System and method for spare capacity allocation for shared backup path protection for dual link failures using successive survivable routing
US9143398B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 27, 2012 |
| Grant date | Sep 22, 2015 |
| Priority date | — |
| Expiry date | Sep 13, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/28
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus are provided for enabling spare capacity allocation (SCA) in a network for protecting against dual link failures using a successive survivable routing (SSR) algorithm that has better scalability and shorter computation time than other techniques. An embodiment method implemented by an apparatus includes computing the SCA for a plurality of flows in the network for a plurality of primary backup paths and a plurality of secondary backup paths corresponding to a plurality of working paths for the flows using a SSR algorithm. Another embodiment method includes computing the SCA for each of a plurality of flows in the network for a plurality of primary backup paths and a plurality of secondary backup paths corresponding to a plurality of working paths for the flows using a SSR algorithm, and aggregating the computed SCA for the primary backup paths and the secondary backup paths for all the flows.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.