A Concept of Inter-AS Priority Signaling using BGP Attributes

Presents a collection of slides from the author\´s conference presentation. The proposed approach enables a general OoS based forwarding which allows for informed routing and marking decisions. It is optimized for ease of deployment and adopted to the current poor inter-domain forwarding model. The concept aims for a consistent and widely adopted QoS approximation, which encompasses cross-layer and cross-domain traffic class handling from L1 to at least L3 as generally offered OoS treatment. The concept incorporates a confidentiality option that allows operators the distinction between an secluded internal and the advertised external Class Set. More sophisticated QoS concepts are not prohibited and will always exist, which results in future "better quality islands/path".