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clearfix"><div id="m3rlb32" class="twoCol"><div id="vtqnut3" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_txcp/">通信產(chǎn)品</a>?<a href="http://www.cdcfah.com/cp/second-txcp_csjhsb/">傳輸、交換設(shè)備</a>?<a href="http://www.cdcfah.com/cp/third-csjhsb_wljhj/">網(wǎng)絡(luò)交換機(jī)</a>?江西光纖以太網(wǎng)交換機(jī)直銷串口轉(zhuǎn)以太煙臺市正維通信技術(shù)供應(yīng)</p><div id="j3oqxud" class="leftbox clearfix"><h1>江西光纖以太網(wǎng)交換機(jī)直銷串口轉(zhuǎn)以太煙臺市正維通信技術(shù)供應(yīng)</h1><div id="ysur884" class="proBig"><div id="drjgyfh" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637475981772041869/3519507.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="hwtaxoq" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637475981772041869/3519507.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="u8zgnzl" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>山東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>江西光纖以太網(wǎng)交換機(jī)直銷,以太網(wǎng)交換機(jī)</p><p><span>***更新：</span>2021-02-03 01:19:52</p><p><span id="click" >瀏覽次數(shù)：4次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="au7uv2a" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">煙臺市正維通信技術(shù)有限公司</a></p><p><span>聯(lián)系人：</span>程雷</p><p><span>郵箱: </span>zhengwei@zhengwei-teah.cn</p><p><span>電話: </span>18766381696</p><p><span>傳真: </span>0535_</p><p><span>網(wǎng)址: </span>http://www.zwkj.net.cn</p><p><span>手機(jī): </span>0535-3975176</p><p><span>地址: </span>中國(山東)自由貿(mào)易試驗區(qū)煙臺片區(qū)煙臺開發(fā)區(qū)珠江路42號</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="auwovx2" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="ic73g2b" class="box"><p><p style="text-indent:25px">以太網(wǎng)交換機(jī)作為一種數(shù)據(jù)傳輸設(shè)備，是局域網(wǎng)中重要的設(shè)備之一，內(nèi)部結(jié)構(gòu)端口均為同主機(jī)連接，可以在連接多個端口的同時，實現(xiàn)數(shù)據(jù)傳輸，也不會產(chǎn)生沖擊。除此之外，以太網(wǎng)交換機(jī)成本較低，可以滿足不同層次的實際需求，在大數(shù)據(jù)時代背景下，以太網(wǎng)交換機(jī)技術(shù)不斷發(fā)展，擴(kuò)展形成了很多復(fù)雜的業(yè)務(wù)。在這個過程中，以太網(wǎng)交換機(jī)也面臨著較為嚴(yán)重的安全問題，主要包括以下幾個方面：頭一，廣播惡意攻擊；第二，網(wǎng)絡(luò)攻擊；第三，MAC地址攻擊；第四，MAC惡意欺騙；第五，環(huán)路攻擊。