AP2602 - Speed 50mbps and 100mbps

[Maurizio Caloro]

Hello

I have installed per now me AP2606 Autonomous this are connetect on LAN side with 1Gb TP-Cable.

i think that i have configured good. but one question about the Speed?

i read also on Cisco Paper that this AP can be transfer Speed up to 400mbps

i check this now with Laptop and MobilePhone iam 1 meter away from AP and receive following Data:

2.4Ghz = Internet Speed check ~50mbps = 6.25Mb/s

5Ghz = Intenet Speed check ~103mbps = 12.12Mb/s

please are this result realistic? i thinking that this must be "mutch" higher.

Thanks for any answer!

[marce1000]

 - Check if this thread can help you :

             https://community.cisco.com/t5/wireless-and-mobility/cisco-aironet-2602-speed-up-to-54mb-s-how-to-get-higher-speed/td-p/2816687

 M.

[Maurizio Caloro]

Hello Marce

Thanks for our (Beginner)-Link, but this settings always I have configured on cli.. 

dot11 ssid Car5Ghz

   vlan 10

   authentication open 

   authentication key-management wpa version 2

   guest-mode

   wpa-psk ascii 7 012345678098765432134567890lalala

¨

int dot11radio1

    encryption vlan 10 mode ciphers aes-ccm

    ssid Car5Ghz

but no changes will affect.......

[Maurizio Caloro]

Hello

Please can any check me Config, i try today meny config Options but still the same speed issue.

Int BVI1 running in DHCP and will receive the ip from Friewall. the internal DNS 192.168.1.9 will answer any dnslookup fine.

regards and thanks!

Mauri

[Rasika Nayanajith · Accepted solution]

if you are getting ~100Mbps for your 5GHz client, it is reasonably good throughput.

AP can go up to 450Mpbs max, due to the half-duplex nature of wireless any device cannot Tx & Rx at the same time, so 50% reduction of throughput. So your AP throughput limited to 225Mbps. In wireless there are lots of frames used for management & control (ie not taking user data traffic), depend on how much % use for those frames, your effective throughput is varying.

For the best-case scenario, you need to have 1 client in the cell and should get good RSSI/SNR. Check your client capability using given URLs and check at least it got 3SS-Spatial Stream support (which is the max you can expect for 11n client, most probably your client may support 2SS if it is 11n).

https://clients.mikealbano.com/ 

http://mcsindex.com/ 

So if your client is 2SS, then max theoretical throughput is 300Mbps. Due to half duplex nature it reduces to 150Mbps and then further reduce for Control + Mgt traffic of your cell, then ~100Mbps is looking like a good speed that you can expect.

HTH

Rasika

*** Pls rate all useful responses ***

[Maurizio Caloro]

Thanks Rasika for our very good Explanation!

so that would mean that if i buy a greater AP like 3802, not mutch more speed will be assume!?
or iam wrong? will you vote no discussion but let me clear this, please.

Regards

Mauri

[Scott Fella]

You have to take a look also at what standards an ap can achieve. 802.11n, 802.11ac and now 802.11ax. These protocols can achieve higher speeds with client devices that support those protocols. Number of spatial streams on both ap and client devices are another variable that can help with increase of overall throughput.

[Rasika Nayanajith]

Hi Mauri,

If you got 3802 which is 4x4:3 (4 Tx, 4 Tx and 3 Spatial Stream) which support 802.11n (max 450Mbps), 802.11ac wave 1(max 1.3Gbps) & 802.11ac wave 2(max 5.2Gbps) technologies.

https://www.cisco.com/c/en/us/products/collateral/wireless/aironet-3800-series-access-points/datasheet-c78-741682.html 

Like most of the cases, your client will be the limiting factor, so you have to check your client's capability. If it supports 11ac, then you would get a higher throughput to compare to 802.11n. For example, if your client supports 802.11ac & having 2 spatial streams, your client max throughput is 866.7Mbps (compare to 300Mbps 802.11n case). Refer that MCS index table

Half-duplex & air time for mgt/control frames rules apply. so your practical throughput will be a <50%of that theoretical max value.

HTH

Rasika