@David-TP 

  @nickgreen678 @David-TP 

Hi David - Thanks for your reply. The network is more stable today - don't know why. I've sent you a pic of the network map which shows a P9 as the main Deco. I've checked for firmware updates and all is well. I've also rebooted the network. I do notice that Kitchen 3 and Custom 1 are both running at 100% CPU loading. The main Deco has now stabilised at c.78%.

Checking the System Logs this morning I can see multiple logs of the following message:

Mon Apr 24 08:11:10 2023 user.warn IMPROXY: WARNING[imp_verify_multicast_addr@206]: Group address ff02::1:ff00:0 is link-local multicast address

  @nickgreen678 @David-TP Let me know if you need me to send you the system logs. I don't seem to be able to attach the file to this message.

  @nickgreen678 @David-TP ios view of the network

  @nickgreen678 

Hello, I seemed to have had the same issue with a P9 Deco setup

Also seemed that the main Deco in router mode had no protection against a DDOS Synflood ARC.

That made the CPU from the deco go 100% Load most of the times.

I switched my main Deco into a XE75 (Deco) who can take up to 200 Devices at once. (As my P9 only took 100(with 52+ clients connected most of the time and growing)

Also subscribed for the home protection shield aswell. (for 1year see how that holds back the ddos mainly (fake echo req) who take up your cpu load..From that deco)

For some reason my isp switched my ip adress aswell. (so shame I couldn't check back if the attacks where still pointed towards my Main Deco on T-mobile 1Gbit)

The cpu loads are gone and the whole network connects more quick aswell more response times from the app as in updates.

It's easy task to switch out your main deco for a newer one (with protection if you chose to do so.)

Anyways, have a nice day.