As the core device of network connectivity, the selection of performance and functionality of switches is crucial. When faced with a wide variety of switches in the market, many enterprise users hesitate between PoE switches and regular switches. This article will delve into the differences between the two, with a focus on introducing the advantages of PoE switches, providing comprehensive reference for enterprises to choose switches.
1、 Basic concept: The essential difference between PoE switches and regular switches
A regular switch, also known as a traditional network switch, is mainly used to achieve data transmission between network devices. It connects computers, servers, routers, and other devices through Ethernet cables to complete packet forwarding and build a stable network environment. It is only responsible for data communication and does not have power supply capability. The device requires an additional power adapter to provide separate power supply.
PoE (Power over Ethernet) switches add power over Ethernet technology to the data transmission function of ordinary switches. PoE switches can simultaneously transmit data signals and power to connected devices through Ethernet cables, simplifying the wiring process for devices that support PoE power supply, such as wireless access points (APs), network cameras, IP phones, etc., without the need for separate power lines.
2、 The core advantages of PoE switches
（1） Simplify wiring and reduce deployment costs
In traditional network deployment, equipping each device with independent power sockets and power cords not only increases the complexity of cable laying, but also increases wiring costs. PoE switches can achieve dual transmission of data and power through a single Ethernet cable, greatly reducing the number of wiring. Taking the deployment of wireless APs in enterprises as an example, after using a PoE switch, only the wireless APs need to be connected to the corresponding ports of the switch, without the need to find power sockets and arrange power cables for each AP, significantly reducing installation time and labor costs, while also making the office environment cleaner and more orderly, reducing security risks caused by messy cables.
（2） Flexible and convenient, improving equipment deployment efficiency
The flexibility advantage of PoE switches is fully demonstrated when expanding enterprise networks or adjusting device locations. Since there is no need to consider the location of the power outlet, the deployment of new devices only requires connecting them to the available ports of the PoE switch to quickly access the network and obtain power supply. For example, when a temporary event requires the installation of network cameras to monitor the site, the use of PoE switches can quickly complete equipment installation without the need to re plan power lines, greatly improving the efficiency of equipment deployment and meeting the diverse and temporary network needs of enterprises.
（3） Centralized management to enhance operational convenience
PoE switches support remote management function, and operation and maintenance personnel can centrally monitor and manage the port status, power supply, device connection status, etc. of the switch through network management software. When network equipment malfunctions, it can quickly locate the problematic port and faulty device, and repair them in a timely manner. In addition, PoE switches can also set power supply strategies for ports, such as timed power on or off, to achieve energy-saving management and further enhance the intelligence and efficiency of operation and maintenance.
（4） Safe and reliable, ensuring stable operation of equipment
PoE switches adopt strict power supply standards and security mechanisms, with functions such as overload protection and short circuit protection. When there is an abnormality in the connected device, such as a short circuit or power overload, the PoE switch will automatically cut off the power supply to avoid damaging the device or causing safety accidents due to power issues. At the same time, the power supply process of PoE switches is stable, providing continuous and reliable power support for devices, ensuring stable operation of devices in complex network environments, and reducing equipment failures caused by power fluctuations.
3、 Purchasing Guide: How to Choose a PoE Switch Suitable for Enterprises
（1） Determine PoE standards and power supply
The current mainstream PoE standards are 802.3af and 802.3at (802.3at is an updated standard that supports higher power). Under the 802.3af standard, the maximum power supply for each port is 15.4W; under the 802.3at standard, the maximum power supply for each port can reach 30W; and under the 802.3bt standard, the maximum power supply for each port can reach 90W. Enterprises need to choose the corresponding PoE switch according to the power requirements of the connected devices. For example, the power of a regular wireless AP is generally within 10W, and a switch that supports the 802.3af standard can be selected; Some high-definition network cameras or high-power wireless APs may require 802.3at or even 802.3bt standard switches.
（2） Pay attention to the number and types of ports
Determine the number of ports for PoE switches based on the size of the enterprise network and the number of devices. At the same time, pay attention to whether the switch has different types of ports, such as gigabit electrical ports, ten gigabit electrical ports, fiber optic ports, etc. If enterprises have high requirements for network transmission speed, it is recommended to choose PoE switches that support gigabit or ten gigabit ports; If long-distance transmission is required, switches with fiber optic ports can be chosen to meet diverse network connectivity needs.
（3） Consider management functions and brand after-sales service
For large enterprise networks, it is recommended to choose PoE switches that support web interface management, SNMP (Simple Network Management Protocol), and other functions to facilitate remote configuration and centralized management. In addition, brand and after-sales service are also important considerations. Renowned brand switches have more advantages in product quality, technical support, and after-sales support, which can provide long-term guarantee for the stable operation of enterprise networks.
In summary, PoE switches have become an ideal choice for enterprise network construction and intelligent upgrading due to their significant advantages such as simplified cabling, flexible deployment, centralized management, and secure reliability. When making a purchase, enterprises need to consider their actual needs and factors such as PoE standards, port configuration, and management functions to select the most suitable PoE switch, creating an efficient, stable, and convenient network environment for the enterprise.