bsd/man/man4/dummynet.4

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   4 .Dd October 28, 2002
   5 .Dt DUMMYNET 4
   6 .Os Darwin
   7 .Sh NAME
   8 .Nm dummynet
   9 .Nd traffic shaper, bandwidth manager and delay emulator
  10 .Sh DESCRIPTION
  11 .Em dummynet
  12 is a system facility that permits the control of traffic
  13 going through the various network interfaces, by applying bandwidth
  14 and queue size limitations, implementing different scheduling and queue
  15 management policies, and emulating delays and losses.
  16 .Pp
  17 The user interface for
  18 .Em dummynet
  19 is implemented by the
  20 .Nm dnctl
  21 program, so the reader is referred to the
  22 .Xr dnctl 8
  23 manpage for a complete description of the capabilities of
  24 .Nm
  25 and on how to use it.
  26 .Sh SEE ALSO
  27 .Xr dnctl 8 ,
  28 .Xr setsockopt 2 ,
  29 .Xr bridge 4 ,
  30 .Xr ip 4 ,
  31 .Xr sysctl 8
  32 .Sh HISTORY
  33 .Nm
  34 was initially implemented as a testing tool for TCP congestion control
  35 by
  36 .An Luigi Rizzo Aq luigi@iet.unipi.it ,
  37 as described on ACM Computer Communication Review, Jan.97 issue.
  38 Later it has been then modified to work at the ip and bridging
  39 level, integrated with the IPFW packet filter, and extended to
  40 support multiple queueing and scheduling policies.