Pre-provisioning a light path setup
US7110356B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2001 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | Aug 12, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0295
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system and method of reserving node resources along a desired path through a communications network that can be used to reserve resources across a fault such as an unconnected node interface or a disconnected link. The resource reservation technique is performed on a communications system including a plurality of nodes interconnected by at least one path to form a ring communications network. A communications link is identified within the path such that at least one node is disposed on a first side of the link and at least one node is disposed on a second side of the link. The identified link may have a fault. Resources are then reserved on the nodes disposed on the first side of the link by accessing the nodes over the path in a first direction around the ring network. Next, resources are reserved on the nodes disposed on the second side of the link by accessing the nodes from the first side over the path in a second direction around the ring network, in which the second direction is opposite the first direction. The path is then established without reallocating the node reservations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.