802.11n aggregation

asked 2019-03-12 21:41:25 +0000

dega
3 ●2 ●2 ●5

IEEE802.11n introduced two methods to combine multiple IP payloads in a single wifi packet.
- are these payloads separated in the wifi adapter, in the driver or in the Linux kernel?
- are those super-packets visible at the wireshark level? If yes, where can I find an example capture file?
- if they are separated in the driver or in the adapter, pseudo-headers must be created. How are managed the sequence number (SN) in the pseudo-headers?

Thanks

answered 2019-03-13 19:01:10 +0000

Amato_C
1158 ●15 ●28 ●35

I believe you are talking about A-MDPU and A-MSDU aggregation in 802.11n. If that is the case, then regarding your second question, use the folloiwng links to download example capture files for A-MPDU and A-MSDU:

https://drive.google.com/open?id=1OIy...

https://drive.google.com/open?id=1q-9...

Hope that helps

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Thanks for your answer Amato Yes, I was asking about A-MSDU and A_MPDU. But before I dig into the capture files, I would like to look at the big picture. Where are the aggregated payloads de-aggregated?

dega ( 2019-03-13 21:05:57 +0000 )edit

Sorry, I am not certain where the aggregation takes place (WiFi driver, Linux kernel, or WiFi adapter).

Amato_C ( 2019-03-14 19:05:29 +0000 )edit

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