AP3935 not working on Cloud IQ Controller

[DPI]

Hello,

we are moving our AP3935i from :
Wireless Controller version 10.51.24.0003
to
Cloud IQ Controller version 10.05.02.0019

AP are properly seen by XIQ-c.
Once configured in XIQ-c, AP is going to "in-service" mode, up and running with radio enabled.
But then, unexpected reboot in loop. (with various delay, from few seconds to 5 minutes)

Tested on several AP, and same behaviour.

we already have more than 500 antennas AP310 &410 running fine on XIQ-C). And i have around 500 more  AP3935 to migrate, impossible to get rid of this model right now.

Any ideas ? thank you.

Already tried :
reset factory, deletion from old controllers (even if no evidence of remaining connection to old controllers)

From logs, i can see :
Configuration has been resent the maximum number times, but no acknowledge has been received. Releasing AP...

Any ideas ?
Thank you.

[Jan_Reister]

I've been there. Looks like the AP can't maintain a stable tunnel with the controller and it enters a reboot cycle.

• check the XIQ-C logs, tcpdump, ap trace, CLI
• make sure an initian tunnel is setup with the controller and the  AP gets the config from XIQ
• try lower the MTU to 1400 on both the device profile and via CLI on the AP itself;
• push up the poll timeout in the device profile
• set the controller ip address statically on the AP via CLI
• check for packet loss and other indicators of a network issue.

In one case it was a network issue due to VRRP instability causing the gateway to flap too quickly, this caused "data port congestion" warning in the controller dashboard.

Another site had mismatched fiber/SFPs that caused connection degradation and packet loss.

Look lice older controllers like C5210 EWC and HWC and their AP firmware version were more tolerant.

Cheers,

Jan

[StephanH · Accepted solution]

Hello DPI,

two approaches,

1. try to set the MTU size to a small value. Possibly not everything from the Config is transferred successfully.
2. switch off the encryption of the connection between AP and controller. I assume that this was not yet on on the old controller. In the XIQ controller it is on by default.

Regards

Stephan