arcgis desktop - Network Analyst does not analyses my own created roundabouts in geofabrik shp file

I am trying to digitized the shape file data (attached) that i downloaded from geofabrik, to new roads in my region.

The network anaylst does not work beyond rounds abouts, that I create new ones. It solves the route till round about see pic 1, but beoyond that it fails. and gives me error.

Warning: No route from location "Graphic Pick 1" to location "Graphic Pick 2". Error: No solution found.

then i removed the round about from same position, it work, so something wrong with round about, can anybody help.