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Occasional Contributor I

IAP-225's and wifi calling while roaming between AP's not working?

So I currently have 3 IAP-225's running 6.4.2.6-4.1.3.0_54915. I have 802.11r/k/v enabled for the SSID, and i've tested with client match enabled and disabled. My test device is an iphones 6s+ running the latest IOS using t-mobile's built-in wifi calling. If I initiate a call and move between access points the call drops the instant the handoff between AP's happens. Does anyone have any experience with this? Should this be possible or is this a pipe dream to get working? Thanks!

Re: IAP-225's and wifi calling while roaming between AP's not working?

This should be useful: https://www.google.co.uk/url?sa=t&source=web&rct=j&url=http://www.arubanetworks.com/assets/wp/WP_WiFiCalling.pdf&ved=0ahUKEwjujKLOu5DNAhWKAsAKHRU9CqAQFggjMAE&usg=AFQjCNGXTd12SX50YC8OhbdwdT4hBI1iWw&sig2=yB4igFKyGnHFS_OZWim2GQ
Cheers
James

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Guru Elite

Re: IAP-225's and wifi calling while roaming between AP's not working?


Pivot wrote:

So I currently have 3 IAP-225's running 6.4.2.6-4.1.3.0_54915. I have 802.11r/k/v enabled for the SSID, and i've tested with client match enabled and disabled. My test device is an iphones 6s+ running the latest IOS using t-mobile's built-in wifi calling. If I initiate a call and move between access points the call drops the instant the handoff between AP's happens. Does anyone have any experience with this? Should this be possible or is this a pipe dream to get working? Thanks!


How far apart are your access points?

What is the transmit power of your access points?

Did you try changing the SSID type to voice?

 



Colin Joseph
Aruba Customer Engineering

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Frequent Contributor I

Re: IAP-225's and wifi calling while roaming between AP's not working?

Collin, what does setting the SSID to voice do? what effect will that have on data traffic?


#AirheadsMobile
Guru Elite

Re: IAP-225's and wifi calling while roaming between AP's not working?

It will tag all of the data sent on that SSID as voice and give it priority from the AP to the client over the air.  It may or may not help in this circumstance.  Most likely the user could have a roaming issue..



Colin Joseph
Aruba Customer Engineering

Looking for an Answer? Search the Community Knowledge Base Here: Community Knowledge Base

Occasional Contributor I

Re: IAP-225's and wifi calling while roaming between AP's not working?

Thanks for the reply! The two AP's i'm testing with are ~50ft away from each other, the 3rd is ~65ft away from the middle AP. One is ceiling mounted on the 2nd story, the other ceiling mounted on the first. Normal wood construction no concrete/steel. I went ahead and switched the SSID to voice and it managed to roam between them successfully once, while i took care to walk extremely slowly (which i'd never actually do). Another 10 attempts or so have failed the instant a handover between AP's occurs. I went ahead and messed with the power levels, trying a combination of min: 12 max: 18/min: 3 max: 15/ and min: 12 max: max. I tried all this with client match both enabled and disabled.

Guru Elite

Re: IAP-225's and wifi calling while roaming between AP's not working?

You should have a constant ping going from a wired host to the client to see how roaming is from a protocol level..



Colin Joseph
Aruba Customer Engineering

Looking for an Answer? Search the Community Knowledge Base Here: Community Knowledge Base

Occasional Contributor I

Re: IAP-225's and wifi calling while roaming between AP's not working?

Sure I'll give that a shot thanks. How much packet loss should I expect to see while roaming?

Guru Elite

Re: IAP-225's and wifi calling while roaming between AP's not working?

One or two pings.  Three or more would not be good.



Colin Joseph
Aruba Customer Engineering

Looking for an Answer? Search the Community Knowledge Base Here: Community Knowledge Base

Occasional Contributor I

Re: IAP-225's and wifi calling while roaming between AP's not working?

Dropping between 6-12 pings on average while roaming it seems. Trying lots of combintations of max/min transmit power hasen't resulted in any better results either.

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