| 摘要 |
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 pluralit y (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 ar e extracted relating to the provider or providers of interest (12, 14), searching for the paths that contain the respective AS number for the provid er and/or providers of interest (12, 14). For each autonomous system (AS) the oriented sub-paths are extracted between each said autonomous system (AS) an d the provider or providers of interest (12, 14), identifying for each sub-pat h the relating number of hops. |
