Re-optimization of loosely routed P2MP-TE sub-trees
US8798050B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2012 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | Jan 18, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/22
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In one embodiment, for a point to multipoint label switched path, an intermediate node receives a re-evaluation request from a head-end node for at least one routing path having a destination in a loosely routed network for a single destination or for a plurality of destinations in the label switched path forming tree or sub-tree. In response to the re-evaluation request, the intermediate node determines an availability for a remerge-free preferred path for the destination(s), which includes at least one loosely routed next hop, and the intermediate node transmits a preferred path available message to the head-end node based on the determined availability of the remerge-free preferred path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.