Protection against dual failures for resilient two layer networks
US9973377B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2015 |
| Grant date | May 15, 2018 |
| Priority date | — |
| Expiry date | May 5, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/1283
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method comprising identifying a physical ring in a physical layer of a network according to a logical ring in a logical layer of the network, wherein the logical ring is formed from a plurality of nodes interconnected by a plurality of logical links, and wherein the physical ring is formed from at least the plurality of nodes interconnected by a first plurality of physical links, computing a plurality of cross cord paths across the physical ring, and mapping the logical ring onto the physical layer to provide dual physical link failure survivability by determining primary paths and secondary paths for the plurality of logical links over the physical ring and the plurality of cross cord paths such that a secondary path of a first of the plurality of logical links is non-overlapping with a primary path of a second of the plurality of logical links.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.