No description
Find a file
Toke Høiland-Jørgensen d9763bd7a0
babel: Add route metric smoothing
The Babel RTT extension employs metric smoothing to dampen route
oscillations in the face of varying RTT values between two peers[0].

This patch implements such dampening in Bird, roughly following the
implementation in babeld (i.e., using the same exponential function
definition). The main difference is that we calculate everything in the
native Bird microsecond time unit (and increase constants accordingly), and
that we split out the smoothed metric calculation in two function variants,
one that has no side effects and one that does.

  [0] https://arxiv.org/pdf/1403.3488.pdf

Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
2022-12-12 13:46:36 +08:00
client Client: Unknown command should return nonzero errorcode 2022-12-10 03:02:26 +01:00
conf Conf: Free stored old config before parsing new one 2022-11-09 21:54:45 +01:00
distro Pkg: Improve RPM package unit file 2022-03-11 15:47:00 +01:00
doc babel: Add route metric smoothing 2022-12-12 13:46:36 +08:00
filter Moved config-related allocations to config_pool and showing its size in memory usage 2022-11-01 16:38:24 +01:00
lib lib/timer: Add current_time_now() function for immediate timestamp 2022-12-12 13:46:35 +08:00
misc NEWS and version update 2022-12-11 17:28:14 +01:00
nest CLI: Fix for long-lived sessions during high loads 2022-12-10 17:32:42 +01:00
proto babel: Add route metric smoothing 2022-12-12 13:46:36 +08:00
sysdep NEWS and version update 2022-12-11 17:28:14 +01:00
test Revert "Reducing filter stack size to allow for lesser thread stack size" 2022-09-16 10:11:51 +02:00
tools Small improvement in directory test 2022-03-02 10:52:09 +01:00
.dir-locals.el BIRD coding conventions 2019-06-12 16:37:12 +02:00
.gitignore add apkg-powered upstream packaging for deb, rpm 2021-05-19 17:22:11 +02:00
.gitlab-ci.yml CI: Remove docker rebuild phase 2022-11-30 02:48:59 +01:00
aclocal.m4 Enable more threads for flto 2019-08-01 14:45:23 +02:00
bird-gdb.py Support for address family constants 2019-11-03 22:25:44 +01:00
bird.conf KRT: Fix IPv6 route learn 2018-02-06 16:08:45 +01:00
configure.ac Fix build variables for OpenBSD 2022-11-29 18:29:30 +01:00
INSTALL Doc: Detect SP/OpenSP automatically 2019-02-19 18:20:07 +01:00
Makefile.in Simplified the protocol hookup code in Makefiles 2022-08-18 22:07:30 +02:00
NEWS NEWS and version update 2022-12-11 17:28:14 +01:00
README Doc: README and INSTALL update 2019-01-03 17:26:52 +01:00

                       BIRD Internet Routing Daemon

                     Home page  http://bird.network.cz/
                  Mailing list  bird-users@network.cz

                (c) 1998--2008  Martin Mares <mj@ucw.cz>
                (c) 1998--2000  Pavel Machek <pavel@ucw.cz>
                (c) 1998--2008  Ondrej Filip <feela@network.cz>
                (c) 2009--2019  CZ.NIC z.s.p.o.

================================================================================

The BIRD project aims to develop a dynamic IP routing daemon with full support
of all modern routing protocols, easy to use configuration interface and
powerful route filtering language, primarily targeted on (but not limited to)
Linux and other UNIX-like systems and distributed under the GNU General
Public License.

What do we support
==================

	o  Both IPv4 and IPv6
	o  Multiple routing tables
	o  Border Gateway Protocol (BGPv4)
	o  Routing Information Protocol (RIPv2, RIPng)
	o  Open Shortest Path First protocol (OSPFv2, OSPFv3)
	o  Babel Routing Protocol (Babel)
	o  Bidirectional Forwarding Detection (BFD)
	o  IPv6 router advertisements
	o  Static routes
	o  Inter-table protocol
	o  Command-line interface allowing on-line control and inspection of
	   status of the daemon
	o  Soft reconfiguration, no need to use complex online commands to
	   change the configuration, just edit the configuration file and notify
	   BIRD to re-read it and it will smoothly switch itself to the new
	   configuration, not disturbing routing protocols unless they are
	   affected by the configuration changes
	o  Powerful language for route filtering, see doc/bird.conf.example
	o  Linux, FreeBSD, NetBSD and OpenBSD ports

How to install BIRD
===================

	o  From standard distribution package of your OS (recommended)
	o  From official binary packages for Debian and Red Hat Linux
	   ftp://bird.network.cz/pub/bird/debian/
	   ftp://bird.network.cz/pub/bird/redhat/
	o  From source code of the latest stable release version
	   ftp://bird.network.cz/pub/bird/
	o  From current development code in Git repository
	   https://gitlab.labs.nic.cz/labs/bird/

See the file INSTALL for information about installation from source code.

Documentation
=============

Online documentation is available at http://bird.network.cz/?get_doc or as HTML
files in the doc directory, you can install it by `make install-docs' and
rebuild it by `make docs', but you'll need SGMLtools and LaTeX to be installed
on your machine. You can also download a neatly formatted PDF version as
a separate archive (bird-doc-*.tar.gz) from ftp://bird.network.cz/pub/bird/

User support
============

If you want to help us debugging, enhancing and porting BIRD or just lurk
around to see what's going to develop, feel free to subscribe to the BIRD
users mailing list bird-users@network.cz, just send `subscribe' to
bird-request@network.cz. Bug reports, suggestions, feature requests and
code are welcome! We don't use gitlab issues for reporting, sorry.

Subscribe:	http://bird.network.cz/mailman/listinfo/bird-users/
Archive:	http://bird.network.cz/pipermail/bird-users/

Licence
=======

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

History
=======

BIRD development started as a student project at the Faculty of Math
and Physics, Charles University, Prague, Czech Republic under supervision
of RNDr. Libor Forst <forst@cuni.cz>. BIRD has been developed and supported
by CZ.NIC z.s.p.o. http://www.nic.cz/ since 2009.


Good Luck and enjoy the BIRD :)
						The BIRD Team