="नेटवर्क हब – 印地语" lang="hi" hreflang="hi" data-title="नेटवर्क हब" data-language-autonym="हिन्दी" data-language-local-name="印地语" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Koncentrator" title="Koncentrator – 克罗地亚语" lang="hr" hreflang="hr" data-title="Koncentrator" data-language-autonym="Hrvatski" data-language-local-name="克罗地亚语" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Hub_(h%C3%A1l%C3%B3zat)" title="Hub (hálózat) – 匈牙利语" lang="hu" hreflang="hu" data-title="Hub (hálózat)" data-language-autonym="Magyar" data-language-local-name="匈牙利语" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Concentrator" title="Concentrator – 国际语" lang="ia" hreflang="ia" data-title="Concentrator" data-language-autonym="Interlingua" data-language-local-name="国际语" class="interlanguage-link-target"><span>Interlingua</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Hub" title="Hub – 印度尼西亚语" lang="id" hreflang="id" data-title="Hub" data-language-autonym="Bahasa Indonesia" data-language-local-name="印度尼西亚语" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Hub_(informatica)" title="Hub (informatica) – 意大利语" lang="it" hreflang="it" data-title="Hub (informatica)" data-language-autonym="Italiano" data-language-local-name="意大利语" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%83%8F%E3%83%96_(%E3%83%8D%E3%83%83%E3%83%88%E3%83%AF%E3%83%BC%E3%82%AF%E6%A9%9F%E5%99%A8)" title="ハブ (ネットワーク機器) – 日语" lang="ja" hreflang="ja" data-title="ハブ (ネットワーク機器)" data-language-autonym="日本語" data-language-local-name="日语" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%9D%B4%EB%8D%94%EB%84%B7_%ED%97%88%EB%B8%8C" title="이더넷 허브 – 韩语" lang="ko" hreflang="ko" data-title="이더넷 허브" data-language-autonym="한국어" data-language-local-name="韩语" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%A5%D0%B0%D0%B1" title="Хаб – 柯尔克孜语" lang="ky" hreflang="ky" data-title="Хаб" data-language-autonym="Кыргызча" data-language-local-name="柯尔克孜语" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/%C5%A0akotuvas_(tinklo)" title="Šakotuvas (tinklo) – 立陶宛语" lang="lt" hreflang="lt" data-title="Šakotuvas (tinklo)" data-language-autonym="Lietuvių" data-language-local-name="立陶宛语" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Centrmezgls" title="Centrmezgls – 拉脱维亚语" lang="lv" hreflang="lv" data-title="Centrmezgls" data-language-autonym="Latviešu" data-language-local-name="拉脱维亚语" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%9C%D1%80%D0%B5%D0%B6%D0%B5%D0%BD_%D1%80%D0%B0%D0%B7%D0%B2%D0%BE%D0%B4%D0%BD%D0%B8%D0%BA" title="Мрежен разводник – 马其顿语" lang="mk" hreflang="mk" data-title="Мрежен разводник" data-language-autonym="Македонски" data-language-local-name="马其顿语" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Hab_(rangkaian)" title="Hab (rangkaian) – 马来语" lang="ms" hreflang="ms" data-title="Hab (rangkaian)" data-language-autonym="Bahasa Melayu" data-language-local-name="马来语" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Hub_(hardware)" title="Hub (hardware) – 荷兰语" lang="nl" hreflang="nl" data-title="Hub (hardware)" data-language-autonym="Nederlands" data-language-local-name="荷兰语" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Hub_(datanettverk)" title="Hub (datanettverk) – 书面挪威语" lang="nb" hreflang="nb" data-title="Hub (datanettverk)" data-language-autonym="Norsk bokmål" data-language-local-name="书面挪威语" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%A8%E0%A9%88%E0%A9%B1%E0%A8%9F%E0%A8%B5%E0%A8%B0%E0%A8%95_%E0%A8%B9%E0%A9%B1%E0%A8%AC" title="ਨੈੱਟਵਰਕ ਹੱਬ – 旁遮普语" lang="pa" hreflang="pa" data-title="ਨੈੱਟਵਰਕ ਹੱਬ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="旁遮普语" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Koncentrator_sieciowy" title="Koncentrator sieciowy – 波兰语" lang="pl" hreflang="pl" data-title="Koncentrator sieciowy" data-language-autonym="Polski" data-language-local-name="波兰语" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%D9%87%D8%A7%D8%A8" title="هاب – 