Reply To: GT-AX11000 LAN Flooding with 4K UHD iPTV Stream – Solved Running a GT-AX11000 with a Draytek Vigor 130 on a BT 80/20 FTTC connection. Have solved the dreaded IP6023 issue with some tweaking of the Draytek settings. Now have a…

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Hi Mharv

The Draytek 130 had the latest BT firmware and was correctly set up in Bridge Mode.

IPTV settings were also correct (note that GT-AX11000 does not have an option for IGMP Snooping on wired LAN).

I’ve a long history with Asus routers, most of the suggested settings you will see posted on forums today come the results that I and a few others arrived at after some experimentation years ago.

The DSL-AC68U had issues with handling BT 4K if any of it’s extra features were switched on (Ai Protection etc.) The CPU would get overloaded resulting in the WiFi slowing down to a crawl, particularly on 5GHz. Switching everything apart from the Firewall and DDoS Protection off helped.

In this case the CPU is much more capable, the CPU is not maxing out and the WiFi is not grinding to a halt. What appeared to be happening was that the Multicast transmission was swamping the BT IPTV box, leading to very bad breakup of picture and sound. That Multicast traffic appeared to be doubled when using the Draytek (according to the Traffic Monitor on the router). Using the HG612 the traffic appears to be halved and the problem goes away.

Note this only causes an issue with the BT Sport 4K UHD channel 433, all the other IPTV channels (the HD ones) will work without issues with the Draytek in Bridge Mode.

You are right that this is all very weird.

 

 

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