Reviewing Capture Session Events#

The following figure shows part of a capture session, where events 16 through 23 make a single Association transaction (shown in detail in the following table). The transaction begins with a node's request to a coordinator node to join its network. Each message is paired with an 802.15.4 acknowledgement from the message recipient. The transaction ends when the requesting node acknowledges receipt of the coordinator's Association response:

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Event

Summary

Description

16

Association request

Node requests permission to join the network from the network coordinator

17

802.15.4 Ack

Coordinator acknowledges message receipt

19

Data request

Node requests network data

20

802.15.4 Ack

Coordinator acknowledges message receipt

22

Association response

Coordinator permits joining

23

803.15.4 Ack

Node acknowledges message receipt

The toolbar's link connectivity button lets you view connections between network nodes. The connectivity diagram shows cumulative connections up to the current event. The following figure shows connections that were established between the network's three-nodes as of Event 52:

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