* What is WFQ ? Where I can read more about this scheduling policy ?--------------------------------------------------------------------  A.K. Parekh and R.G.Gallager. "A generalized processor sharing approach   to flow control in integrated services networks: the single node case".  IEEE/ACM Transactions on Networking, 1(3):344-357, Jun 1993  S. Vegesna. "IP Quality of Service". Cisco Press, 1st edition, 2001 * What each source file is responsible for ?--------------------------------------------------------------------  wfq.cc           - main file  wfqclassifier.cc - abstract classifier that help WFQ to determine the                      right class of a packet (may disapper in the future)  wfqaggreg.cc     - the classifier that selects a packet based on a                     value of its FID (flow ID)* Does implementation of WFQ change something in the NS-2 simulator ?---------------------------------------------------------------------  Yes and no. Of course, it changes Makefile.in so that new source files  are compiled and included into the binary. But from the conceptual point  of view, everything remains the same.