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Hi Paul,

The log was created while I was walking through a warehouse.
The warehouse network environment is CISCO branded (CISCO access points controlled by CISCO WiFi LAN controller)
Authentication is done by Radius server (WPA Enterprise –TKIP ).
As I mentioned before, The XT15’s WiFI configuration is identical as XT10’s that works perfectly.

WiFi configuration:

Network type:b/g
11n mode:disabled
11n block ack:disbled
power save mode:disabled
roaming-ap density : medium

Profile configuration:
auth.mode: wpa-enterprise(EAP)
encryption:TKIP
EAP:TLS

Best regards,

Hi Igor,

Thank you for the info you have provided so far, I am discussing this with Nikola from our partner LS Data and he will keep you informed. The solution will be posted here. We will also look at the Cisco side so Nikola will come back to you with some questions.

Hi Paul,

Do you have any update on this please?

Hi

Do you have an update on this situation please as we are currently experiencing similar problems at a customers site

Regards

Ben

Yes, two our partners, Psilog and Suraj Informatics have been able to work with XT15 and Altai A8. You can write to vinay@surajinformatics.com for more details as to how this was done.

Hi Ben,

For this community thread, the root cause and solution are different in every situation. Regarding Suraj, their customer has an Altai A8 backbone - a firmware upgrade for the Altai solved the problem.

Can you describe the exact problem you are seeing in the UK on your customer's site?

Hi Michel

We have a site currently using 8515 & 7535G2, we have introduced 12 x XT15's running the same OTT sessions as the old devices onsite, the customer has a Cisco WLC backbone. 

Since installation the XT15 devices have not been stable, we are experiencing the devices locking up which means that the user looses his session and the device requires a warm boot to be functional again. After some investigation it looks as though its the radio which locks, it appears to loose its IP address but we are unable to change/configure once this has happened as the device will not allow us into Wifi config unless rebooted.

We have tried enabling/disabling Power save and whilst this improves the ping response times to the devices it does not stop them locking up, we have also tested with the 3 preset AP Density settings and this has not resolved either.

According to the helpdesk the devices are up to date on firmware and OTT versions, i am currently in the process of getting debugs from two devices, one with power save enabled and one without.

Regards 

Ben Howlett

Hi Ben,

Our customer has exactly the same problem. We have tried different firmware’s also with no improvement, what we learned is that the problem is not shown when there is no WLAN controller and all other parameters are the same.

Regard,

Nikola

Hi Ben,

As you confirmed it has nothing to do with CCX enabled or not, I wonder if the WLC is not causing the problem. The encryption is nothing special, the OS and OTT are latest recommended releases, using WZC or Wi-Fi config makes no difference, so from a help desk point of view we are a bit clueless. Good you were able to get a debug file from one of the XT15's - in the meantime I will ask Psion UK to go on site next week. To be continued.

Hi Nikola,

That is interesting! So you only removed the WLC from the network and the XT15 worked jsut as well as the older terminals?

HI Michel,

Reffering to this issue, we have described this situation much better in TT189021. The customer actually has several sites, with same Cisco infrastructure and network parameters, the only difference is that on one site there is no WLC, and on that particular site, XT15's are roaming normally.

Best regards,

Stefan

Stefan,

Many thanks for this precise information. We are currently testing an engineering build for the XT15 on site with Ben, however we will for sure take the WLC issue into account as well!

All

We currently have 2 customers running Cisco wireless infrastructures without WLC's ans the XT15 works fine.

Regards

Ben

We use Aruba WLC (6 sites), but we see the same issues as the one with Cisco WLC, and XT10/8515 is working fine on this network.

Could it be that the XT10 is CE 5 and OTT for CE 5, and the XT15 is CE 6 and OTT for CE 6 ? maybe the issue is in CE 6 or OTT for CE 6 ??  

Thomas

Based on this thread, there appears to be multiple reports of roaming issues with the XT15s.

I will be upgrading a customer to XT15s,  which has multiple sites that uses CISCO access points and WLCs. 

It would be good to know If there is a fix, or new firmware being released shortly that addresses this problem, as significant number of terminals need be configured and deployed.

An official statement (including time frames) would be greatly appreciated.