Designing BGP-based outbound traffic engineering techniques for stub ASes

Today, most multi-connected autonomous systems (AS) need to control the flow of their interdomain traffic for both performance and economical reasons. This is usually done by manually tweaking the BGP configurations of the routers on an error-prone trialand-error basis. In this paper, we demonstrate that designing systematic BGP-based traffic engineering techniques for stub ASes are possible. Our approach to solve this traffic engineering problem is to allow the network operator to define objective functions on the interdomain traffic. Those objective functions are used by an optimization box placed inside the AS that controls the interdomain traffic by tuning the iBGP messages distributed inside the AS. We show that the utilization of an efficient evolutionary algorithm allows to both optimize the objective function and limit the number of iBGP messages. By keeping a lifetime on the tweaked routes, we also show that providing stability to the interdomain path followed by the traffic ...

• Type: Journal
• Year: 2004
• Where: CCR
• Authors: Steve Uhlig, Olivier Bonaventure
• Keywords: CCR 2004, Interdomain Traffic, Objective Function, Stub Ases