6GK7443-1GX10-0XE0
網(wǎng)橋 網(wǎng)橋概述： 依據(jù)幀地址進(jìn)行轉(zhuǎn)發(fā)的二層網(wǎng)絡(luò)設(shè)備，可將數(shù)個局域網(wǎng)網(wǎng)段連接在一起 。網(wǎng)橋可連接相同介質(zhì)的網(wǎng)段也可訪問不同介質(zhì)的網(wǎng)段。網(wǎng)橋的主要作 用是分割和減少沖突。它的工作原理同交換機(jī)類似，也是通過MAC地址 表進(jìn)行轉(zhuǎn)發(fā)。網(wǎng)橋主要完成三個功能：轉(zhuǎn)發(fā)、過濾數(shù)據(jù)幀；幀格式轉(zhuǎn)換 ；傳輸速率轉(zhuǎn)換。 透明網(wǎng)橋：無需改動設(shè)備的軟硬件配置，即可完成LAN互連的網(wǎng)橋。交換 機(jī)可看做多端口透明網(wǎng)橋。 路由器的簡單介紹
6GK7443-1GX10-0XE0
聯(lián)系人：郭先生
聯(lián)系電話：18971415643《優(yōu)先》
座機(jī)：027-83238871
傳真：207-61537051
QQ：810334512《優(yōu)先》
6GK7443-1GX10-0XE0
1984年：西門子為中國建設(shè)了第一條高壓直流輸電線。這條輸電線可 以將1,200兆瓦的電力從位于長江中游的當(dāng)時中國最大的水力發(fā)電站— —葛洲壩水電站輸送到遠(yuǎn)在千里之外的上海市。此項工程于1989年竣工 ，標(biāo)志著西門子對中國高壓直流電力的傳輸作出了巨大的貢獻(xiàn)，同時也 顯示了西門子在安裝高技術(shù)設(shè)備方面的專業(yè)性及其產(chǎn)品的可靠性。
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