供應(yīng)德國(guó)交換機(jī)6GK5104-2BB00-2AA3

時(shí)間：2020-01-05作者：廈門(mén)彬碩自動(dòng)化科技有限公司瀏覽：236

廈門(mén)彬碩自動(dòng)化  特價(jià)西門(mén)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(chéng)信服務(wù)》《質(zhì)量保證》《優(yōu)質(zhì)售后》《服務(wù)至上》

廈門(mén)彬碩，打破低價(jià)只為長(zhǎng)期合作，沒(méi)有彬碩給不了的價(jià)格。

廈門(mén)彬碩，貨期質(zhì)量我們給您承諾，全新原裝盡在廈門(mén)彬碩。

廈門(mén)彬碩，優(yōu)質(zhì)售后彬碩為您負(fù)責(zé)，質(zhì)量保證請(qǐng)您*彬碩。

德國(guó)西門(mén)子交換機(jī)意為“開(kāi)關(guān)”是一種用于電（光）信號(hào)轉(zhuǎn)發(fā)的網(wǎng)絡(luò)設(shè)備。它可以為接入交換機(jī)的任意兩個(gè)網(wǎng)絡(luò)節(jié)點(diǎn)提供*享的電信號(hào)通路。較常見(jiàn)的交換機(jī)是以太網(wǎng)交換機(jī)。其他常見(jiàn)的還有電話語(yǔ)音交換機(jī)、光纖交換機(jī)等。
交換機(jī)工作于OSI參考模型的*二層，即數(shù)據(jù)鏈路層。交換機(jī)內(nèi)部的CPU會(huì)在每個(gè)端口成功連接時(shí)，通過(guò)將MAC地址和端口對(duì)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(duì)應(yīng)的端口，而不是所有的端口。因此，交換機(jī)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(jī)擁有一條很高帶寬的背部總線和內(nèi)部交換矩陣。交換機(jī)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(huì)查找內(nèi)存中的地址對(duì)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(gè)端口上，通過(guò)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(jī)會(huì)“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(jī)也可以把網(wǎng)絡(luò)“分段”，通過(guò)對(duì)照IP地址表，交換機(jī)只允許必要的網(wǎng)絡(luò)流量通過(guò)交換機(jī)。通過(guò)交換機(jī)的過(guò)濾和轉(zhuǎn)發(fā)，可以有效的減少?zèng)_突域，但它不能劃分網(wǎng)絡(luò)層廣播，即廣播域。
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廈門(mén)彬碩自動(dòng)化科技有限公司專(zhuān)注于西門(mén)子,圖爾克,施耐德,皮爾茲等等

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• 供應(yīng)德國(guó)交換機(jī)6GK5104-2BB00-2AA3

  廈門(mén)彬碩自動(dòng)化 特價(jià)西門(mén)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(chéng)信服務(wù)》《質(zhì)量保證》《優(yōu)質(zhì)售后》《服務(wù)至上》 廈門(mén)彬碩，打破低價(jià)只為長(zhǎng)期合作，沒(méi)有彬碩給不了

• 供應(yīng)德國(guó)交換機(jī) 西門(mén)子6GK5874-3AA00-2AA2

  德國(guó)西門(mén)子交換機(jī)意為“開(kāi)關(guān)”是一種用于電（光）信號(hào)轉(zhuǎn)發(fā)的網(wǎng)絡(luò)設(shè)備。它可以為接入交換機(jī)的任意兩個(gè)網(wǎng)絡(luò)節(jié)點(diǎn)提供*享的電信號(hào)通路。較常見(jiàn)的交換機(jī)是以太網(wǎng)交換機(jī)。其他常見(jiàn)的還有電話語(yǔ)音交換機(jī)、光纖交換機(jī)等。 交換機(jī)工作于OSI參考模型的*二層，即數(shù)據(jù)鏈路層。交換機(jī)內(nèi)部的CPU會(huì)在每個(gè)端口成功連接時(shí)，通過(guò)將MAC地址和端口對(duì)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(duì)應(yīng)的端口，