With larger clusters, it is even more important that you have a well-controlled wired infrastructure to support the APs. Also, things like broadcast control, having dedicated management networks, controlled broadcast domains (not spanning too many switches), become critical. It can be many things, but based on my experience the highest chances are for something not optimal in the wired environment.
Best is to take the
Aruba Instant VRD as a guide-line, and if that doesn't help, work with your partner or Aruba support to find the issue of why APs go offline.
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Herman Robers
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If you have urgent issues, always contact your Aruba partner, distributor, or Aruba TAC Support. Check
https://www.arubanetworks.com/support-services/contact-support/ for how to contact Aruba TAC. Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba Networks.
In case your problem is solved, please invest the time to post a follow-up with the information on how you solved it. Others can benefit from that.
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Original Message:
Sent: Nov 04, 2021 04:42 AM
From: Bram D'hoore
Subject: cluster of AP515's unstable
Hi,
we are in a project where the IAP's in most of our sites will increase. Now we are working on the first site (in total 183 IAP's will be connected there). The plan is to split them over 2 clusters (2 different management vlans).
So the cabling works are still going on and today we have a cluster of a little more than 50 IAP's.
We useFirmware: | 8.6.0.14-8.6.0.14_81691 |
This week a few more AP's were connected and now this IAP cluster seems to be not very stable anymore. We use Airwave as a management platform and there I can see that random AP's go offline, sometimes they are all ok, sometimes some are offline, sometimes the whole cluster is offline, ...
So I ran a ping -t to the cluster IP address. This confirms what I see in Airwave. See below.
I also surfed to the webpage of the IAP cluster itself, there I don't see alerts except for x AP's are offline.
Reply from 10.185.156.10: bytes=32 time=67ms TTL=60Request timed out.Reply from 10.185.156.10: bytes=32 time=73ms TTL=60Request timed out.Reply from 10.185.156.10: bytes=32 time=56ms TTL=60Reply from 10.185.156.10: bytes=32 time=57ms TTL=60Reply from 10.185.156.10: bytes=32 time=58ms TTL=60Request timed out.Reply from 10.185.156.10: bytes=32 time=60ms TTL=60Reply from 10.185.156.10: bytes=32 time=62ms TTL=60Reply from 10.185.156.10: bytes=32 time=62ms TTL=60Reply from 10.185.156.10: bytes=32 time=59ms TTL=60Reply from 10.185.156.10: bytes=32 time=61ms TTL=60Reply from 10.185.156.10: bytes=32 time=60ms TTL=60Reply from 10.185.156.10: bytes=32 time=60ms TTL=60Reply from 10.185.156.10: bytes=32 time=64ms TTL=60Request timed out.Reply from 10.185.156.10: bytes=32 time=58ms TTL=60Reply from 10.185.156.10: bytes=32 time=58ms TTL=60Request timed out.Reply from 10.185.156.10: bytes=32 time=60ms TTL=60Reply from 10.185.156.10: bytes=32 time=59ms TTL=60Reply from 10.185.156.10: bytes=32 time=65ms TTL=60Request timed out.Reply from 10.185.156.10: bytes=32 time=60ms TTL=60Reply from 10.185.156.10: bytes=32 time=66ms TTL=60Reply from 10.185.156.10: bytes=32 time=61ms TTL=60Reply from 10.185.156.10: bytes=32 time=61ms TTL=60Reply from 10.185.156.10: bytes=32 time=63ms TTL=60Reply from 10.185.156.10: bytes=32 time=61ms TTL=60Reply from 10.185.156.10: bytes=32 time=58ms TTL=60Reply from 10.185.156.10: bytes=32 time=59ms TTL=60Reply from 10.185.156.10: bytes=32 time=61ms TTL=60Request timed out.Reply from 10.185.156.10: bytes=32 time=61ms TTL=60Request timed out.Reply from 10.185.156.10: bytes=32 time=56ms TTL=60Reply from 10.185.156.10: bytes=32 time=63ms TTL=60Request timed out.Request timed out.Reply from 10.185.156.10: bytes=32 time=60ms TTL=60Reply from 10.185.156.10: bytes=32 time=58ms TTL=60Reply from 10.185.156.10: bytes=32 time=56ms TTL=60Reply from 10.185.156.10: bytes=32 time=61ms TTL=60Reply from 10.185.156.10: bytes=32 time=65ms TTL=60Request timed out.Reply from 10.185.156.10: bytes=32 time=76ms TTL=60Reply from 10.185.156.10: bytes=32 time=75ms TTL=60Reply from 10.185.156.10: bytes=32 time=72ms TTL=60Reply from 10.185.156.10: bytes=32 time=65ms TTL=60Reply from 10.185.156.10: bytes=32 time=63ms TTL=60Request timed out.Reply from 10.185.156.10: bytes=32 time=63ms TTL=60Reply from 10.185.156.10: bytes=32 time=65ms TTL=60
Does anyone have an idea how we can solve this instability?
Thanks!