以廣播惡意攻擊為例，網(wǎng)絡(luò)是一個開放的平臺，交換機(jī)在接受大流量廣播數(shù)據(jù)時，江西光纖以太網(wǎng)交換機(jī)直銷，江西光纖以太網(wǎng)交換機(jī)直銷，江西光纖以太網(wǎng)交換機(jī)直銷，就會通過廣播的形式轉(zhuǎn)發(fā)這些數(shù)據(jù)，如果數(shù)據(jù)的傳輸控制功能不夠完善，那么網(wǎng)絡(luò)寬帶就會被這些垃圾數(shù)據(jù)充滿，交換機(jī)需要具備面對眾多數(shù)據(jù)的傳輸控制功能。交換機(jī)上用于鏈接計算機(jī)或其他設(shè)備的插口稱作端口。江西光纖以太網(wǎng)交換機(jī)直銷</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江西光纖以太網(wǎng)交換機(jī)直銷,以太網(wǎng)交換機(jī)" src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637475981772041869/3519507.png"></div><p style="text-indent:25px">三層交換機(jī)命名由來：三層交換機(jī)可以工作在OSI七層模型中的第二層數(shù)據(jù)兩路層和第三層傳輸層，具有路由功能。二層交換機(jī)：只工作在數(shù)據(jù)鏈路層，沒有路由功能。網(wǎng)管型交換機(jī)：可以通過Console，telnet, We，SNMP來配置，公司產(chǎn)品只支持SNMP V2。環(huán)網(wǎng)冗余：組成冗余鏈路，保證網(wǎng)絡(luò)在遇到故障時，通訊快速恢復(fù)（20ms）通過生成樹STP和快速生成樹RSTP來消除環(huán)網(wǎng)廣播風(fēng)暴。多模光纖傳輸距離2km 單模光纖傳輸距離0-20km ； 40km； 80km。電口具有帶寬自適應(yīng)功能十兆-百兆-千兆。光口不具有自適應(yīng)功能，可分為SP熱插拔，1*9光機(jī)件（焊在板子上）。光口的物理形式主要看用戶的光纖是多模單模。江西光纖以太網(wǎng)交換機(jī)直銷以太網(wǎng)交換機(jī)的多模光纖傳輸距離2km。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江西光纖以太網(wǎng)交換機(jī)直銷,以太網(wǎng)交換機(jī)" src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637475982408370070/6838530.png"></div><p style="text-indent:25px">交換機(jī)上用于鏈接計算機(jī)或其他設(shè)備的插口稱作端口。計算機(jī)借助網(wǎng)卡通過網(wǎng)線連接到交換機(jī)的端口上。網(wǎng)卡、交換機(jī)和路由器的每個端口都具有一個MAC地址，由設(shè)備生產(chǎn)廠商固化在設(shè)備的EPROM中。MAC由IEEE負(fù)責(zé)分配，每個MAC地址都是D單獨的。MAC地址是長度為48位的二進(jìn)制，前24位由設(shè)備生產(chǎn)廠商標(biāo)識符，后24位由生產(chǎn)廠商自行分配的序列號。以太網(wǎng)交換機(jī)是指傳輸帶寬在100Mbps以下的交換機(jī)，下面我們還會要講到一種"快速以太網(wǎng)交換機(jī)"、"千兆以太網(wǎng)交換機(jī)"和"萬兆以太網(wǎng)交換機(jī)"其實也是以太網(wǎng)交換機(jī)，只不過它們所采用的協(xié)議標(biāo)準(zhǔn)、或者傳輸介質(zhì)不一樣，當(dāng)然其接口形式也可能不一樣。</p><p style="text-indent:25px">端口聚合 TRUNK是端口匯聚的意思，就是通過配置軟件的設(shè)置，將2個或多個物理端口組合在一起成為一條邏輯的路徑從而增加在交換機(jī)和網(wǎng)絡(luò)節(jié)點之間的帶寬，將屬于這幾個端口的帶寬合并，給端口提供一個幾倍于單獨端口的獨享的高帶寬。CSMA/CD(Carrier Sense Multiple Access/Collision Detection)，即載波多路訪問/沖擊檢測方法和CSMA/CA(Carrier Sense multiple Access/Collision Avoidance)，都是爭用型的介質(zhì)訪問控制協(xié)議，位于數(shù)據(jù)鏈路層，前者用于有線網(wǎng)絡(luò)而后者用于無線網(wǎng)絡(luò)。電口是服務(wù)器和網(wǎng)絡(luò)中對RJ45等各種雙絞線接口的統(tǒng)稱，主要指銅纜，包括普通的網(wǎng)線和射頻同軸電纜，是處理電信號的。例如高電平(表示1)，低電平(表示0)。以太網(wǎng)交換機(jī)選型需要確認(rèn)電口和光口的數(shù)量。