FIXME Specifies where to look for the current throughput information for this LINK. Currently this can be done in 5 ways:
The default DS names for RRD files are 'traffic_in' and 'traffic_out', which works with the majority of Cacti RRD files. For MRTG-produced RRD files, the names are 'DS0' and 'DS1'. You can also specify '-' for either DS name, which tells Weathermap to ignore this rrd file for the purposes of the input or output value. This is mainly useful in combination with the aggregation feature.
For tab-delimited data files, the format is plain-text, with three tab-seperated columns. The first one is a linkname, and the second and third are traffic-in and traffic-out, respectively. The linkname should match the name in the configuration file. This allows you to create one text file for the entire map from some outside source. Traffic in & out values can use the same "K,M,G,T" abbreviated forms as the BANDWIDTH configuration command. The file should have an extension of .txt or .tsv to be recognised as a tab-delimited file by Weathermap.
You can also specify multiple targets, which will then be added together to make the aggregate bandwidth which is then displayed. Specify the targets on one TARGET line, seperated with a space.