In addition to the C++ components described above, simulating local area
networks also requires a number of existing components in ns such as
Classifier, Queue, and Trace,
networkinterface, etc. Configuring these
objects requires knowledge of what the user wants to simulate. The
default configuration is implemented in the two Tcl files mentioned at
the beginning of this chapter. To obtain more realistic simulations
of wireless networks, one can use the ErrorModel described in
Chapter .