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clearfix"><h1>蘇州礦用以太網(wǎng)交換機品牌串口轉(zhuǎn)以太煙臺市正維通信技術(shù)供應(yīng)</h1><div id="8220kyg" class="proBig"><div id="ouk24k0" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637475981864698422/2354377.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="gk2yc20" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637475981864698422/2354377.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="20o2yes" 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>蘇州礦用以太網(wǎng)交換機品牌,以太網(wǎng)交換機</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="ayg0ksa" 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: </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="y4e0y2w" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="mkqgc4e" class="box"><p><p style="text-indent:25px">智能型工業(yè)以太網(wǎng)交換機支持通過RS232標(biāo)準(zhǔn)串行接口進行維護。維護時用專門用的維護電纜連接PC機串行口和WISE的維護串口，在PC機上運行超級終端應(yīng)用程序即可進入交換機設(shè)置界面進行維護。PC機連接設(shè)置和管理維護界面參見電子文檔《WISE系列網(wǎng)管系統(tǒng)用戶使用手冊》。目前正維通信的用戶已遍布電力、煤礦、軌道交通，蘇州礦用以太網(wǎng)交換機品牌、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，蘇州礦用以太網(wǎng)交換機品牌，蘇州礦用以太網(wǎng)交換機品牌、自治區(qū)的銷售機構(gòu)和數(shù)十個重點合作伙伴，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)。以太網(wǎng)交換機的電口具有帶寬自適應(yīng)功能。蘇州礦用以太網(wǎng)交換機品牌</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州礦用以太網(wǎng)交換機品牌,以太網(wǎng)交換機" src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637475981864698422/2354377.png"></div><p style="text-indent:25px">以太網(wǎng)交換機在網(wǎng)絡(luò)應(yīng)用中，尤其是多媒體應(yīng)用中，經(jīng)常會涉及點到多點通信的問題，組播技術(shù)是實現(xiàn)點到多點通信的常用方式，傳統(tǒng)的點到多點通信方式，不只是浪費帶寬、也容易產(chǎn)生延遲和擁塞，甚至?xí)a(chǎn)生一些無用的廣播報文，對系統(tǒng)性能帶來負(fù)面影響。組播技術(shù)中發(fā)送者只需要發(fā)送一次報文，路由器和交換機就會自動把報文復(fù)制給每一個真正想要接收報文的終端。通過這種方式有效解決了點到多點的傳送問題，需要注意的是網(wǎng)絡(luò)層組播的實現(xiàn)較為復(fù)雜，需要對第三層和第二層的組播功能進行詳細(xì)的分析，這其中會應(yīng)用到網(wǎng)絡(luò)拓?fù)浼夹g(shù)和GMRP技術(shù)。陜西千兆以太網(wǎng)交換機品牌以太網(wǎng)交換機供電多為DC24或AC220。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州礦用以太網(wǎng)交換機品牌,以太網(wǎng)交換機" src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637475981617813524/9347702.png"></div><p style="text-indent:25px">WISE9000B網(wǎng)管型多光口系列產(chǎn)品是煙臺市正維通信技術(shù)有限公司的一款網(wǎng)管冗余工業(yè)以太網(wǎng)交換機，可以在嚴(yán)酷的工業(yè)電磁環(huán)境下工作，適用于工業(yè)以太網(wǎng)設(shè)備通過光纖進行遠(yuǎn)距離及抗電磁干擾通訊，適合在中國不同地域溫度環(huán)境中使用，為工業(yè)控制系統(tǒng)聯(lián)網(wǎng)提供了方便、可靠的途徑。其中8、12或16個10/100M自適應(yīng)以太網(wǎng)電與用戶機（計算機、交換機、集線器、服務(wù)器等）相連，8、12或16個百兆光口（1*9光模塊，單模、多?？