How to select Poe, poe+, and poe++ switches? One article will show you!

PoE Or Ethernet power supply is a proven Save time and money technology , It is a LAN through the same Ethernet cable (LAN) Provide data and power safely , In the current market , If you focus on the type of Ethernet power switch , You will find that there is PoE Switch 、PoE+ Switch and PoE++ Switch . however , What do you think of these three PoE What do you know about switch types ？

PoE vs PoE+ vs PoE++ What's the difference ？

And how to make the right choice ？

What is? PoE and PoE Switch ？

What is? PoE？

PoE Technology by IEEE 802.3af Standard in 2003 Year definition , According to the standard ,PoE allow VoIP Telephone, etc PD（ Power receiving equipment ） Receive up to 12.95W Of PoE Wattage , Use only two of the four twisted pairs available in Ethernet .

So what is PoE What about the switch ？

PoE The switch is PoE An application of Technology ,PoE Switch as PSE（Power sourcing Equipment） A kind of , You can use Ethernet cable to PD Equipment power supply , Network connection .

Usually ,802.3af The switch supports each PoE The maximum power consumption of the port is up to 15.4W, The voltage range is 44V To 57V Between . And PoE Switch connection PD The voltage range is 37V to 57V.

What is? PoE+ and PoE+ Switch ？

PoE+ technology （IEEE 802.3at standard ） yes 2009 Published in PoE technology Upgraded version .

On the market PD More watts are often required , If the wireless access point needs 12.95W The above PoE Wattage to work properly , To solve this problem ,PoE plus Technology came into being , It can support high power consumption .

And PoE Network switches are similar ,PoE plus The switch is also powered by two pairs , But it adds an additional power level , The voltage range can be 42.5V to 57V Of PD Provide up to 25.5W Power ,PoE+ The maximum output power of each port of the switch is 30W, The voltage range is 50V to 57V.

What is? PoE++ and PoE++ Switch ？

In order to add more power to a wider range of equipment applications ,IEEE 802.3 The standard again requires that 2018 In PoE+ Technology upgrade to PoE++（IEEE 802.3bt standard ）.

PoE++ It can be divided into two categories ：Type 3 and Type 4.

type 3 Enable two or all four twisted pairs in the copper cable to be PD Provide up to 51W Power , type 4 On four pairs of twisted pairs in the Ethernet cable PD Chu GAODA 71W .

By the way , Cisco's know-how UPoE（ Universal Ethernet power supply ） How it works and PoE++ Type 3 similar , The latter extends IEEE PoE+ standard , take PD Double the power to 51 watts . In some cases ,UPoE Also known as PoE++.

As an Ethernet power switch and PoE plus An upgraded version of the switch ,PoE++ The switch can be in Type 3 Under each PoE The port provides up to 60W Power , stay Type 4 Up to 100W Power .

PoE And PoE+ And PoE++ Switch ： Choose which ？

Based on the above introduction , A reference chart is provided below , Sum up PoE vs PoE+ vs PoE++ Detailed specifications between , This may help to choose according to different requirements PoE Switch .

Please note that , The figures provided are only theoretically valuable , in fact ,PoE Series switches tend to overuse the total power capacity of switches with more ports .

That's because many devices will use less than maximum power , for example , If your switch comes with all PoE++ Type 4 port , This does not mean that you will be 24×7 Use all ports under maximum load , therefore , You need to calculate the power requirements of all power receiving devices you plan to connect to the switch , And for your PoE Design and select the corresponding jumper .

obviously ,PoE vs. PoE+ vs. PoE++ The main difference between switches is their working mode and power supply , This reflects their application ,802.3af Switches are usually used to support power requirements less than 15.4W The equipment , for example VoIP Telephone 、 sensor 、 Meter 、 Wireless access point with two antennas , And can't pan 、 Tilt or tilt simple static surveillance camera .

as for PoE+ Switch , It supports devices , For example, more complex translation 、 Tilt or zoom surveillance camera , And wireless access point and video with six antennas IP Telephone .PoE++ Type 3 Higher switch power , It can support video conference system components and building management equipment , also PoE++ Type 3 The switch can support devices such as laptops and televisions .

Suppose your data center only needs low standard power levels , You may insist on using PoE Switch , however , If you want to build a more powerful and high-performance network with many different devices , And don't bother to consider port restrictions , So choose PoE+ or PoE++ The switch will be the right choice .

When you start building a more demanding infrastructure or plan an upgrade , have a look PoE+ or PoE++ Technology may be wiser , However , Not everyone needs a full upgrade , If your current PoE The solution is sufficient and meets your needs , Then keep the existing PoE Network design may be reasonable .

Conclusion

The growing demand for electricity makes PoE Technology comes from PoE Evolve to PoE+ Until then PoE++, be based on PoE The switch is also from PoE The network switch has been upgraded to PoE+ Switch and PoE++ Switch , This paper clarifies PoE And PoE+ And PoE++ Differences between switches and their applications , I hope this article can give you some choices PoE Inspired by network switch .