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Beginner

AP IW3702-2E real bandwidth

Hello. 

Have IW3702-2E with x4 AIR-ANT2568VG-N 2.5/5.0Ghz 6/8 dBi Omni antennas.

AP is in autonomous mode ap3g2-k9w7-tar.153-3.JI4.tar.

 

I have run several copy test`s;

2.4ghz I can connect 144Mbit only, cause there is only 20Mhz mode available, and real speed approximate 4-4.5 MB/s.

5ghz I can connect 866.7-780Mbps and real speed is up to 22 MB/s

 

Is this speed results are real max speed of this AP and i should be happy with this numbers?

 

Second question, according to RTFM i can use only multi-band omni antennas (i know about directional), and i can not use two omni 2.4Ghz antennas and two omni 5Ghz antennas, not multi-band to increase range ?

11 REPLIES 11
VIP Mentor

Re: AP IW3702-2E real bandwidth

"5ghz I can connect 866.7-780Mbps and real speed is up to 22 MB/s"

 

866.7- 780Mbps is "data rate" values.

22MB/s (or 22x8 =176Mbps) is the application "throughput" value. 

Usually application throughput is much less than data rate, this is due to available airtime is consume by management frames, control frames which is not carrying any data frames. Also more clients in the cell, more they have to wait to gain the medium access, so available time for data frames further reduce.

 

If you have multiple clients on the cell, I would say that 176 Mbps value may be normal.  If you have single client on the cell, you can get best case scenario throughput (ie ~ 40-60% of data rate values)

 

HTH

Rasika

*** Pls rate all useful responses ***

Beginner

Re: AP IW3702-2E real bandwidth

Hello,

 

Thank You very much for clarification, but the question is about real speed, throughput, bandwidth or what ever, currently it does not really matter how to call it.

 

Hall of Fame Community Legend

Re: AP IW3702-2E real bandwidth

Exactly what wireless client did you use to conduct the test?
Highlighted
Beginner

Re: AP IW3702-2E real bandwidth

Hello, sorry for late response

 

I have made some changes in the way i made testing.

The connection speed from my laptop is 780.0 Mbps

 

iperf3.exe -c server01 -fM -t 30 -P 5 -R

[ ID] Interval Transfer Bandwidth
[ 4] 0.00-30.00 sec 313 MBytes 10.4 MBytes/sec sender
[ 4] 0.00-30.00 sec 313 MBytes 10.4 MBytes/sec receiver
[ 6] 0.00-30.00 sec 310 MBytes 10.3 MBytes/sec sender
[ 6] 0.00-30.00 sec 310 MBytes 10.3 MBytes/sec receiver
[ 8] 0.00-30.00 sec 308 MBytes 10.3 MBytes/sec sender
[ 8] 0.00-30.00 sec 308 MBytes 10.3 MBytes/sec receiver
[ 10] 0.00-30.00 sec 304 MBytes 10.1 MBytes/sec sender
[ 10] 0.00-30.00 sec 304 MBytes 10.1 MBytes/sec receiver
[ 12] 0.00-30.00 sec 301 MBytes 10.0 MBytes/sec sender
[ 12] 0.00-30.00 sec 301 MBytes 10.0 MBytes/sec receiver
[SUM] 0.00-30.00 sec 1.50 GBytes 51.2 MBytes/sec sender
[SUM] 0.00-30.00 sec 1.50 GBytes 51.2 MBytes/sec receiver

iperf Done.


iperf3.exe -c server01 -fM -t 30 -P 5

- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-30.00 sec 192 MBytes 6.39 MBytes/sec sender
[ 4] 0.00-30.00 sec 192 MBytes 6.39 MBytes/sec receiver
[ 6] 0.00-30.00 sec 193 MBytes 6.44 MBytes/sec sender
[ 6] 0.00-30.00 sec 193 MBytes 6.44 MBytes/sec receiver
[ 8] 0.00-30.00 sec 186 MBytes 6.19 MBytes/sec sender
[ 8] 0.00-30.00 sec 186 MBytes 6.19 MBytes/sec receiver
[ 10] 0.00-30.00 sec 207 MBytes 6.90 MBytes/sec sender
[ 10] 0.00-30.00 sec 207 MBytes 6.90 MBytes/sec receiver
[ 12] 0.00-30.00 sec 172 MBytes 5.72 MBytes/sec sender
[ 12] 0.00-30.00 sec 171 MBytes 5.71 MBytes/sec receiver
[SUM] 0.00-30.00 sec 949 MBytes 31.6 MBytes/sec sender
[SUM] 0.00-30.00 sec 949 MBytes 31.6 MBytes/sec receiver

iperf Done.