啥ㄖ疲饪趯⒕W(wǎng)絡(luò)傳輸距離的極限從雙絞線的100米擴展到了100公里以上，它可以簡單地實現(xiàn)多臺主板服務(wù)器、中繼器、集線器、終端機與多臺終端機之間的互聯(lián)。同時該設(shè)備還支持多種網(wǎng)絡(luò)管理功能，如VLAN,QOS功能，端口匯聚，端口鏡像等。</p><p style="text-indent:25px">工業(yè)以太網(wǎng)交換機主要是應(yīng)用于工業(yè)控制自動化環(huán)境中的實時以太網(wǎng)數(shù)據(jù)傳輸。工業(yè)以太網(wǎng)交換機是數(shù)據(jù)鏈路層的機器，以太網(wǎng)使用物理地址(MAC地址)，48位，6字節(jié)。其工作原理為：當(dāng)接受到一個廣播幀時，他會向除接受端口之外的所有端口轉(zhuǎn)發(fā)。當(dāng)接受到一個單播幀時，檢查其目的地址并對應(yīng)自己的MAC地址表，如果存在目的地址，則轉(zhuǎn)發(fā)，如果不存在則泛洪(廣播)，廣播后如果沒有主機的MAC地址與幀的目的MAC地址相同，則丟棄，若有主機相同，則會將主機的MAC自動添加到其MAC地址表中。5口，8口，16口，28口以太網(wǎng)交換機。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州礦用以太網(wǎng)交換機品牌,以太網(wǎng)交換機" src="https://tyunfile.71360.com/WaterMark/UploadFile/zhengwei123/637475981704786061/7711785.png"></div><p style="text-indent:25px">借助VLAN技術(shù)可以有效避免廣播數(shù)據(jù)的惡意攻擊，造成廣播數(shù)據(jù)惡意攻擊的主要原因是以太網(wǎng)交換機的沖擊域和廣播域不一致，在這樣的情況下，可以利用VLAN技術(shù)也就是局域網(wǎng)技術(shù)，通過限制廣播域范圍的方式解決這一問題。局域網(wǎng)技術(shù)可以有效分離通信量，讓帶寬得到更好的利用，并且從邏輯角度出發(fā)，將實際的LAN基礎(chǔ)設(shè)施分割成多個子網(wǎng)。局域網(wǎng)技術(shù)在實際應(yīng)用不只是可以解決廣播惡意攻擊問題，還有效增強了網(wǎng)絡(luò)安全性，不只是如此，VLAN技術(shù)的使用可以有效降低的移動和變更成本，在物理劃分子網(wǎng)的情況下，快速的完成用戶變更，所需要的時間較短。但是VLAN技術(shù)在實際使用中也存在一定的問題，比如：接口問題，標(biāo)簽引入問題SNMP(簡單網(wǎng)管協(xié)議) 允許網(wǎng)管應(yīng)用程序以標(biāo)準(zhǔn)方式和以太網(wǎng)交換機通信,請求狀態(tài)信息及設(shè)置配置等。徐州電力以太網(wǎng)交換機品牌</p><p style="text-indent:25px">以太網(wǎng)交換機通常都有幾個到幾十個端口，實質(zhì)上就是一個多端口的網(wǎng)橋。蘇州礦用以太網(wǎng)交換機品牌</p><p style="text-indent:25px">工業(yè)以太網(wǎng)交換機本身與商業(yè)以太網(wǎng)交換機在數(shù)據(jù)鏈路層、網(wǎng)絡(luò)層、協(xié)議層等方面并無本質(zhì)區(qū)別，但針對工業(yè)控制的實時性等需求，工業(yè)以太網(wǎng)解決了通信實時性、網(wǎng)絡(luò)安全性、本質(zhì)安全與安全防爆技術(shù)等技術(shù)問題，并且采用一些適合于工業(yè)環(huán)境的措施，如防水，抗振動...其重點還是和商用以太網(wǎng)沒有本質(zhì)的區(qū)別，這就和PC機與工控機之間的區(qū)別一樣工業(yè)以太網(wǎng)交換機專門為滿足靈活多變的工業(yè)應(yīng)用需求而設(shè)計，提供一種高性價比工業(yè)以太網(wǎng)通訊解決方案。而其組網(wǎng)方式則更重點關(guān)注于環(huán)路設(shè)計。環(huán)路有單環(huán)和多環(huán)的區(qū)別，同時亦有在STP和RSTP基礎(chǔ)上，各個廠家設(shè)計的私有環(huán)路協(xié)議，如正維通信WISE環(huán)等蘇州礦用以太網(wǎng)交換機品牌</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)團隊。專業(yè)的團隊大多數(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，以太網(wǎng)交換機，環(huán)網(wǎng)交換機，光纖收發(fā)器。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3131393.html</p></div></div></div></div></div><div id="chtdask" class="page-right twoColRt"><div id="vfcz3yg" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="jtqnfmj" 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配件哪家強信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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