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江西光纖以太網(wǎng)交換機(jī)直銷,以太網(wǎng)交換機(jī)" src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637475982324971591/9591594.png"></div><p style="text-indent:25px">IGMP Snooping( Internet Group Management Protocol Snooping互聯(lián)網(wǎng)組管理協(xié)議窺探)可自動將組播幀只發(fā)給那些請求這些幀的設(shè)備,這能防止組播幀發(fā)往那些未請求這些幀的設(shè)備；SNMP(Simple Network Management Protocol簡單網(wǎng)管協(xié)議) 允許網(wǎng)管應(yīng)用程序以標(biāo)準(zhǔn)方式和交換機(jī)通信,請求狀態(tài)信息及設(shè)置配置等；環(huán)網(wǎng)冗余此項技術(shù)不只是能夠保證網(wǎng)絡(luò)在遇到故障時，通訊快速恢復(fù)（例如西門子的Fast Redundancy Ring和Moxa的Turbo Ring,恢復(fù)時間少于300ms;赫斯曼的HIPER-Ring保守估計的大恢復(fù)時間是500ms;正維通信的zw-Ring,恢復(fù)時間不受節(jié)點數(shù)量的影響），還可以在環(huán)網(wǎng)鏈接斷開時通過出錯繼電器、指示燈或SNMP發(fā)出警報。以太網(wǎng)交換機(jī)組網(wǎng)方式有鏈?zhǔn)?，星型，環(huán)形，相切環(huán)形等。徐州電力以太網(wǎng)交換機(jī)品牌</p><p style="text-indent:25px">電力、煤礦、軌道交通、高速公路、鋼鐵冶金、石油化工、城市智能交通、水處理等都能用到工業(yè)以太網(wǎng)交換機(jī)。江西光纖以太網(wǎng)交換機(jī)直銷</p><p style="text-indent:25px">正維通信的1000系列交換機(jī)采用35mm標(biāo)準(zhǔn)DIN卡軌式安裝，在大多數(shù)工業(yè)應(yīng)用上非常方便，其安裝步驟如下：檢查是否具備DIN-rail導(dǎo)軌安裝工具配件（本產(chǎn)品已提供安裝配件）；檢查DIN導(dǎo)軌是否固定結(jié)實，是否有安裝本產(chǎn)品的合適位置；將產(chǎn)品配件的DIN卡軌連接座下部卡入DIN軌內(nèi)（下部帶彈簧支撐），然后將連接座的上部卡入DIN卡軌（下部卡入少許，稍微用力保持設(shè)備平衡卡入上部）。將DIN軌卡入DIN軌連接座后，檢查并確認(rèn)產(chǎn)品可靠地安裝到DIN軌上。如果在安裝過程中遇到其他問題，也可聯(lián)系正維通信售后解決。江西光纖以太網(wǎng)交換機(jī)直銷</p><p style="text-indent:25px">煙臺市正維通信技術(shù)有限公司位于中國(山東)自由貿(mào)易試驗區(qū)煙臺片區(qū)煙臺開發(fā)區(qū)珠江路42號，擁有一支專業(yè)的技術(shù)團(tuán)隊。專業(yè)的團(tuán)隊大多數(shù)員工都有多年工作經(jīng)驗，熟悉行業(yè)專業(yè)知識技能，致力于發(fā)展正維通信的品牌。公司以用心服務(wù)為重點價值，希望通過我們的專業(yè)水平和不懈努力，將目前正維通信的用戶已遍布電力、煤礦、軌道交通、高速公路、鋼鐵冶金、石油化工、城市智能交通、水處理等行業(yè)，正維通信通過覆蓋國內(nèi)30個省、市、自治區(qū)的銷售機(jī)構(gòu)和數(shù)十個重要的合作伙伴，使迅速響應(yīng)用戶需求成為現(xiàn)實，向客戶提供完善的售前支持和貼心的售后服務(wù)。等業(yè)務(wù)進(jìn)行到底。誠實、守信是對企業(yè)的經(jīng)營要求，也是我們做人的基本準(zhǔn)則。公司致力于打造***的工業(yè)交換機(jī)，以太網(wǎng)交換機(jī)，環(huán)網(wǎng)交換機(jī)，光纖收發(fā)器。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3131394.html</p></div></div></div></div></div><div id="eogip8m" class="page-right twoColRt"><div id="ds7gszg" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="mr8npry" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 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