Arrangement in a router for establishing multicast group hierarchy and coalescence
US7519733B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 2004 |
| Grant date | Apr 14, 2009 |
| Priority date | — |
| Expiry date | Dec 28, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/48
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Routers of a content network include routing entries that specify aggregation levels, enabling the routers to establish a tree-based topology within an aggregation realm for distribution of broadcast packets. Each router is configured to have a prescribed aggregation level within the aggregation realm, and identify a network-directed broadcast packet based on detecting a prescribed pluricast code at a corresponding prescribed prefix location relative to the prescribed aggregation level. Each router also is configured for storing a registration request within its routing entries, and propagating the registration request to other routers within the aggregation realm. Each registration request includes a bit mask according to one of the prescribed aggregation levels. Hence, client-based registration requests can be propagated throughout the aggregation realm for rules-based coalescence of subscriber groups throughout the aggregation realm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.