普什图语" lang="ps" hreflang="ps" data-title="هاب" data-language-autonym="پښتو" data-language-local-name="普什图语" class="interlanguage-link-target"><span>پښتو</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Concentrador" title="Concentrador – 葡萄牙语" lang="pt" hreflang="pt" data-title="Concentrador" data-language-autonym="Português" data-language-local-name="葡萄牙语" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A1%D0%B5%D1%82%D0%B5%D0%B2%D0%BE%D0%B9_%D0%BA%D0%BE%D0%BD%D1%86%D0%B5%D0%BD%D1%82%D1%80%D0%B0%D1%82%D0%BE%D1%80" title="Сетевой концентратор – 俄语" lang="ru" hreflang="ru" data-title="Сетевой концентратор" data-language-autonym="Русский" data-language-local-name="俄语" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Ethernet_hub" title="Ethernet hub – Simple English" lang="en-simple" hreflang="en-simple" data-title="Ethernet hub" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Rozbo%C4%8Dova%C4%8D_(ethernet)" title="Rozbočovač (ethernet) – 斯洛伐克语" lang="sk" hreflang="sk" data-title="Rozbočovač (ethernet)" data-language-autonym="Slovenčina" data-language-local-name="斯洛伐克语" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%A5%D0%B0%D0%B1_(%D0%BC%D1%80%D0%B5%D0%B6%D0%BD%D0%B8_%D1%83%D1%80%D0%B5%D1%92%D0%B0%D1%98)" title="Хаб (мрежни уређај) – 塞尔维亚语" lang="sr" hreflang="sr" data-title="Хаб (мрежни уређај)" data-language-autonym="Српски / srpski" data-language-local-name="塞尔维亚语" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-su mw-list-item"><a href="https://su.wikipedia.org/wiki/Hub" title="Hub – 巽他语" lang="su" hreflang="su" data-title="Hub" data-language-autonym="Sunda" data-language-local-name="巽他语" class="interlanguage-link-target"><span>Sunda</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/N%C3%A4tverkshubb" title="Nätverkshubb – 瑞典语" lang="sv" hreflang="sv" data-title="Nätverkshubb" data-language-autonym="Svenska" data-language-local-name="瑞典语" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%B5%E0%AE%B2%E0%AF%88%E0%AE%AA%E0%AF%8D%E0%AE%AA%E0%AE%BF%E0%AE%A9%E0%AF%8D%E0%AE%A9%E0%AE%B2%E0%AF%8D_%E0%AE%AE%E0%AF%88%E0%AE%AF%E0%AE%AE%E0%AF%8D" title="வலைப்பின்னல் மையம் – 泰米尔语" lang="ta" hreflang="ta" data-title="வலைப்பின்னல் மையம்" data-language-autonym="தமிழ்" data-language-local-name="泰米尔语" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%AE%E0%B8%B1%E0%B8%9A%E0%B8%AD%E0%B8%B5%E0%B9%80%E0%B8%97%E0%B8%AD%E0%B8%A3%E0%B9%8C%E0%B9%80%E0%B8%99%E0%B9%87%E0%B8%95" title="ฮับอีเทอร์เน็ต – 泰语" lang="th" hreflang="th" data-title="ฮับอีเทอร์เน็ต" data-language-autonym="ไทย" data-language-local-name="泰语" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Ethernet_hub" title="Ethernet hub – 土耳其语" lang="tr" hreflang="tr" data-title="Ethernet hub" data-language-autonym="Türkçe" data-language-local-name="土耳其语" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9A%D0%BE%D0%BD%D1%86%D0%B5%D0%BD%D1%82%D1%80%D0%B0%D1%82%D0%BE%D1%80" title="Концентратор – 乌克兰语" lang="uk" hreflang="uk" data-title="Концентратор" data-language-autonym="Українська" data-language-local-name="乌克兰语" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/HUB" title="HUB – 乌兹别克语" lang="uz" hreflang="uz" data-title="HUB" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="乌兹别克语" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E9%9B%86%E7%BA%BF%E5%99%A8" title="集线器 – 吴语" lang="wuu" hreflang="wuu" data-title="集线器" data-language-autonym="吴语" data-language-local-name="吴语" class="interlanguage-link-target"><span>吴语</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q128003#sitelinks-wikipedia" 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class="mw-content-ltr mw-parser-output" lang="zh" dir="ltr"><style data-mw-deduplicate="TemplateStyles:r85100532">.mw-parser-output .hatnote{font-size:small}.mw-parser-output div.hatnote{padding-left:2em;margin-bottom:0.8em;margin-top:0.8em}.mw-parser-output .hatnote-notice-img::after{content:"\202f \202f \202f \202f "}.mw-parser-output .hatnote-notice-img-small::after{content:"\202f \202f "}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}body.skin-minerva .mw-parser-output .hatnote-notice-img,body.skin-minerva .mw-parser-output .hatnote-notice-img-small{display:none}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable"><span class="noviewer hatnote-notice-img" typeof="mw:File"><a href="/wiki/Wikipedia:%E6%B6%88%E6%AD%A7%E4%B9%89" title="Wikipedia:消歧义"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fb/Confusion_grey.svg/24px-Confusion_grey.svg.png" decoding="async" width="24" height="18" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fb/Confusion_grey.svg/36px-Confusion_grey.