Network device configured to track multicast receivers
US9473315B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2014 |
| Grant date | Oct 18, 2016 |
| Priority date | — |
| Expiry date | Oct 18, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/48
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A first network device adapted for communication with one or more other network devices is configured to originate a first route identifying a tunnel for carrying traffic for a multicast, to originate a second route specifying a leaf information requirement for the multicast but not identifying a tunnel for carrying traffic for the multicast, and to track a plurality of receivers of the multicast based at least in part on leaf information received from the multicast receivers responsive to the specified leaf information requirement of the second route. The first route may comprise an inclusive route having a tunnel attribute that identifies an inclusive tunnel for the multicast and the second route may comprise a selective route having a tunnel attribute configured to indicate that it carries no tunnel information. Multicast traffic can be switched between an inclusive tunnel and a selective tunnel responsive to the multicast receiver tracking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.