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3 unleashed R310, client stickiness

jan_willem_henn

Hi, I have 3 R310 unleashed AP’s, connected by wire (no roaming).

two are on the ground floor (attached to ceiling), one on the second floor, facing down.

when I am on the first floor, my clients (iPhone) keep connecting to the R310 attached on the ceiling of the floor below (ground floor). Network speed on 5ghz is then around 70mbit.

when I disable the AP on the ground floor, the clients connect to the one on the second floor, resulting in much higher internet speeds (150mbit).

I tried lowering the transmit power on the ground floor in order to get clients moving to the AP upstairs, but I need to lower till 1/4 in order to let clients switch to the AP on the second floor. This also results in too limited coverage on the ground floor and garden.

any tips what I can do?

thank you

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jan_willem_henn

Ok, so I have experimented a lot and finally configured my 3 r310’s as follows:

Separate ssid’s for 2.4 and 5 GHz
Fixed channels 1,6,11 on 2,4
Fixed channels 36, 44, 52 on 5
Channel width on 5 ghz to 40mhz
BSS-minrate on 12 (both ssid’s)
OFDM-only mode enabled (both ssid’s)
802.11k enabled (both ssid’s)
802.22r enabled (both ssid’s)

still a little stickiness on some devices, so also enabled:

802.11v smart-roam level 3

now works perfectly!

No client stickiness and no devices connected to the wrong AP’s.

As an advice for others, it is very beneficial to name your AP’s based on their location, and validate if the clients are connected to the most logical (nearest) AP. All my devices have connectivity level 'excellent' right now.

If it's helpful for others, I am willing to share all the SSH commands. Please let me know if needed.

Any tips or follow-up advices are welcome!

Two more questions: do I need to disable background scanning when using fixed channels? And how can I check in the logs if DFS is triggered?

All comments

abilashpr

Dear Jan,

Please try to disable lower data rates, it should help in making the client to connect to nearest AP.

Hope it helps !!!

Regards,

Abilash PR.

jan_willem_henn

@abilashpr thnx! But how to do that? By enabling 11n/ac mode only? Or via SSH?

and would enabling 802.11r and 802.11k be useful in this case?

unknown

I would suggest first assessing what the dBm of each AP reported by a WiFi scanner as you walk about on the second floor. If the values are very close (say within 20 dBm) between the 2nd floor and ground floor APs, then I would consider relocating the APs to minimize overlap.

Then I would experiment with either setting bss-minrate, say to 12 (which means disallow connections if the data rate is < 12) and/or smart-roam, which will deauthorize clients if another AP sees the client with a much stronger signal. You can do a web search for Ruckus articles on these settings.

unknown

802.11r & k can be helpful if you clients support them (the iPhone does) - it allows the connection to the new AP to be setup before losing the connection to the old AP so the transition is faster/seamless. This way as the client changes APs (and channels because each AP should have its own channel to minimize interference) it does the smallest drop in performance during the changeover.

hayward_kong

As suggested by another poster, as long as your clients support it.. try turning on 802.11k, 802.11r, and 802.11v.

I know 802.11k and r are in the webGUI.

However, 802.11v seems to be needed to activated in CLI.

Please see this thread on

https://forums.servethehome.com/index.php?threads/roaming-with-ruckus-in-large-concrete-home.29761/

jan_willem_henn

@hayward_kong thnx! Wondering though, what I understand of 802.11v, the client gets kicked when signal strength is below a certain threshold, correct?

I still like coverage in the end of my garden, which is limited, but more then enough. Will that be impacted as well, e.g. will I have the risk of having no coverage in the garden at all?

second question: I do have a lot of iPhones. But might there be devices that are impacted negitively by enabling 802.11v (and k and r)? E.g do all my devices need to support v k and r? I have no way to guarantee that.

syamantakomer

Hi Jan,

Most of modern devices support these features. If you are not sure, just look for the specifications of any of your devices, which is older or which you think doesn't support it.

jan_willem_henn

thnx, but if it doen't support, will it give issues? are the technologies backward compatible?

jan_willem_henn

Regarding smartroam (802.11v) if enabled, whena device is kicked and is not able to find a stronger AP, will it reconnect to the first AP again?

and when will it then be released again?

reason is for coverage in my garden.

jan_willem_henn

Ok, so I have experimented a lot and finally configured my 3 r310’s as follows:

Separate ssid’s for 2.4 and 5 GHz
Fixed channels 1,6,11 on 2,4
Fixed channels 36, 44, 52 on 5
Channel width on 5 ghz to 40mhz
BSS-minrate on 12 (both ssid’s)
OFDM-only mode enabled (both ssid’s)
802.11k enabled (both ssid’s)
802.22r enabled (both ssid’s)

still a little stickiness on some devices, so also enabled:

802.11v smart-roam level 3

now works perfectly!

No client stickiness and no devices connected to the wrong AP’s.

If it's helpful for others, I am willing to share all the SSH commands. Please let me know if needed.

Any tips or follow-up advices are welcome!

Two more questions: do I need to disable background scanning when using fixed channels? And how can I check in the logs if DFS is triggered?

sudershan_gupta

Can you send the commands used. i have 5 scattered around the house, R510 and one R610 and also outside one. Constantly have missed areas and drop calls and signals and sticky client even after putty use and changes done as suggested by few.