| | 1 | .\" |
| | 2 | .\" $FreeBSD: /repoman/r/ncvs/src/share/man/man4/dummynet.4,v 1.4.2.12 2002/11/18 21:51:16 luigi Exp $ |
| | 3 | .\" |
| | 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. |
projects / apple / xnu.git / blame_incremental