Summarization in a multi-domain network

摘要

A multi-domain network comprises domains of different network technology types. A network domain comprises a plurality of network nodes connected by links and comprising border nodes which connect with other network domains. In a first domain (AS A) of a first technology type, a method comprises determining an intra-domain topology of the nodes and links of the domain by collecting values of at least one network topology parameter of the first technology type. The method determines a summarized intra-domain topology of paths between border nodes of the domain which is described using values of at least one summarized network topology parameter. Values of the summarized network topology parameter are derived from the values of the network topology parameter of the intra-domain topology of the first technology type. The summarized network topology parameter is part of a common set of network topology parameters for advertising between domains comprising apparatus of different technology types. A domain can comprise multiple layers of different technology type.

主权项

1. A method of generating network topology parameters for a first network domain in a multi-domain network, the first network domain comprising a plurality of network nodes connected by links and comprising border nodes which connect with other network domains, the first network domain comprising apparatus of a first network technology type, the method comprising, at a control entity of the first network domain:
determining an intra-domain topology of the nodes and links of the first network domain by collecting values of at least one network topology parameter of the first technology type; and determining a summarised intra-domain topology of paths between border nodes of the first network domain which is described using values of at least one summarised network topology parameter, wherein values of the summarised network topology parameter are derived from the values of the network topology parameter of the intra-domain topology of the first technology type and wherein the summarised network topology parameter is part of a common set of network topology parameters for advertising between domains comprising apparatus of different technology types, wherein the different technology types comprise packet-switched network technology and wavelength-switched optical network technology, wherein the summarized intra-domain topology of paths comprises a plurality of virtual links between a pair of border nodes, each virtual link representing a plurality of possible intra-domain paths between the pair of border nodes, each virtual link being described by a different value or value range of the summarized network topology parameter, and wherein the common set of network topology parameters are expressed in units that are the same irrespective of technology type.