原裝德國(guó)赫斯曼HIRSCHMANN交換機(jī)型號(hào)價(jià)格
RS20-0400M2T1SDAEHC (3×RJ45 1×SC,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管增強(qiáng)型)
RS20-0400M2T1SDAPHC (3×RJ45 1×SC,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管專業(yè)版)
原裝德國(guó)赫斯曼HIRSCHMANN交換機(jī)型號(hào)價(jià)格,赫斯曼HIRSCHMANN交換機(jī)工作在數(shù)據(jù)鏈路層。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。赫斯曼交換機(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,通過對(duì)照MAC地址表,交換機(jī)只允許必要的網(wǎng)絡(luò)流量通過交換機(jī)。通過交換機(jī)的過濾和轉(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。交換機(jī)在同一時(shí)刻可進(jìn)行多個(gè)端口對(duì)之間的數(shù)據(jù)傳輸。每一端口都可視為獨(dú)立的網(wǎng)段,連接在其上的網(wǎng)絡(luò)設(shè)備獨(dú)自享有全部的帶寬,無須同其他設(shè)備競(jìng)爭(zhēng)使用。當(dāng)節(jié)點(diǎn)A向節(jié)點(diǎn)D發(fā)送數(shù)據(jù)時(shí),節(jié)點(diǎn)B可同時(shí)向節(jié)點(diǎn)C發(fā)送數(shù)據(jù),而且這兩個(gè)傳輸都享有網(wǎng)絡(luò)的全部帶寬,都有著自己的虛擬連接。
原裝德國(guó)赫斯曼HIRSCHMANN交換機(jī)型號(hào)價(jià)格
RS20-0400M2T1SDAEHC (3×RJ45 1×SC,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管增強(qiáng)型)
RS20-0400M2T1SDAPHC (3×RJ45 1×SC,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管專業(yè)版)
RS20-0400M2M2SDAEHC (2×RJ45 2×SC,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管增強(qiáng)型)
RS20-0400M2M2SDAPHC (2×RJ45 2×SC,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管專業(yè)版)
RS20-0800M2M2SDAEHC (6×RJ45 2×SC,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管增強(qiáng)型)
RS20-0800M2M2SDAPHC (6×RJ45 2×SC,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管專業(yè)版)
RS20-0800M4M4SDAEHC (6×RJ45 2×ST,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管增強(qiáng)型)
RS20-0800M4M4SDAPHC (6×RJ45 2×ST,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管專業(yè)版)
RS20-1600M2T1SDAEHC (15×RJ45 1×SC,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管增強(qiáng)型)
RS20-1600M2T1SDAPHC (15×RJ45 1×SC,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管專業(yè)版)
RS20-1600M2M2SDAEHC (14×RJ45 2×SC,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管增強(qiáng)型)
RS20-1600M2M2SDAPHC (14×RJ45 2×SC,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管專業(yè)版)
RS20-2400M2M2SDAEHC (22×RJ45 2×SC,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管增強(qiáng)型)
RS20-2400M2M2SDAPHC (22×RJ45 2×SC,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管專業(yè)版)
RS20-0400S2T1SDAEHC (3×RJ45 1×SC,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管增強(qiáng)型)
RS20-0400S2T1SDAPHC (3×RJ45 1×SC,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管專業(yè)版)
RS20-0400S2S2SDAEHC (2×RJ45 2×SC,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管增強(qiáng)型)
RS20-0400S2S2SDAPHC (2×RJ45 2×SC,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管專業(yè)版)
RS20-0800S2S2SDAEHC (6×RJ45 2×SC,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管增強(qiáng)型)
RS20-0800S2S2SDAPHC (6×RJ45 2×SC,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管專業(yè)版)
RS20-1600S2S2SDAEHC (14×RJ45 2×SC,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管增強(qiáng)型)
RS20-1600S2S2SDAPHC (14×RJ45 2×SC,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管專業(yè)版)
RS20-2400S2S2SDAEHC (22×RJ45 2×SC,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管增強(qiáng)型)
RS20-2400S2S2SDAPHC (22×RJ45 2×SC,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管專業(yè)版)
RS20-0400T1T1SDAEHC (4×RJ45,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管增強(qiáng)型)
RS20-0400T1T1SDAPHC (4×RJ45,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管專業(yè)版)
RS20-0800T1T1SDAEHC (8×RJ45,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管增強(qiáng)型)
RS20-0800T1T1SDAPHC (8×RJ45,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管專業(yè)版)
RS20-1600T1T1SDAEHC (16×RJ45,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管增強(qiáng)型)
RS20-1600T1T1SDAPHC (16×RJ45,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管專業(yè)版)
RS20-2400T1T1SDAEHC (24×RJ45,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管增強(qiáng)型)
RS20-2400T1T1SDAPHC (24×RJ45,0℃至+60℃標(biāo)準(zhǔn)溫度,網(wǎng)管專業(yè)版)
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