So you think you understand IP fragmentation?

Posted Feb 9, 2024 17:03 UTC (Fri) by pizza (subscriber, #46)
In reply to: So you think you understand IP fragmentation? by Cyberax
Parent article: So you think you understand IP fragmentation?

> Also, how do APs handle jumbo frames? I need to do some experiments...

Based on my (admittedly not recent), they don't handle it well. Indeed, despite wifi nominally supporting 2300ish byte MTUs, APs routinely fail with anything over 1500 bytes. Because reasons.

(That is is the main reason why I reverted back to 1500 byte MTUs on my home networks....)

So you think you understand IP fragmentation?

Posted Feb 9, 2024 17:22 UTC (Fri) by Cyberax (✭ supporter ✭, #52523) [Link]

Ha. My AP synthesizes ICMP Too Big packets. Layering violation, you say?

I have 9k MTU within my home network (and I get 10500 megabits over 10GB connections), and so far my WiFi has been behaving pretty well. I can get 1.5GBps download and 2.5GBps upload.