I cant reach higher speed via eap650-Wall than 200mbit thus I started to investigate my setup.

 

Test Topology:

- EAP650-Wall via POE (configured channel with 160mhz)

- SG2428P 

- ER605

- 1gbit FTTH WAN

- cable cat6 utp / tested

- negotiated link speed between sg2428p and eap650 is 1000mbps

- negotiated link speed between wired pc and sg2428p is 1000mbps

- distance between devices and AP approx 1m

- wifi connection 5ghz

 

I measured the speed with iperf2.

 

Test scenario #1

PC wired to SG2428P as iperf server

ipad connected to AP as iperf client

Average speed is ~280mbit/s

 

Test scenario #2

PC connected to AP as iperf server

ipad connected to AP as iperf client

Average speed is ~200mbit/s

 

Test scenario #3

EAP as iperf server (ssh)

ipad connected to AP as iperf client

Average speed is ~200mbit/s

 

Test scenario #3

EAP as iperf server (ssh)

PC connected to AP as iperf client

Average speed is ~200mbit/s

 

Conslusion:

Probably the radio interference or something like does not allow the faster transmittion. In my personal opinion within 1m distance should not be any significant interference.

Particularly on 5ghz!

 

Go for wired test to eliminate radio disturbance.

 

Test scenario #4

PC wired to SG2428P as iperf client

EAP as iperf server (ssh)

Average speed is ~400mbit/s

 

 

Test scenario #5

PC wired to SG2428P as iperf server

EAP as iperf client (ssh)

Average speed is ~900mbit/s

 

My conclusion:

I cant figure out what could be causing the differences between upstream and downstream speed.

T5 would be the expected speed in both direction!

 

So after long evaulation could somebody help me, Why cant I achive min 3-400 mbit transfer speed with a business grade AP on 5ghz?

 

Thanks in advance,

Robert