AP Randomly Restart

[ricardo_naval]

Hi all Wireless Gurus,

I just want to share some problem on our WLAN and looking for suggestion that will help us to solve this problem. We are using ZD3000 and having about 60 AP. We always experiencing randomly restarting of AP with seconds interval. Most of our AP is 7363 model and the FW of our ZD is 9.8.2.0 build 15. It gave us a headache causing some user to raise ticket for slowness or intermittent in connection. Hoping someone would help us. 

Regards,

4Jonjon20

[andrea_coppini]

Check the ZD side, check the switch logs, look at the interface error counters for hints. Try replacing the ZD's patch lead

[seanmuir]

Increase the Auto recovery to say 30mins or so:



That should solve your issue as heartbeat packet is not priority and in a loaded network the lower value can have an affect on AP's rebooting.

This topic has been asked about before, albeit based on another AP model:

https://forums.ruckuswireless.com/ruckuswireless/topics/occasional-heartbeat-losses-on-r710

Good Luck

[andrea_coppini]

Try to identify the cause of the heartbeat losses first, it is usually cabling related, it's rarely due to load.

Changing the reboot timeout is only covering the symptoms, not fixing the root cause. The APs might not reboot, but the clients will have trouble connecting since every connection and roam needs to go through the ZD. To avoid relying on the ZD you would need to run the SSID in Autonomous mode, but again this would simply be brushing the symptoms under the carpet.

[seanmuir]

I have seen this loads of times and by setting the value to higher than the default it sorts the issue.

Additionally when the network is quiet I never see AP's rebooting, its always under load.

[andrea_coppini]

Then you must have network saturation somewhere between your AP and ZD. There are loads of deployments with hundreds of APs and no issues with heartbeat loss or AP reboots. The most common network issue I see is duplex mismatch in the uplinks causing a lot of collisions.