Unexpected latency with Intel(R) Wi-Fi 6E AX211

YKSISE — Wed, 16 Oct 2024 09:49:29 GMT

Hi all,

We are experiencing strange behavior with our wifi network card Intel(R) Wi-Fi 6E AX211 160MHz.

Our test environement is the following :

Windows 11 Professionnel
Version 23H2
Wifi : Intel(R) Wi-Fi 6E AX211 160MHz
Driver Version :" Intel 23.80.1.3"

When we send TCP traffic throug the network with a large amount of data (>1500bytes), the packet is not fragmented. Is this behavior normal ?

Because when we perform the same test with another model of wifi card, wireshark shows fragmented packets.

We have ~500ms latency between the request (packet 12 on on wireshark trace) and the reply (packet 16 on wireshark trace) when the packets is not fragmented. When the packet is fragmented, the reply arrives with low latency.

I have tried to set up differents wifi advanced options in order to see if It changes the fragmentation behavior but it didn’t help.

Please find attached wireshark traces showing the latency and the log files from SSU.

The problem is seen on dell and hp laptops using this specific wifi card.

Looking forward for your response.

Best regards,

Yoann

Re: Unexpected latency with Intel(R) Wi-Fi 6E AX211

YKSISE — Thu, 24 Oct 2024 14:45:27 GMT

Hi,

Do you have any feedback to provide ?

At least, how can we force packet fragmentation ?

Thank you.

topic Unexpected latency with Intel(R) Wi-Fi 6E AX211 in Wireless

Unexpected latency with Intel(R) Wi-Fi 6E AX211

Re: Unexpected latency with Intel(R) Wi-Fi 6E AX211