Hi, I have to implement a new type of queue. I would like to know if it is necessary to update anything in tcl files. For example, I' ve found in tcl/lib/ns-compat.tcl (line 599) a list of command such: set queueMap_(drop-tail) DropTail set queueMap _(sfq) SFQ ...... Should I add to this list a command also for my queue? Could anybody help me? Thanks Sara