Invention Grant
- Patent Title: End-to end inter-domain routing
- Patent Title (中): 端到端的域间路由
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Application No.: US12933705Application Date: 2008-03-28
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Publication No.: US08559334B2Publication Date: 2013-10-15
- Inventor: Paola Iovanna , Cristiano Zema
- Applicant: Paola Iovanna , Cristiano Zema
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget L M Ericsson (publ)
- Current Assignee: Telefonaktiebolaget L M Ericsson (publ)
- Current Assignee Address: SE Stockholm
- International Application: PCT/EP2008/053772 WO 20080328
- International Announcement: WO2009/118050 WO 20091001
- Main IPC: H04J9/00
- IPC: H04J9/00

Abstract:
According to a first aspect of the present invention there is provided a method of constructing an end-to-end routing path across multiple packet switched domains. The method comprises generating a domains topology identifying all possible domains, the border elements of those domains and the inter-domain links. When a request is received for computation of a path from a source entity in a first domain to a destination entity in a second domain, all domains and inter-domain links that cannot or are unlikely to feature in the requested path are removed from the domains topology. Candidate intra-domain paths for each remaining domain are then computed, with each candidate intra-domain path being mapped to a logical link defined by its two ends, at least one end being a border element and the other being a border element or the source or destination entity. Attributes for each logical link are determined, together with attributes of the remaining inter-domain links. A virtual network topology is generated by combining the logical links and their associated attributes with the remaining inter-domain links and their associated attributes. This allows a best end-to-end route to be determined by analyzing the virtual network topology.
Public/Granted literature
- US20110019674A1 END-TO-END INTER-DOMAIN ROUTING Public/Granted day:2011-01-27
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