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- ifmetric 0.3
- Copyright 2003,2004 Lennart Poettering <mzvszrgevp (at) 0pointer (dot)
- de>
- * [1]License
- * [2]News
- * [3]Overview
- * [4]Status
- * [5]Documentation
- * [6]Requirements
- * [7]Installation
- * [8]Acknowledgements
- * [9]Download
- License
- 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.,
- 675 Mass Ave, Cambridge, MA 02139, USA.
- News
- Sat Jan 24 2004:
- [10]Version 0.3 release; fix compatibility with Linux 2.6
- Sat Aug 23 2003:
- [11]Version 0.2b release; URL fix
- Sat Aug 23 2003:
- [12]Version 0.2 released; changes include updated documentation, build
- system, contact information
- Mon Aug 4 2003:
- [13]Version 0.1 released
- Overview
- ifmetric is a Linux tool for setting the metrics of all IPv4 routes
- attached to a given network interface at once. This may be used to
- change the priority of routing IPv4 traffic over the interface. Lower
- metrics correlate with higher priorities.
- Status
- Version 0.3 is stable and feature complete.
- Documentation
- ifmetric's purpose
- Sometimes two network interfaces of different speeds with equal routes
- are available at the same time. (e.g. a laptop with both a wireless and
- a copper LAN card) The one with the greater througput should be
- preferred over the other. To achieve this, you may use the route's
- metric field. Routes with lower metrics are preferred over those with
- higher. Unfortunately many network configurators (like DHCP clients) do
- not support to set the metric for a route. ifmetric may be used to
- manipulate the metrics of routes a posteriori. The default metric for a
- route in the Linux kernel is 0, meaning the highest priority.
- ifmetric makes use of the NETLINK interface of the Linux kernel for
- manipulating the routes. Thus, ifmetric is compatible with complex
- routes created with iproute2.
- ifmetric doesn't modify the routes atomically. The is due to the
- NETLINK API. However, this should not hurt since ifmetric makes sure
- that not routes are ever lost while modifying them.
- Usage
- Have a look on the manual page [14]ifmetric(8).
- To give all other interfaces a higher priority than wlan0 simply run:
- ifmetric wlan0 1
- To reset the metrics of the routes attached to wlan0 simply run:
- ifmetric wlan0 0
- Requirements
- A newer Linux Kernel supporting the NETLINK API. (I think 2.2 is good
- enough).
- ifmetric was developed and tested on Debian GNU/Linux "testing" from
- August 2003, it should work on most other Linux distributions since it
- uses GNU autoconf for source code configuration.
- Installation
- As this package is made with the GNU autotools you should run
- ./configure inside the distribution directory for configuring the
- source tree. After that you should run make for compilation and make
- install (as root) for installation of ifmetric.
- The Linux kernel headers have to be available during compilation.
- Acknowledgements
- For the developers of iproute2 and zebra, since I looked on their
- source codes for learning how to use NETLINK.
- Download
- The newest release is always available from
- [15]http://0pointer.de/lennart/projects/ifmetric/
- The current release is [16]0.3
- If you want to be notified whenever I release a new version of this
- software use the subscription feature of [17]Freshmeat.
- __________________________________________________________________
- Lennart Poettering <mzvszrgevp (at) 0pointer (dot) de>, January 2004
- $Id: README.html.in 16 2004-01-23 23:20:25Z lennart $
- References
- 1. file:///opt/ti-processor-sdk-linux-am335x-evm-04.02.00.09/EVSE/GPL/ifmetric-0.3/doc/README.html#license
- 2. file:///opt/ti-processor-sdk-linux-am335x-evm-04.02.00.09/EVSE/GPL/ifmetric-0.3/doc/README.html#news
- 3. file:///opt/ti-processor-sdk-linux-am335x-evm-04.02.00.09/EVSE/GPL/ifmetric-0.3/doc/README.html#overview
- 4. file:///opt/ti-processor-sdk-linux-am335x-evm-04.02.00.09/EVSE/GPL/ifmetric-0.3/doc/README.html#status
- 5. file:///opt/ti-processor-sdk-linux-am335x-evm-04.02.00.09/EVSE/GPL/ifmetric-0.3/doc/README.html#documentation
- 6. file:///opt/ti-processor-sdk-linux-am335x-evm-04.02.00.09/EVSE/GPL/ifmetric-0.3/doc/README.html#requirements
- 7. file:///opt/ti-processor-sdk-linux-am335x-evm-04.02.00.09/EVSE/GPL/ifmetric-0.3/doc/README.html#installation
- 8. file:///opt/ti-processor-sdk-linux-am335x-evm-04.02.00.09/EVSE/GPL/ifmetric-0.3/doc/README.html#acks
- 9. file:///opt/ti-processor-sdk-linux-am335x-evm-04.02.00.09/EVSE/GPL/ifmetric-0.3/doc/README.html#download
- 10. http://0pointer.de/lennart/projects/ifmetric/ifmetric-0.3.tar.gz
- 11. http://0pointer.de/lennart/projects/ifmetric/ifmetric-0.2b.tar.gz
- 12. http://0pointer.de/lennart/projects/ifmetric/ifmetric-0.2.tar.gz
- 13. http://0pointer.de/lennart/projects/ifmetric/ifmetric-0.1.tar.gz
- 14. http://0pointer.de/lennart/projects/ifmetric/ifmetric.8.xml
- 15. http://0pointer.de/lennart/projects/ifmetric/
- 16. http://0pointer.de/lennart/projects/ifmetric/ifmetric-0.3.tar.gz
- 17. http://freshmeat.net/projects/ifmetric/
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