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/fb/Confusion_grey.svg/48px-Confusion_grey.svg.png 2x" data-file-width="260" data-file-height="200" /></a></span><b>提示</b>：此条目页的主题不是<b><a href="/wiki/USB%E9%9B%86%E7%BA%BF%E5%99%A8" title="USB集线器">USB集线器</a></b>。</div> <div id="noteTA-f3e2a619" class="noteTA"><div class="noteTA-group"><div data-noteta-group-source="module" data-noteta-group="IT"></div></div></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:4_port_netgear_ethernet_hub.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d9/4_port_netgear_ethernet_hub.jpg/300px-4_port_netgear_ethernet_hub.jpg" decoding="async" width="300" height="198" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d9/4_port_netgear_ethernet_hub.jpg/450px-4_port_netgear_ethernet_hub.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/d/d9/4_port_netgear_ethernet_hub.jpg 2x" data-file-width="496" data-file-height="328" /></a><figcaption>4口以太网集线器</figcaption></figure> <p><b>集線器</b>（Ethernet hub）是指將多條<a href="/wiki/%E4%BB%A5%E5%A4%AA%E7%BD%91" title="以太网">以太网</a>雙絞線或光纖集合連接在同一段物理介质下的裝置。集線器是運作在<a href="/wiki/OSI%E6%A8%A1%E5%9E%8B" title="OSI模型">OSI模型</a>中的<a href="/wiki/%E5%AF%A6%E9%AB%94%E5%B1%A4" class="mw-redirect" title="實體層">實體層</a><sup id="cite_ref-networkingtext_1-0" class="reference"><a href="#cite_note-networkingtext-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>，可以让其连结的设备工作在同一<a href="/wiki/%E7%BD%91%E6%AE%B5" title="网段">网段</a>。集线器上有多个I/O端口，信号从任意一个端口进入后，会从其他端口出现。<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>中继器（<span lang="en">Repeater hub</span>）也会参与冲突检测（<span lang="en">collision detection</span>），在检测到冲突时向所有端口转发<a href="/wiki/%E8%BD%BD%E6%B3%A2%E4%BE%A6%E5%90%AC%E5%A4%9A%E8%B7%AF%E8%AE%BF%E9%97%AE#载波侦听多路访问／碰撞检测（CSMA/CD）" title="载波侦听多路访问">拥塞信号</a>。除了标准的<a href="/wiki/8P8C" title="8P8C">8P8C</a>（“RJ45”）水晶头，一些集线器也支持<a href="/wiki/BNC%E8%BF%9E%E6%8E%A5%E5%99%A8" title="BNC连接器">BNC</a>或AUI（<span class="ilh-all" data-orig-title="Attachment Unit Interface" data-lang-code="en" data-lang-name="英语" data-foreign-title="Attachment Unit Interface"><span class="ilh-page"><a href="/w/index.php?title=Attachment_Unit_Interface&action=edit&redlink=1" class="new" title="Attachment Unit Interface（页面不存在）">附加单元接口</a></span><span class="noprint ilh-comment">（<span class="ilh-lang">英语</span><span class="ilh-colon">：</span><span class="ilh-link"><a href="https://en.wikipedia.org/wiki/Attachment_Unit_Interface" class="extiw" title="en:Attachment Unit Interface"><span lang="en" dir="auto">Attachment Unit Interface</span></a></span>）</span></span>）來連接傳統10BASE2或10BASE5網路。 <sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p><p>由於集線器會把收到的任何數位訊號，經過再生或放大，再從集線器的所有埠送出，這會造成訊號之間碰撞的機會很大，而且訊號也可能被竊聽，並且這代表所有連到集線器的裝置，都是屬於同一個碰撞網域以及廣播網域，因此大部份集線器已被<a href="/wiki/%E7%B6%B2%E8%B7%AF%E4%BA%A4%E6%8F%9B%E5%99%A8" title="網路交換器">交换机</a>取代。 </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="技术信息"><span id=".E6.8A.80.E6.9C.AF.E4.BF.A1.E6.81.AF"></span>技术信息</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E9%9B%86%E7%B7%9A%E5%99%A8&action=edit&section=1" title="编辑章节：技术信息"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading4"><h4 id="物理层功能"><span id=".E7.89.A9.E7.90.86.E5.B1.82.E5.8A.9F.E8.83.BD"></span>物理层功能</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E9%9B%86%E7%B7%9A%E5%99%A8&action=edit&section=2" title="编辑章节：物理层功能"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>集线器相比于<a href="/wiki/%E7%BD%91%E7%BB%9C%E4%BA%A4%E6%8D%A2%E6%9C%BA" class="mw-redirect" title="网络交换机">交换机</a>更为简单，它可以被视作有多个端口的中继器，从一个端口接受比特位（或<a href="/wiki/%E6%B3%A2%E7%89%B9%E7%8E%87" title="波特率">符号</a>），再从其他端口送出<sup id="cite_ref-networking_6-0" class="reference"><a href="#cite_note-networking-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup>。