The normal use of IP**, network** monitoring and wireless Ethernet devices in the network needs to rely on AC/DC converters to provide DC power. However, these monitoring and equipment are usually installed on the ceiling or outdoors, and it is difficult to find a suitable power outlet nearby, and even if there is an outlet, it is difficult to place the AC/DC converter required by the terminal equipment, which requires Power over Ethernet PoE to solve the related problems. Let's take a look at the role of PoE and what PoE switch products can be used by enterprises that can support PoE power supply.
poeWhat does it do? PoE power supply standardWhat are they?
PoE is a wired Ethernet power supply technology, which can be used for data transmission network cables and has the ability of DC power supply at the same time, effectively solving the problem of centralized power supply for power supply equipment such as PoE switches and IP**, wireless APs, credit card machines, cameras, data acquisition and other powered equipment.
In response to the compatibility between power supply and receiving equipment from different manufacturers, the IEEE Standards Committee has formulated three PoE standards: IEEE 8023AF standard, IEEE 8023AT standard, IEEE 8023bt standard. The three standards have different requirements for the DC power supply and power supply provided by each port, corresponding to the three power supply technologies of PoE, PoE+, and PoE++.
How to determine whether the product supports PoE power supply?
If you want to know whether the device can support PoE power supply, the key depends on its hardware facilities, and devices that do not support PoE power supply cannot be upgraded to PoE power supply devices through software upgrades. For example, if a modular switch is to be used as a PoE switch, it must meet both the PoE power supply requirements of the chassis and the PoE board inserted into the chassis. As long as the device model supports the PoE function, the box switch can support PoE power supply after the device is powered on.
Currently, Huawei's S series campus switches, AC controllers, and AR access routers are available in models that can support PoE power supply. For example, Huawei's S series campus switches are deployed at the access layer and use built-in or external PoE power supplies to supply power to terminal devices.
For enterprises, in many large-scale LAN applications, administrators need to manage multiple terminal devices at the same time, and due to the limitation of power supply location, it is difficult for administrators to uniformly supply power to these devices and manage them, which brings great inconvenience to power supply management. The emergence of PoE switches can effectively solve the problem of centralized power supply management and provide convenience for equipment power supply. In short, enterprises with bottlenecks in power supply management may wish to pay attention to Huawei's PoE switch products to obtain a better power consumption experience.