Figure 5.1 depicts the complete environment the applet will run in. First, its code is loaded from the web server into the web browser (as the green line in the figure shows). It then can communicate with the NeTraMet meter (which is an SNMP agent) via the SNMP applet server application. The applet server is running on the web server machine and relays all SNMP messages between the applet and the agent. The NeTraMet meter is configured using the standard tools (NeMac, nifty) and can be used to meter any of the network segments that the host it is running on has access to.