它对物理层数据包有所感知，可以检测到其开始、挂起及冲突。在检测到冲突时会发送拥塞信号以传播这一事件。集线器不能对经过它的网络流量做更进一步地检查与管理：任何进入的数据包都会被广播到其他端口。集线器/中继器无法储存数据——数据包必须在接收时被发送，一旦发生冲突，就会丢包（发送端应当能够侦测到，并重新发送）。基于此，集线器只能以<a href="/wiki/%E5%8D%8A%E9%9B%99%E5%B7%A5" class="mw-redirect" title="半雙工">半雙工</a>模式工作。因此，由于<span class="ilh-all" data-orig-title="collision domain" data-lang-code="en" data-lang-name="英语" data-foreign-title="collision domain"><span class="ilh-page"><a href="/w/index.php?title=Collision_domain&action=edit&redlink=1" class="new" title="Collision domain（页面不存在）">冲突域</a></span><span class="noprint ilh-comment">（<span class="ilh-lang">英语</span><span class="ilh-colon">：</span><span class="ilh-link"><a href="https://en.wikipedia.org/wiki/collision_domain" class="extiw" title="en:collision domain"><span lang="en" dir="auto">collision domain</span></a></span>）</span></span>更广，相比于使用更复杂的网络设备，使用集线器的数据网络更容易出现数据包冲突。 <sup id="cite_ref-networkingtext_1-1" class="reference"><a href="#cite_note-networkingtext-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="集線器的種類"><span id=".E9.9B.86.E7.B7.9A.E5.99.A8.E7.9A.84.E7.A8.AE.E9.A1.9E"></span>集線器的種類</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E9%9B%86%E7%B7%9A%E5%99%A8&action=edit&section=3" title="编辑章节：集線器的種類"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>被動型集線器（Passive Hub），集線器不需連接電源，因此網路訊號隨距離衰減，只適用於短距離的網路連接。</li> <li>主動型集線器（Active Hub），集線器需連接電源，可加強訊號強度（整波放大）。</li> <li>除此之外，有的集線器可能具有Up Link的插孔，可串接成樹狀區域網路。</li></ul> <div class="mw-heading mw-heading2"><h2 id="参见"><span id=".E5.8F.82.E8.A7.81"></span>参见</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E9%9B%86%E7%B7%9A%E5%99%A8&action=edit&section=4" title="编辑章节：参见"><span>编辑</span></a><span 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Network+ Guide to Networks. Delmar. 2010: 256–257.</cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fzh.wikipedia.org%3A%E9%9B%86%E7%B7%9A%E5%99%A8&rft.aufirst=Tamara&rft.aulast=Dean&rft.btitle=Network%2B+Guide+to+Networks&rft.date=2010&rft.genre=book&rft.pages=256-257&rft.pub=Delmar&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text">IEEE 802.3-2012 Clause 9.1</span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text">IEEE 802.3 <i>9. Repeater unit for 10 Mb/s baseband networks</i></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text">IEEE 802.3 <i>27. Repeater unit for 100 Mb/s baseband networks</i></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text">IEEE 802.3 <i>41. Repeater unit for 1000 Mb/s baseband networks</i></span> </li> <li id="cite_note-networking-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-networking_6-0">^</a></b></span> <span class="reference-text"><cite class="citation book">Hallberg, Bruce. <a rel="nofollow" class="external text" href="https://archive.org/details/networkingbeginn00hall_156">Networking: A Beginner's Guide, Fifth Edition</a>. McGraw Hill. 2010: <a rel="nofollow" class="external text" href="https://archive.org/details/networkingbeginn00hall_156/page/n86">68</a>–69.</cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fzh.wikipedia.org%3A%E9%9B%86%E7%B7%9A%E5%99%A8&rft.aufirst=Bruce&rft.aulast=Hallberg&rft.btitle=Networking%3A+A+Beginner%27s+Guide%2C+Fifth+Edition&rft.date=2010&rft.genre=book&rft.pages=68-69&rft.pub=McGraw+Hill&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fnetworkingbeginn00hall_156&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook" class="Z3988"><span style="display:none;"> </span></span></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="外部链接"><span id=".E5.A4.96.E9.83.A8.E9.93.BE.E6.8E.A5"></span>外部链接</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E9%9B%86%E7%B7%9A%E5%99%A8&action=edit&section=6" title="编辑章节：外部链接"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a 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