廈門彬碩自動化 特價西門子 3TK 3UG 3RP 3RS 3RK 3TX 3RV 3RT 3RK 6GK 6EP 6SY 6RY 6DD 6SE70 6SB 6SL PILZ Balluff bender SQUARE-D TURCK IFM ITE-SIENEMS Schneider繼電器 胡凡禹 《誠信服務(wù)》《質(zhì)量保證》《優(yōu)質(zhì)售后》《服務(wù)至上》 廈門彬碩,打破低價只為長期合作,沒有彬碩給不了的價格。 廈門彬碩,貨期質(zhì)量我們給您承諾,全新原裝盡在廈門彬碩。 廈門彬碩,優(yōu)質(zhì)售后彬碩為您負(fù)責(zé),質(zhì)量保證請您*彬碩。 德國西門子交換機意為“開關(guān)”是一種用于電(光)信號轉(zhuǎn)發(fā)的網(wǎng)絡(luò)設(shè)備。它可以為接入交換機的任意兩個網(wǎng)絡(luò)節(jié)點提供*享的電信號通路。較常見的交換機是以太網(wǎng)交換機。其他常見的還有電話語音交換機、光纖交換機等。 交換機工作于OSI參考模型的*二層,即數(shù)據(jù)鏈路層。交換機內(nèi)部的CPU會在每個端口成功連接時,通過將MAC地址和端口對應(yīng),形成一張MAC表。在今后的通訊中,發(fā)往該MAC地址的數(shù)據(jù)包將僅送往其對應(yīng)的端口,而不是所有的端口。因此,交換機可用于劃分?jǐn)?shù)據(jù)鏈路層廣播,即沖突域;但它不能劃分網(wǎng)絡(luò)層廣播,即廣播域。[1] 交換機擁有一條很高帶寬的背部總線和內(nèi)部交換矩陣。交換機的所有的端口都掛接在這條背部總線上,控制電路收到數(shù)據(jù)包以后,處理端口會查找內(nèi)存中的地址對照表以確定目的MAC(網(wǎng)卡的硬件地址)的NIC(網(wǎng)卡)掛接在哪個端口上,通過內(nèi)部交換矩陣迅速將數(shù)據(jù)包傳送到目的端口,目的MAC若不存在,廣播到所有的端口,接收端口回應(yīng)后交換機會“學(xué)習(xí)”新的MAC地址,并把它添加入內(nèi)部MAC地址表中。使用交換機也可以把網(wǎng)絡(luò)“分段”,通過對照IP地址表,交換機只允許必要的網(wǎng)絡(luò)流量通過交換機。通過交換機的過濾和轉(zhuǎn)發(fā),可以有效的減少沖突域,但它不能劃分網(wǎng)絡(luò)層廣播,即廣播域。 6GK5328-4SS00-2AR3 6GK5328-4SS00-3AR3 6GK5400-8AS00-8AP2 6GK5408-4GQ00-2AM2 6GK5408-8GR00-2AM2 6GK5408-8GS00-2AM2 6GK5416-4GR00-2AM2 6GK5416-4GS00-2AM2 6GK5524-8GR00-2AR2 6GK5524-8GR00-3AR2 6GK5524-8GR00-4AR2 6GK5524-8GS00-2AR2 6GK5526-8GR00-2AR2 6GK5526-8GR00-3AR2 6GK5526-8GR00-4AR2 6GK5526-8GS00-2AR2 6GK5526-8GS00-3AR2 6GK5526-8GS00-4AR2 6GK5528-0AA00-2AR2 6GK5528-0AA00-2HR2 6GK5528-0AR00-2AR2 6GK5528-0AR00-2HR2 6GK5552-0AA00-2AR2 6GK5552-0AA00-2HR2 6GK5552-0AR00-2AR2 6GK5552-0AR00-2HR2 6GK5597-1AA00-8AA0 6GK5597-2AA00-8AA0 6GK5598-1AA00-3AA0 6GK5615-0AA00-2AA2 6GK5623-0BA10-2AA3 6GK5627-2BA10-2AA3 6GK5712-0XC00-1AA0 6GK5712-0XC00-1AB0 6GK5712-0XC00-1AD0 6GK5721-1FC00-0AA0 6GK5721-1FC00-0AB0 6GK5722-1FC00-0AA0 6GK5722-1FC00-0AB0 6GK5722-1FC00-0AC0 6GK5734-1FX00-0AA0 6GK5734-1FX00-0AA6 6GK5734-1FX00-0AB0 6GK5734-1FX00-0AB6 6GK5738-1GY00-0AA0 6GK5738-1GY00-0AB0 6GK5748-1FC00-0AA0 6GK5748-1FC00-0AB0 6GK5750-2HX01-1AA0 6GK5750-2HX01-1AB0 6GK5750-2HX01-1AD0 6GK5761-1FC00-0AA0 6GK5761-1FC00-0AB0 6GK5774-1FX00-0AA0 6GK5774-1FX00-0AB0 6GK5774-1FX00-0AC0 