A method and a system for performing connectivity...

H - Electricity – 04 – L

Patent

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H04L 12/56 (2006.01)

Patent

CA 2497178

For the benefit of a reference ISP (10) having a number of users (C), connectivity evaluations on a data communication network are performed in relation to one or more ISPs of interest (12, 14). Upon selecting a plurality (T) of autonomous systems (AS) capable of forming a traffic source and/or destination for the users (C) of the reference provider (10), tables of the BGP type (BGP1, ..., BGPm) are provided containing information on the paths available on the network for routing the traffic with regard to the above- mentioned autonomous systems (AS). From said tables the paths of BGP type are extracted relating to the provider or providers of interest (12, 14), searching for the paths that contain the respective AS number for the provider and/or providers of interest (12, 14). For each autonomous system (AS) the oriented sub-paths are extracted between each said autonomous system (AS) and the provider or providers of interest (12, 14), identifying for each sub-path the relating number of hops.

Aux fins de l'invention, pour le bénéfice d'un prestataire de services Internet de référence (10) disposant d'un certain nombre d'utilisateurs (C), on conduit des évaluations de connectivité sur réseau de transmission de données en relation avec un ou plusieurs prestataires de services Internet considérés (12, 14). Au moment de la sélection d'une pluralité (T) de systèmes autonomes (AS) capables de constituer une source et/ou une destination de trafic pour les utilisateurs (C) du prestataire de référence (10), différentes tables du type BGP (BGP1, ..., BGPm) sont fournies. Ces tables contiennent une information relative aux trajets disponibles sur le réseau pour l'acheminement du trafic par rapport aux systèmes autonomes (AS) susmentionnés. On extrait des tables en question les trajets de type BGP, par rapport avec le ou les prestataires considérés (12, 14), à la recherche des trajets qui comportent le nombre de systèmes AS correspondant à ce(s) prestataire(s) (12, 14). Pour chaque système AS, les sous-trajets orientés sont extraits entre les différents systèmes AS et le ou les prestataires considérés (12, 14), ce qui permet d'identifier le nombre correspondant de sauts pour chaque sous-trajet.

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