Subject: altq-2.0 available
To: None <end2end-interest@ISI.EDU>
From: Kenjiro Cho <email@example.com>
Date: 10/01/1999 22:07:31
A new release of ALTQ is available from
ALTQ -- Version 2.0
October 1, 1999
This is a release of Alternate Queueing for BSD UNIX. ALTQ provides
queueing schemes required to realize resource-sharing and quality of
service. The ALTQ release is intended to be a flexible platform to
promote network research and gain field experience.
What's New since version 1.2:
- HFSC (Hierachical Fair Service Curve)
joint work with Hui Zhang's group at CMU.
efficient HFSC implementation using 64-bit operations
and raw Pentium TSC.
decoupling of real-time and link-sharing service curves
in order to support a variety of control.
- Blue (active queue management)
by Wu-chang Feng <firstname.lastname@example.org>
a daemon process that handles multiple queueing disciplines
using a single configuration file (/etc/altq.conf).
currently HFSC, CBQ and CDNR are supported.
altqd will replace cbqd in the near future.
The default config file for altqd is "/etc/altq.conf".
It is backward compatible with cbq.conf.
API for queue management.
full EF and AF support
traffic conditioning at input interfaces
framework for various conditioner elements
token bucket meter (for EF)
two-rate three color maker (for AF)
queueing at output interfaces:
RIO with 3 drop precedence values
RIO is integrated into CBQ or HFSC
- pvc bridging
ATM PVC bridging support.
allows ALTQ to work as a layer 2 device.
- FreeBSD-3.3R based. 2.2.8R and 3.2R are also supported.
- initial support of NetBSD-1.4/1.4.1
supported drivers are limited: en (pvc), fxp, vr, tl, (lo)
only i386 architecture is supported
Many new features have been added since version 1.2 so that the major
version number is bumped to 2.0. Most of the new features are still
under development and they are not fully tested.
Especially, the following items are missing in 2.0.
- more queueing disciplines should be handled by altqd
- altqstat (a stat program for multiple queueing disciplines)
- directory reorganization (get rid of *-tools dirs)
- rsvp support for HFSC
- more drivers for NetBSD
- cpu architecture other than i386
You can get the latest ALTQ release from