Protection Against Dual Failures for Resilient Two Layer Networks: United States Patent 9973377
- ISBN-10
- ISBN-13
- 9798589175622
- Pages
- 26
- Language
- English
- Published
- 2021-01-03
- Author
- Victor Yu Liu
Description
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.
