Sequence diagrams are very useful in understanding the interaction between various nodes in an 802.11 network. I will post sequence diagrams of 802.11 scenarios in this blog.
Connection establishment involves the following basic steps:
The air-trace for this scenario can be downloaded here.
- The sequence diagrams will be created from "actual" air traces in the network (Notice the frame numbers in the diagram)
- The air trace used to create the sequence diagram will also be attached
- Mode: Infrastructure
- No security (Open Network)
Connection establishment involves the following basic steps:
- Scan
- In case of an active scan, the STA would send out a probe request and receive a probe response from the AP.
- In case of a passive scan, the STA would find the AP by listening to the beacon.
- Authentication
- Association
The air-trace for this scenario can be downloaded here.
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