Flow-Aware Multi-Topology Adaptive Routing (FAMTAR) is a new approach to multipath and adaptive routing in IP networks which enables automatic use of alternative paths when the primary one becomes congested. It provides more efficient network resource utilization and higher quality of transmission compared to standard IP routing. However, thus far it has only been evaluated through simulations. In this paper we share our experiences from building a real-time FAMTAR router and present results of its tests in a physical network. The results are in line with those obtained previously through simulations and they open the way to implementation of a production grade FAMTAR router.
Multiprotocol Label Switching (MPLS) @cite_11 is the most widely deployed example of such a technique. MPLS allows operators to manually create paths (tunnels) and assign certain flows transmissions to those paths. This approach is currently widely used, and it works. However, there are several drawbacks. Firstly, the operations are not automatic and require human intervention. Secondly, in large and complex networks the existence of multiple paths and many criteria, conditions, parameters, etc., creates havoc. Currently, many major operators have their MPLS nodes configured with such complexity that they are almost afraid to change anything, for fear of impairing the network's operation.
@cite_11
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This document specifies the architecture for Multiprotocol Label Switching (MPLS). [STANDARDS-TRACK]