Welcome to the official website of Shenzhen Hua Ming Wei Communication Technology Co., Ltd.

CVI同轴高清光端机

News

Contact

Shenzhen Huaming vision Communication Co., Ltd. 

Contacts:Qing Hui

Tel: 400-886-0936

Cel: 13570831021

E-mail:1050827940@qq.com

Web:www.hmvz.com

Adds:6 floor, C1 building, Chen Wenli industrial area, 

Gongming building, Guangming New District, Shenzhen.

News and information

Your current location: Home >> News >> News and information

What is the difference between the POE power supply switch and the integrator?

Release date:2017-12-11 Author:www.hmvz.com Click:

                   What is the difference between the POE power supply switch and the integrator?

 

 1. from the bandwidth, no matter how many ports, all ports share one bandwidth, only two ports can transmit data at the same time, other ports can only wait, and the hub can only work in half duplex mode; for POE power switch, each port has an exclusive bandwidth. When two ports work without affecting the work of other ports, the POE power supply switch can not only work in a half duplex mode but also work in full duplex mode.

 POE供电交换机

 2. from the point of view of OSI architecture, the hub belongs to the first level physical layer device, while the POE power switch belongs to OSI's second level data link layer device. That is to say, the hub only plays the role of synchronizing, amplifying and shaping the data transmission, and can not effectively handle the short frame = fragments in the data transmission, and can not guarantee the integrity and correctness of the data transmission; and the POE power supply switch can not only synchronize, magnify and plastic the data transmission, but also do the data transmission. It can filter short frames, fragments, and so on.


3. from the mode of work, the hub is a broadcasting mode, that is to say, when the hub works on a port, all other ports can listen to information, easily generate the broadcast storm. When the network is large, the network performance will be greatly affected; and the POE power supply switch can avoid this phenomenon when switching. When the machine works, only the request port and the destination port respond to each other without affecting the other ports, so the POE power supply switch can isolate the conflict domain and effectively suppress the broadcast storm.


This article URL:http://en.hmvz.com/news/385.html

Related tags:POE供电交换机