 

 

The connection speed from my laptop is 144.0Mbps on 2.4Ghz

 

iperf3.exe -c kup-bkp-01 -fM -t 30 -P 5

- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-30.00 sec 46.4 MBytes 1.55 MBytes/sec sender
[ 4] 0.00-30.00 sec 46.3 MBytes 1.54 MBytes/sec receiver
[ 6] 0.00-30.00 sec 46.0 MBytes 1.53 MBytes/sec sender
[ 6] 0.00-30.00 sec 46.0 MBytes 1.53 MBytes/sec receiver
[ 8] 0.00-30.00 sec 45.8 MBytes 1.52 MBytes/sec sender
[ 8] 0.00-30.00 sec 45.7 MBytes 1.52 MBytes/sec receiver
[ 10] 0.00-30.00 sec 45.5 MBytes 1.52 MBytes/sec sender
[ 10] 0.00-30.00 sec 45.5 MBytes 1.52 MBytes/sec receiver
[ 12] 0.00-30.00 sec 45.1 MBytes 1.50 MBytes/sec sender
[ 12] 0.00-30.00 sec 45.1 MBytes 1.50 MBytes/sec receiver
[SUM] 0.00-30.00 sec 229 MBytes 7.62 MBytes/sec sender
[SUM] 0.00-30.00 sec 229 MBytes 7.62 MBytes/sec receiver

iperf Done.

 

iperf3.exe -c kup-bkp-01 -fM -t 30 -P 5 -R

- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-30.00 sec 48.1 MBytes 1.60 MBytes/sec sender
[ 4] 0.00-30.00 sec 48.1 MBytes 1.60 MBytes/sec receiver
[ 6] 0.00-30.00 sec 38.0 MBytes 1.27 MBytes/sec sender
[ 6] 0.00-30.00 sec 37.8 MBytes 1.26 MBytes/sec receiver
[ 8] 0.00-30.00 sec 35.5 MBytes 1.18 MBytes/sec sender
[ 8] 0.00-30.00 sec 35.4 MBytes 1.18 MBytes/sec receiver
[ 10] 0.00-30.00 sec 48.1 MBytes 1.60 MBytes/sec sender
[ 10] 0.00-30.00 sec 48.0 MBytes 1.60 MBytes/sec receiver
[ 12] 0.00-30.00 sec 39.0 MBytes 1.30 MBytes/sec sender
[ 12] 0.00-30.00 sec 38.8 MBytes 1.29 MBytes/sec receiver
[SUM] 0.00-30.00 sec 209 MBytes 6.96 MBytes/sec sender
[SUM] 0.00-30.00 sec 208 MBytes 6.94 MBytes/sec receiver

iperf Done.

Hall of Fame Community Legend

Re: AP IW3702-2E real bandwidth

Exactly what wireless client did you use to conduct the test?
If this is a laptop, what is the make and model of the wireless NIC?
Beginner

Re: AP IW3702-2E real bandwidth

Dell Latitude 5591, Intel(R) Wireless-AC 9560 160MHz, driver ver 21.30.3.2 07.07.2019 Intel.

Windows 10 x64 1803

Hall of Fame Community Legend

Re: AP IW3702-2E real bandwidth

According to the Intel website, Intel(R) Wireless-AC 9560 is 2X2:2.
Beginner

Re: AP IW3702-2E real bandwidth

Do this mean if i switch AP to single band antennas 2x2.4ghz and 2x5ghz i should get the same numbers ?

VIP Mentor

Re: AP IW3702-2E real bandwidth

[SUM] 0.00-30.00 sec 1.50 GBytes 51.2 MBytes/sec receiver

 

This mean client got 409.6 Mbps (51.2x8 -> convert bytes to bits)  throughput in average. If your data rate is 780Mbps and you got 409.6 Mbps throughput, that is  normal. You will never come close to 780Mbps value in  throughput

 

I understand you had assymetric values for upload/download, I would do more testing to see.

 

Regarding 2.4GHz, lower values, it is expected.

 

HTH

Rasika

Beginner

Re: AP IW3702-2E real bandwidth


This mean client got 409.6 Mbps (51.2x8 -> convert bytes to bits)  throughput in average. If your data rate is 780Mbps

and you got 409.6 Mbps throughput, that is  normal. You will never come close to 780Mbps value in  throughput

I do not remember exactly, but i have seen somewhere on cisco, that in common you should get 0.65 of your connection rate. I have less.

 


I understand you had assymetric values for upload/download, I would do more testing to see.

What kind of tests ?

VIP Advocate

Re: AP IW3702-2E real bandwidth

0.65 is in a perfect world (meaning a chamber where no electrical interference exists). Your results (the 410 Mbps) are very good for that card if the data rate was indeed 780 Mbps.
Important, if you do parallel streams, your transfer speed can actually be lower than with a single stream. Also try TCP or UDP, that can make a big difference.
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