Link diversity and load balancing across digital and optical express-thru nodes
US8488963B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2008 |
| Grant date | Jul 16, 2013 |
| Priority date | — |
| Expiry date | Apr 11, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/62
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention provides a system, apparatus and method to compute a route through a network having both digital nodes and optical express-thru nodes. According to various embodiments of the invention, a network topology is generated in which both digital nodes, optical express-thru nodes, and optical nodes are identified, and both physical and virtual links between these nodes are mapped. The network connectivity is identified, at least in part, by broadcasting a local link state advertisement and optical carrier group binding information to neighboring nodes, which enables both physical and virtual neighboring nodes to be identified. Once a topology is generated, both physical and virtual link characteristics are analyzed to ensure link diversity for traffic through the network and load balancing functionality across the network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.