Manual Reference Pages - DUMMYNET (4)
- traffic shaper, bandwidth manager and delay emulator
system facility 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.
The user interface for
is implemented by the
utility, so please refer to the
manpage for a complete description of the
capabilities and how to use it.
The following options in the kernel configuration file are related to
enable ipfirewall (required for
enable firewall output
limit firewall output
set the timer granularity
Generally, the following options are required:
options HZ=1000 # strongly recommended
Additionally, one may want to increase the number
of mbuf clusters (used to store network packets) according to the
sum of the bandwidth-delay products and queue sizes of all configured
was initially implemented as a testing tool for
congestion control by
.An Luigi Rizzo Aq firstname.lastname@example.org ,
as described on ACM Computer Communication Review, Jan.97 issue.
Later it has been modified to work at the
and bridging levels, integrated with the
packet filter, and extended to
support multiple queueing and scheduling policies.
Visit the GSP FreeBSD Man Page Interface.
Output converted with manServer 1.07.