The increasing number of delay and loss critical services in packet networks require differentiated packet handling in the forwarding plane. Quality of Service (QoS) guarantees can be given for networks using resource reservation and admission control. However, such strategies require complex control plane extensions and might lead to higher operation expenditures. Network operators therefore often use over-provisioning and traffic differentiation to offer cheaper class of service quality in their internet protocol (IP) packet networks. Priority marking and forwarding of packetized data traffic can be realized mainly using different layer two and three mechanisms. The number of differentiated classes and their autonomous system (AS) internal implementation is at the operator’s choice. This paper proposes a concept of cross-domain and cross-layer priority signaling between packet switched networks to be used at the inter-AS peering points. It makes use of the Border Gateway Protocol (BGP) as the predominantly used routing protocol for AS peering communication. A new BGP-4 path attribute is used to convey the structured priority information. The new concept ensures that all receiving AS peers are consistently and comprehensively informed about the QoS handling within the IP prefix originating AS. Based on this information, all ASes can perform close QoS treatment approximation in a cross-domain and cross-layer manner. The approach is now work in progress at the IETF.

This document focuses on Class of Service Interconnection at inter- domain peering points. It specifies two new non-transitive attributes, which enable adjacent peers to signal Class of Service Capabilities and certain Class of Service admission control Parameters. The new "CoS Capability Attribute" is deliberately kept simple and denotes the general EF, AF Group and BE forwarding support across the advertising AS. The second "CoS Parameter Attribute" is of variable length and contains a more detailed description of available forwarding behaviours using the PHB id Code encoding. Each PHB id Code is associated with rate and size based traffic parameters, which will be applied in the ingress AS Border Router for admission control purposes to a given forwarding behaviour. The denoted Class of Service forwarding support is meant as the AS externally available (transit) Class of Service support.

Muchas compañías en nuestro país están transformando sus procesos, digitalizando sus productos y servicios para el alcance de los clientes, desde cualquier lugar y sin la necesidad de acercarse presencialmente a una oficina o local, sin embargo, el principal medio para el acceso a dichos servicios es Internet, además, la contratación de este servicio genera una dependencia directa con los proveedores de Telecomunicaciones. Hoy en Perú mas del 80% de la población tiene acceso a Internet, sin embargo, la experiencia en el uso no necesariamente es la mejor, ya que, se presentan muchas incidencias e interrupciones en el servicio, por ello las compañías se ven obligadas a establecer estrategias superlativas con el objetivo de mantener sus servicios o productos digitales siempre disponibles; dicho esto, este proyecto tiene como objetivo diseñar una arquitectura de Internet que, elimine esa dependencia de los proveedores de Telecomunicaciones y, utilizar esta capacidad con el objetivo de darle mayor flexibilidad a la red de datos, potenciar los niveles de continuidad, reducir costos y los más importante mantener los servicios siempre disponibles. La estrategia se basa en la operación de la red de datos, a través, de un sistema autónomo y prefijos IP públicos independientes, además utilizar el protocolo BGP para establecer las sesiones con los proveedores y no depender de ellos directamente, es decir la gestión de la capa perimetral ahora depende directamente de nuestra organización objetivo y no de los proveedores. / Many companies in our country are transforming their processes, digitizing their products and services for the reach of customers, from anywhere and without the need to go to the office, however, the necessary service to access is Internet, also, the hiring of this service generates a direct dependence with the Telecommunications providers. Today in Peru more than 80% of the population has access to the Internet, however, the experience in use is not necessarily the best, because there are many incidents and interruptions in the service, therefore companies are forced to establish superlative strategies in order to keep your digital services or products always available; Having said that, this project aims to design an Internet architecture that eliminates that dependence on telecommunications providers and uses this capacity in order to give greater flexibility to the data network, enhance continuity levels, reduce costs and the most important to keep the services always available. The strategy is based on the operation of the data network, through an autonomous system and independent public IP prefixes, in addition to using the BGP protocol to establish sessions with providers and not directly dependent on them, that is, management the edge layer is now directly up to our target organization and not the vendors. / Tesis