41 lines
1.2 KiB
Groff
41 lines
1.2 KiB
Groff
|
.\"
|
||
|
|
.\" $FreeBSD: /repoman/r/ncvs/src/share/man/man4/dummynet.4,v 1.4.2.12 2002/11/18 21:51:16 luigi Exp $
|
||
|
|
.\"
|
||
|
|
.Dd October 28, 2002
|
||
|
|
.Dt DUMMYNET 4
|
||
|
|
.Os Darwin
|
||
|
|
.Sh NAME
|
||
|
|
.Nm dummynet
|
||
|
|
.Nd traffic shaper, bandwidth manager and delay emulator
|
||
|
|
.Sh DESCRIPTION
|
||
|
|
.Em dummynet
|
||
|
|
is a system facility that permits the control of traffic
|
||
|
|
going through the various network interfaces, by applying bandwidth
|
||
|
|
and queue size limitations, implementing different scheduling and queue
|
||
|
|
management policies, and emulating delays and losses.
|
||
|
|
.Pp
|
||
|
|
The user interface for
|
||
|
|
.Em dummynet
|
||
|
|
is implemented by the
|
||
|
|
.Nm dnctl
|
||
|
|
program, so the reader is referred to the
|
||
|
|
.Xr dnctl 8
|
||
|
|
manpage for a complete description of the capabilities of
|
||
|
|
.Nm
|
||
|
|
and on how to use it.
|
||
|
|
.Sh SEE ALSO
|
||
|
|
.Xr dnctl 8 ,
|
||
|
|
.Xr setsockopt 2 ,
|
||
|
|
.Xr bridge 4 ,
|
||
|
|
.Xr ip 4 ,
|
||
|
|
.Xr sysctl 8
|
||
|
|
.Sh HISTORY
|
||
|
|
.Nm
|
||
|
|
was initially implemented as a testing tool for TCP congestion control
|
||
|
|
by
|
||
|
|
.An Luigi Rizzo Aq luigi@iet.unipi.it ,
|
||
|
|
as described on ACM Computer Communication Review, Jan.97 issue.
|
||
|
|
Later it has been then modified to work at the ip and bridging
|
||
|
|
level, integrated with the IPFW packet filter, and extended to
|
||
|
|
support multiple queueing and scheduling policies.
|