= Path Controller = As an example experiment, we have set up a [http://geminiportal.uky.emulab.net/path_controller Path Controller] tool. Click on the link or goto http://geminiportal.uky.emulab.net/path_controller . Accept the self-signed certificate. Log on using the information on your handout. [[Image(path_controller_logon.png)]] The tool consist of a web interface that connects to the slice's nodes and allows you to change the routing paths and generate traffic between selected nodes. The interface has desktop-like windows that can be moved around and resized as you please. [[Image(path_controller_init_view.png)]] The first window we will examine contains the slice's topology. [[Image(topo_init_view.png)]] Each circle represents a node in the network. The lines represent links. Note that the global node (GN) does not have links, it acts in the background. Left click and drag a node to rearrange them. For this tutorial arrange them so they match the geminiportal layout like so: [[Image(topo_rearranged_view.png)]] As you rearrange the nodes, note the window directly below the topology window. This is the information (Info) window. [[Image(info_window.png)]] This window has some brief information about the node or link that the cursor is currently over. This case has information about '''VM-1'''. The icon represents a virtual machine. The hostname is pcvm63-2.uky.emulab.net. [[Image(info_window_vm1.png)]] This next case is for '''lan1'''. The icon represents a link. The ids are displayed for the two end points, along with each interface's ip address. [[Image(info_window_lan1.png)]] == Create Traffic == The window with the [[Image[add_generator_button.png)]] button is the Traffic Generator. Click the button to add a Traffic Generator. [[Image(new_generator.png)]] The Traffic Generator has a traffic source (Src) node and destination (Dst) node, both of which must be set. The File Size defaults to 500MB and can be anything from 1 to 1000MB. To set the Src or Dst, left click on the desired node. Once the node is highlighted, click on the [[Image(set_src_button.png)]] or [[Image(set_dst_button.png)]] to set your choice. Set the traffic from Src '''VM-1''' to Dst '''VM-4. [[Image(set_vm1_src.png, 300)]] [[Image(traffic_choices.png, 300)]] Start the traffic by clicking the [[Imge(transfer_button.png)]] button. The button color will pulse and the text will change to Transferring while the transfer is in progress. === Switch to Gemini Portal === *see traffic on lan1 === Switch to Path Controller === *set path to 3 5 4 === Switch to Gemini Portal === *see traffic on lan4 === Switch to Path Controller === *set path to 3 0 === Switch to Gemini Portal === *see traffic on lan0 === Switch to Path Controller === === Switch to Gemini Portal === === Switch to Path Controller === === Switch to Gemini Portal ===