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0 pointsStudentStuff8y ago0 comments

The unnecessary flood of multicast packets these Google devices send is causing your AP to drop to its lowest speed and broadcast those packets.

Its the equivalent of having an 802.11B client that only syncs at 1Mbps and is constantly downloading. There is no airtime left for anyone else!

Things you can try: Block 802.11G and lower clients (increases your minimum WiFi transmission speed), convert multicast packets to unicast (LEDE is apt to support that), or throw the chromecast in the dustbin!

0 comments

gd28y ago

The scary part is that it takes highly involved HackerNews readers to possibly understand what's happening. Most regular folk are going to just think, Wi-Fi got flaky again.

voltagex_8y ago

Hang on, if you're converting multicast packets does that mean only one device is receiving them?

kuschku8y ago

The WiFi AP handles unicast packets differently than multicast packets.

So on a network with N devices, you just convert one mulicast packet into N unicast pakcets.

Because multicast packets are sent with the slowest possible rate, this actually speeds up performance as long as N < 20.

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