System, method and apparatus for efficient management of S-PMSI resource in RSVP P2MP multicast networks
US9148364B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2013 |
| Grant date | Sep 29, 2015 |
| Priority date | — |
| Expiry date | Sep 30, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L47/724
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method, apparatus, and machine readable storage medium is for management of an Inclusive Provider Multicast Service Interface (I-PMSI) tunnel for forwarding traffic for a given multicast flow is disclosed. Aspects of the method comprise: upon expiry of an S-PMSI_DELAY interval timer, switching the multicast flow from the I-PMSI tunnel to a Selective Provider Multicast Service Interface (S-PMSI) tunnel only if the number of active Source-to-Leaf (S2L) paths exceeds a defined first threshold of a number of S2L paths and otherwise resetting the S-PMSI_DELAY interval timer. Other aspects provide for switching the multicast flow from the I-PMSI tunnel to the S-PMSI tunnel only if the number of PE nodes associated with the S-PMSI tunnel interested in the multicast flow does not exceed a defined a second threshold. Other aspects, in the case of the S-PMSI tunnel being active, further comprise steps of switching the multicast flow from the S-PMSI tunnel to the I-PMSI tunnel if the number of S2L paths on S-PMSI in bypass exceeds a third defined threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.