libTFO is a flow offloading decision engine designed for switch controllers. While providing flow-based traffic statistics to libTFO, controllers may use libTFO to decide which FIB entries to install into the FIB of the fast forwarding plane, and which entries to handle in a reactive way or through an alternative (slower, cheaper) forwarding path. The definition of a flow is entirely up to the controller, as well as the actions that are supposed to be performed on packets of a flow. Also, libTFO does not directly communicate with either forwarding plane, which makes it effectively technology independent.

The algorithm implemented by libTFO is based on the following research paper:

Nadi Sarrar, Steve Uhlig, Anja Feldmann, Rob Sherwood, Xin Huang. Leveraging Zipf's Law for Traffic Offloading. ACM SIGCOMM Computer Communications Review (CCR). January 2012.

Please visit http://www.fibium.org/ for downloads and updates.

Author:

Nadi Sarrar <nadi@net.t-labs.tu-berlin.de>

LICENSE

libTFO, a flow offloading decision engine designed for switch controllers.

Copyright (C) 2010, 2011 Nadi Sarrar <nadi@net.t-labs.tu-berlin.de>

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 3 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, see <http://www.gnu.org/licenses/>.