EAP225-Wall: 800 + 300 MBit WLAN, but 100 MBit LAN???

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EAP225-Wall: 800 + 300 MBit WLAN, but 100 MBit LAN???
EAP225-Wall: 800 + 300 MBit WLAN, but 100 MBit LAN???
2020-04-28 09:49:37
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Hello everybody!

 

Is it true that the EAP225-Wall is an WLAN Access Point providing 867+300 MBit on the wireless side, but only 100 MBit at the Ethernet Connection?

 

At least that what's written here and in the datasheet.

 

Whats the use case for an access point with the wirespeed of 1/10th of the on-air bandwidth???

 

Thank you.

 

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Re:EAP225-Wall: 800 + 300 MBit WLAN, but 100 MBit LAN???
2020-04-28 14:06:11 - last edited 2020-04-28 14:09:23

 

ITServ wrote 

Whats the use case for an access point with the wirespeed of 1/10th of the on-air bandwidth???

 

Imagine a hotel with 50 rooms equipped with 50x EAP-Wall and a 500 Mbps Internet uplink in total.

 

With such an amount of APs even the theoretical 10 Mbps per AP needs to be send over the air for each of the 50 EAPs. Since WiFi is a shared medium, it's a big advantage to have AC throughput rather than, say, N300 throughput over WiFi. With AC mode each AP transmitting data won't consume too much AirTime and thus won't cause interferences to other APs.

 

If you just use one EAP-Wall and want to use full Ethernet Gigabit bandwidth, consider use of EAP235-Wall. But same as above applies for AirTime to this model, too, so don't be surprised to get just a fraction of the Gigabit throughput per each EAP when using 50x EAP235-Wall.

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Re:EAP225-Wall: 800 + 300 MBit WLAN, but 100 MBit LAN???
2020-04-29 10:27:37

@R1D2 Thank you four your explaination.

 

I suspected a typo in the marketing brochure, but your description is interesting. So it's not an error, its intentional and has a use case.

 

 

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Re:EAP225-Wall: 800 + 300 MBit WLAN, but 100 MBit LAN???
2020-04-29 11:32:50

 

ITServ wrote

So it's not an error, its intentional and has a use case.

 

Yes. WiFi rates are not necessarily related to Ethernet wire rates, but WiFi rate must always be a multiple of the wire rate to achieve the full wire rate.

 

The EAP235-WALL violates this rule of thumb: its max. 5 GHz rate is 867 Mbps, max. 2.4 GHz rate is 300 Mbps.

 

Thus, goodput is roughly 640 Mbps (5 GHz @80 MHz chanel width), resp. 210 Mbps (2.4 GHz @40 MHz channel width). So, Gigabit goodput (which is 1,000 Mbps in each direction = 2,000 Mbps in total) can never be reached.

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