6GK5774-1FY00-0TA0 6GK5774-1FY00-0TB0 6GK5778-1GY00-0AA0 6GK5786-1FC00-0AA0 6GK5786-1FC00-0AB0 6GK5786-2FC00-0AA0 6GK5786-2FC00-0AB0 6GK5786-2FC00-0AC0 6GK5786-2FC00-1AA0 6GK5786-2FC00-1CA0 6GK5786-2FE00-0AA0 6GK5786-2FE00-0AB0 6GK5786-2FE00-1AA0 6GK5786-2FE00-1CA0 6GK5786-2HC00-0AA0 6GK5786-2HC00-0AB0 6GK5786-2HC00-1AA0 6GK5786-2HC00-1CA0 6GK5788-1FC00-0AA0 6GK5788-1FC00-0AB0 6GK5788-1GD00-0AA0 6GK5788-1GD00-0AB0 6GK5788-2FC00-0AA0 6GK5788-2FC00-0AB0 6GK5788-2FC00-0AC0 6GK5788-2FC00-1AA0 6GK5788-2GD00-0AA0 6GK5788-2GD00-0AB0 6GK5788-2GD00-0TA0 6GK5788-2GD00-0TB0 6GK5788-2GD00-1AA0 6GK5788-2GD00-1TA0 6GK5791-1PS00-0AA6 6GK5791-2AC00-0AA0 6GK5791-2DC00-0AA0 6GK5792-4DN00-0AA6 6GK5792-6MN00-0AA6 6GK5793-6DG00-0AA0 6GK5793-6DT00-0AA0 6GK5793-6MN00-0AA6 6GK5793-8DJ00-0AA0 6GK5793-8DK00-0AA0 6GK5793-8DL00-0AA0 6GK5793-8DP00-0AA0 6GK5795-1TN00-1AA0 6GK5795-1TR10-0AA6 6GK5795-4MA00-0AA3 6GK5795-4MB00-0AA0 6GK5795-4MB00-0AM0 6GK5795-4MC00-0AA3 6GK5795-4MD00-0AA3 6GK5795-4MX00-0AA0 6GK5795-6DC00-0AA0 6GK5795-6MN01-0AA6 6GK5795-6MN10-0AA6 6GK5795-6MP00-0AA0 6GK5795-6MT00-0AA0 6GK5798-0AP00-4CA0 6GK5798-0CN00-0AA0
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供應(yīng)德國交換機6GK5104-2BB00-2AA3
廈門彬碩自動化 特價西門子 3TK 3UG 3RP 3RS 3RK 3TX 3RV 3RT 3RK 6GK 6EP 6SY 6RY 6DD 6SE70 6SB 6SL PILZ Balluff bender SQUARE-D TURCK IFM ITE-SIENEMS Schneider繼電器 胡凡禹 《誠信服務(wù)》《質(zhì)量保證》《優(yōu)質(zhì)售后》《服務(wù)至上》 廈門彬碩,打破低價只為長期合作,沒有彬碩給不了
供應(yīng)德國交換機 西門子6GK5874-3AA00-2AA2
德國西門子交換機意為“開關(guān)”是一種用于電(光)信號轉(zhuǎn)發(fā)的網(wǎng)絡(luò)設(shè)備。它可以為接入交換機的任意兩個網(wǎng)絡(luò)節(jié)點提供*享的電信號通路。較常見的交換機是以太網(wǎng)交換機。其他常見的還有電話語音交換機、光纖交換機等。 交換機工作于OSI參考模型的*二層,即數(shù)據(jù)鏈路層。交換機內(nèi)部的CPU會在每個端口成功連接時,通過將MAC地址和端口對應(yīng),形成一張MAC表。在今后的通訊中,發(fā)往該MAC地址的數(shù)據(jù)包將僅送往其對應(yīng)的端口,
公司名: 廈門彬碩自動化科技有限公司
聯(lián)系人: 小胡
電 話: 0592-5588308
手 機: 18900224342
微 信: 18900224342
地 址: 福建廈門湖里區(qū)湖里區(qū)嘉禾路545號302室
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網(wǎng) 址: xmbinshuo.cn.b2b168.com
公司名: 廈門彬碩自動化科技有限公司
聯(lián)系人: 小胡
手 機: 18900224342
電 話: 0592-5588308
地 址: 福建廈門湖里區(qū)湖里區(qū)嘉禾路545號302室
郵 編: 361000
網(wǎng) 址: xmbinshuo.cn.b2b168.com