mailing list archives
Re: Latency generator?
From: "Kevin Oberman" <oberman () es net>
Date: Wed, 25 Jun 2003 09:59:23 -0700
From: "Temkin, David" <temkin () sig com>
Date: Wed, 25 Jun 2003 12:48:29 -0400
Sender: owner-nanog () merit edu
Does anyone know of any free, cheap, or potentially rentable latency
generators? Ideally I'd like something that just sits between two ethernet
devices to induce layer 2/3 latency in traffic, but am open to any
dummynet(4)? It's a standard part of FreeBSD and may be in other BSDs.
It's very configurable to generate delays, congestion like behavior
dummynet - traffic shaper, bandwidth manager and delay emulator
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.
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman () es net Phone: +1 510 486-8634