A commonly used artifact for the documentation of the communication in a network is the N-squared (N2) chart. In an N2 chart the basic nodes of communication are located on the diagonal, resulting in an NxN matrix for a set of N nodes. For a given node, all outputs (SysML required interfaces) are located in the row of that node and inputs (SysML provided interfaces) are in the column of that node. The diagram below depicts the N2 chart of the Security System architecture.

The N2 chart of the Security System architecture. may be generated by means of the SE-Toolkit feature Generate N2 Matrix.

1. In the ArchitecturalDesignPkg right-click the internal block diagram IBD_SecuritySystem and select SEGenerate N2 Matrix.
   
2. Inspect the results.