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To define your own detail level, open conf/opCommon.nmis (for opReports 3.X, or conf/opReports.nmis for opReports 2.x) in an editor and look for the block named ''report_wan_levels", which should look like this:
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The three values above are given in percent and specify the thresholds for counting exceptions in terms of packet errors, packet discards and interface utilisation percentages, respectively.
Your In opReports 2.x your new report detail levels will show up on the Reporting Option Menu page immediatly after you save the opReports.nmis configuration file. To use these detail levels from the command line simply add the argument level=N to your invocation of opReports.pl, with N being the index of the desired detail level.
For opReports 3.x you need to restart the Opmantek Web Service (with sudo service omkd restart or similar) to see them in the report creation GUI; the command line tool opreports-cli.pl uses the option report_wan_level=<name or number> to select the level.