CPE210 bridge - slow speed

CPE210 bridge - slow speed
CPE210 bridge - slow speed
2020-10-11 22:31:30 - last edited 2020-10-15 03:39:14
Model: CPE210
Hardware Version:
Firmware Version:

I have two CPE210 devices as a bridge between two buildings, about 125 feet apart.  Signal strength on client -40db.  SNR 68db.   I can run the speedtest tool and get 160 Mbps.  

One the AP side, on a computer plugged into modem I get about 180Mbps down with speedtest.net   With a computer plugged into the client, I can get about 80Mbps on speedtest.net.  Why the big slowdown?  

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Re:CPE210 bridge - slow speed-Solution
2020-10-13 02:57:46 - last edited 2020-10-15 03:39:38

@idealtrucks 

 

One the AP side, on a computer plugged into modem I get about 180Mbps down with speedtest.net   With a computer plugged into the client, I can get about 80Mbps on speedtest.net.  Why the big slowdown?  

 

The CPE210 has 100Mbps Ethernet port, which would limit the max speed to 100Mbps, with communication overhead, I think 80Mbps is good.

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Re:CPE210 bridge - slow speed-Solution
2020-10-13 23:45:35 - last edited 2020-10-15 03:39:14

@idealtrucks, to use full-duplex 100 Mbps Ethernet bandwidth over a half-duplex medium such as WiFi you need at least 300 Mbps wireless bandwith.

 

If you set 20 MHz WiFi channel width (thus reducing WiFi bandwidth to 144 Mbps in N-mode), full duplex Ethernet bandwidth will also decrease to around ~ 50 Mbps.

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Re:CPE210 bridge - slow speed-Solution
2020-10-13 02:57:46 - last edited 2020-10-15 03:39:38

@idealtrucks 

 

One the AP side, on a computer plugged into modem I get about 180Mbps down with speedtest.net   With a computer plugged into the client, I can get about 80Mbps on speedtest.net.  Why the big slowdown?  

 

The CPE210 has 100Mbps Ethernet port, which would limit the max speed to 100Mbps, with communication overhead, I think 80Mbps is good.

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Re:CPE210 bridge - slow speed
2020-10-13 12:28:05

@Yannie Ah, I didn't know the ethernet port was only 100mpbs.  That does make sense then, but a bit deceptive on the advertised speed.  

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Re:CPE210 bridge - slow speed-Solution
2020-10-13 23:45:35 - last edited 2020-10-15 03:39:14

@idealtrucks, to use full-duplex 100 Mbps Ethernet bandwidth over a half-duplex medium such as WiFi you need at least 300 Mbps wireless bandwith.

 

If you set 20 MHz WiFi channel width (thus reducing WiFi bandwidth to 144 Mbps in N-mode), full duplex Ethernet bandwidth will also decrease to around ~ 50 Mbps.

༺ 0100 1101 0010 10ཏ1 0010 0110 1010 1110 ༻
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Re:CPE210 bridge - slow speed
2020-10-14 12:16:11

Thank you all for educating me on this!

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