I found this routing plug in. http://wiki.openstreetmap.org/wiki/JOSM/Plugins/Routing. I installed it in JOSM,
but when i try to use it, nothing happens. ???
I also found an email asking for the same question.
How does this plugin works? Is there another plugin that can find route from 1 node to another?
Add a routing layer: click Routing, click Add routing layer.
Make it the active layer: green check box.
Add way points:
Click on the flag symbol with the plus sign on the left side of the screen to enable adding route points. Cursor changes to a plus sign.
Click on the destination node of the data layer which is in grey due to not being the active layer. A green flag is added at the position. The first flag may take a few seconds to appear. If nothing happens zoom in and aim more precisely.
Click on the start node in the same way. A red flag will appear at the start node.
The route, i.e. a thick red line with arrows is drawn in the routing layer.
Clicking another node will make the old start a way point (yellow flag) and the new node the start.
[*]Delete way points:
Click on the flag symbol with the minus sign on the left side of the screen to enable deleting route points. Cursor changes to a cross.
Click on the flag to be deleted.
The route will change accordingly.
Oneways seem to be ignored independent of the setting.