topic Re: Does AP310i connected in line of site cause any slow speed or coverage issue due to interference? in ExtremeWireless (WiNG)

Does AP310i connected in line of site cause any slow speed or coverage issue due to interference?

ddpatil89 — Thu, 14 Jan 2021 18:50:20 GMT

Does AP310i connected in line of site cause any slow speed or coverage issue due to interference?

In our HO we have VX9000 controller installed along with 2 310i Access points connected in line of site to each other. Users complaining slow speed issue also coverage is less.

Please refer attached floor plan along with access point placement marked in yellow.

Please let me know if the 2 access point in line of site causing any issue? How can I confirm what is the issue?

Re: Does AP310i connected in line of site cause any slow speed or coverage issue due to interference?

ddpatil89 — Thu, 14 Jan 2021 18:50:55 GMT

Re: Does AP310i connected in line of site cause any slow speed or coverage issue due to interference?

Ronald_Dvorak — Thu, 14 Jan 2021 19:17:30 GMT

Hi,

interference could only happen if both APs operate on the same channel (or neighbour channels in case 2.4GHz).

What channels to the two APs use for 2.4GHz and 5GHz ?

Was that a replacement and the “old” APs had better coverage > what tx power is used on the APs for both bands.

-Ron

Re: Does AP310i connected in line of site cause any slow speed or coverage issue due to interference?

ddpatil89 — Thu, 14 Jan 2021 20:49:45 GMT

As it is an controller based solution. All APs have same configuration as same AP profile applied to all the APs.

2.4Ghz using channel 11.

Actually our HO shifted to new location. In our old office we were using Enterasys C25 controller with AP3610 & physical dimensions, mounting position and AP count per floor was different.

TX power is by default selected as smart.

So my concern is if we remove one AP and connect only one AP will it give us better results?

or If we place 2nd AP in non line if site location means both APs can not see each other. Will this work?

Re: Does AP310i connected in line of site cause any slow speed or coverage issue due to interference?

Ronald_Dvorak — Thu, 14 Jan 2021 21:15:25 GMT

You should make sure that APs DON’T use the same channel.

I.e. AP#1 on channel#11 and AP#2 on channel 6

If both operate on the same channel in near proximity that could result in interference and also that clients use all the same frequency = lower throughput.

-Ron

Re: Does AP310i connected in line of site cause any slow speed or coverage issue due to interference?

ddpatil89 — Thu, 14 Jan 2021 21:23:03 GMT

Thank you for the update. So do I need to manually go to each AP and change the channel correct?

What about 5GHz band same applies to that also? If yes what are the non overlapping channel in 5Ghz band?

Re: Does AP310i connected in line of site cause any slow speed or coverage issue due to interference?

Ronald_Dvorak — Thu, 14 Jan 2021 21:30:52 GMT

Normally I’d expect that the AP profile has auto channel selection enabled so the AP could choose from 1,6,11 on the 2.4GHz band = if 20MHz channel width is enabled (you shouldn’t use 40MHz on that band).

Regarding the 5GHz band and non overlapping channels it would depend on which channel width is used only 20MHZ or 40MHz (=2x 20MHz channels bonded), 80MHz (=4x 20MHz channels bonded).

For 20MHz there is no overlap, if you’ve 40MHz you’d run on AP on channel#36/40 and the other AP on channel#44/48.

https://www.networkcomputing.com/wireless-infrastructure/channel-bonding-wifi-rules-and-regulations

-Ron

Re: Does AP310i connected in line of site cause any slow speed or coverage issue due to interference?

ddpatil89 — Fri, 15 Jan 2021 11:28:11 GMT

I Just checked -

for AP 1 -

2.4 GHZ channel : 6; power : 15

5 GHZ channel : 52; power : 17

for AP 2 -

2.4 GHZ channel : 11; power : 15

5 GHZ channel : 36; power : 17

Re: Does AP310i connected in line of site cause any slow speed or coverage issue due to interference?

StephanH — Fri, 15 Jan 2021 14:39:52 GMT

Hello,

the channel looks good. Channel 52 is a DFS channel that means if another so called primary user ( for example radar) is detected on the channel, it can be that the AP chooses a new channel. But if this is the cause, then the problems would occur only sometimes and only in 5GHz.

Do the problems occur in both frequency bands?

Are you using 20 or 40MHz wide channels?

Re: Does AP310i connected in line of site cause any slow speed or coverage issue due to interference?

Tomasz — Tue, 19 Jan 2021 18:40:00 GMT

Hi,

Just to add, what do you mean ‘slow speed’ and ‘coverage issues’? Slow speed ie. datarates or throughputs? How was it tested (speedtest.net, iperf, some apps like Youtube or downloading documents)? How many client devices are in the area connected to individual radios? Tx power seems quite high so if there were any coverage issues it might be due to wall loss or other kind of obstacles for example, and slow data might come because too many devices fight for the airtime at the same time. Some non-wifi interferences (or other wifi networks on same channels nearby) might affect WiFi performance as well.

Hope that helps,

Tomasz

Re: Does AP310i connected in line of site cause any slow speed or coverage issue due to interference?

ddpatil89 — Wed, 20 Jan 2021 13:15:14 GMT

Thank you all for your inputs. After complete network logs review, we found that during the issue time our ILL link got chocked due to some windows 10 updates running on multiple PC’s in backend. So as of now no issue with slow speed & coverage.