I believe that the topological map in the current release does not display OpenNMS really useful information , ie general topology as such it does not display . But pretty well reflects the real topology of an isolated single SVG map when it Add category "Network interfaces". I believe that it is necessary to integrate the real topology display mechanism of SVG maps in topological map , and add a graphics display RRD traffic passes through the topological link above to which a pointer "Mouse " .