An AP scheduling several stations to transmit at once, each on its own subcarriers — sent in a legacy PPDU so that everything on the channel, including stations that cannot decode the response, knows to stay quiet.
No frames match. Every filter above is a set of things to include — an empty set includes nothing. Turn some back on, or .
Everything here is true proportion on each lane's own axis. Labels float above their field and step down a row only where they would collide, so nothing is inflated to make its name fit. Zoom widens the whole diagram together and scrolls sideways, which keeps the lanes aligned.
Showing through . Deeper layers are hidden, not absent — the octets are still in the frame, and the fields below still exist. LLC and SNAP stay visible at L2 because IEEE 802.2 LLC is the upper sublayer of the data link layer, not something above it.
Each layer names the unit it receives from above differently from the unit the layer above hands down. They are the same octets. Nothing is added crossing a seam — the header you see appear was always inside the slot, and only becomes visible when the next layer subdivides it.
Select any field to read what it is and why it matters.
The same frame as a hierarchy rather than a scale drawing. Proportion is useful for airtime and useless for structure — a one-bit flag and a 1500-octet payload matter equally here and not at all equally above.
Every field in this transmission and what contains what — one hierarchy from the PPDU on the air down to the application's bytes. Indentation is containment. 75 fields, 75 unverified.