7MH4105-3KC11
7MH4132-4AG11
7MH4132-4AK11
报价单位:厦门航拓电气有限公司
地址:厦门市湖里区华泰路5-11号海西工业设计中心
销售部戴先生:(同号) 固话: :1794427603
据《2013-2018年中国交换机市场竞争格局及投资前景评估报告》中显示:西门子供应商随着网络的发展从技术驱动应用,转为从应用选择技术;网络的融合也从理论走向实践;西门子模块网络的安全越来越受到重视。称重模块而交换网络的智能化提供了解决这些问题的方法。网络将在综合应用、速度和覆盖范围等方面继续发展。交换机工作于OSI参考模型的第二层,即数据链路层。交换机内部的CPU会在每个端口成功连接时,通过将MAC地址和端口对应,形成一张MAC表。在今后的通讯中,发往该MAC地址的数据包将仅送往其对应的端口,而不是所有的端口。因此,交换机可用于划分数据链路层广播,即冲突域;但它不能划分网络层广播,即广播域。
交换机拥有一条很高带宽的背部总线和内部交换矩阵。交换机的所有的端口都挂接在这条背部总线上,控制电路收到数据包以后,处理端口会查找内存中的地址对照表以确定目的MAC(网卡的硬件地址)的NIC(网卡)挂接在哪个端口上,通过内部交换矩阵迅速将数据包传送到目的端口,目的MAC若不存在,广播到所有的端口,接收端口回应后交换机会“学习”新的MAC地址,并把它添加入内部MAC地址表中。使用交换机也可以把网络“分段”,通过对照IP地址表,交换机只允许!要的网络流量通过交换机。通过交换机的过滤和转发,可以有效的减少冲突域,但它不能划分网络层广播,即广播域。
下列(包括但不限于)型号均为本公司在售产品,有需要的也可咨询!
FISHER ROSEMOUNT 657-EZ USPP 657EZ
FISHER ROSEMOUNT 667-40-ET USPP 66740ET
FISHER ROSEMOUNT USPP
FISHER ROSEMOUNT USPP
FISHER ROSEMOUNT 00079-0325-2005 USPP 5
FISHER ROSEMOUNT RELAY CL6853X1-A6
FISHER ROSEMOUNT 2E859502202 NSPP 2E859502202
FISHER ROSEMOUNT 1181T USPP 1181T
FISHER ROSEMOUNT TL102 NSPP TL102
FISHER ROSEMOUNT 0401-15 USPP 040115
FISHER ROSEMOUNT 43B5797X032 NSPP 43B5797X032
FISHER ROSEMOUNT 00068-0013 USPP 000680013
FISHER ROSEMOUNT 11B5804X212 NSPP 11B5804X212
FISHER ROSEMOUNT 244RF USPP 244RF
FISHER ROSEMOUNT 9150023-531 USPP 9150023531
FISHER ROSEMOUNT 111 USPP 111
FISHER ROSEMOUNT Y690A-1 NSFP Y690A1
FISHER ROSEMOUNT TL108 USPP TL108
FISHER ROSEMOUNT 92300035 USPP 92300035
FISHER ROSEMOUNT R722 USPP R722
FISHER ROSEMOUNT 622605 USPP 622605
FISHER ROSEMOUNT TL156 USPP TL156
FISHER ROSEMOUNT 9150027-881 USPP 9150027881
FISHER ROSEMOUNT 3001862 USPP 3001862
FISHER ROSEMOUNT TL104 USPP TL104
FISHER ROSEMOUNT RPACKX00032 NSFP RPACKX00032
FISHER ROSEMOUNT 92L13020 USPP 92L13020
FISHER ROSEMOUNT 623875 USPP 623875
FISHER ROSEMOUNT TL173 USPP TL173
FISHER ROSEMOUNT 140-05 USPP 14005
FISHER ROSEMOUNT 21008-815 USPP 21008815
FISHER ROSEMOUNT 1151GP7S22B1 NSFP 1151GP7S22B1
FISHER ROSEMOUNT 9150026-503 USPP 9150026503
FISHER ROSEMOUNT 23245-01 USPP 2324501
FISHER ROSEMOUNT 95H USPP 95H
FISHER ROSEMOUNT 66-ZZ63 USPP 66ZZ63
FISHER ROSEMOUNT 9150023-663 USPP 9150023663
FISHER ROSEMOUNT 12687-01 USPP 1268701
FISHER ROSEMOUNT 2516 USPP 2516
FISHER ROSEMOUNT 638490 USPP 638490
FISHER ROSEMOUNT 70YY18029 USPP 70YY18029
FISHER ROSEMOUNT 624207 USPP 624207
FISHER ROSEMOUNT 5010-113-AD USPP 5010113AD
FISHER ROSEMOUNT 9235401-105 USPP 9235401105
FISHER ROSEMOUNT 03031-0006 USPP 030310006
FISHER ROSEMOUNT 9150022-713 USPP 9150022713
FISHER ROSEMOUNT 9150027-594 USPP 9150027594
FISHER ROSEMOUNT 05-00003 USPP 0500003
FISHER ROSEMOUNT 01 USPP 01
FISHER ROSEMOUNT 23056-03 USPP 2305603
FISHER ROSEMOUNT 631773 USPP 631773
FISHER ROSEMOUNT 268 USPP 268
FISHER ROSEMOUNT 4001 USPP 4001
FISHER ROSEMOUNT 01 USPP 01
FISHER ROSEMOUNT 9150023-511 USPP 9150023511
FISHER ROSEMOUNT 12P0144X032 NSPP 12P0144X032
FISHER ROSEMOUNT 1054AT USPP 1054AT
FISHER ROSEMOUNT 3144P D1A1NAB4 NSFP 3144PD1A1NAB4
FISHER ROSEMOUNT 289H-42 USPP 289H42
FISHER ROSEMOUNT TE1240 USPP TE1240
FISHER ROSEMOUNT 95-L-17 USPP 95L17
FISHER ROSEMOUNT 13B0344X032 NSPP 13B0344X032
FISHER ROSEMOUNT TS113 USPP TS113
FISHER ROSEMOUNT TL113 USPP TL113
FISHER ROSEMOUNT 1054BLC-01 USPP 1054BLC01
FISHER ROSEMOUNT 1055-01-11-22 USPP 1055011122
FISHER ROSEMOUNT 9150023-552 USPP 9150023552