Multicast fast reroute at access devices with controller implemented multicast control plane
US10243841B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2016 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | Aug 19, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/128
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a method includes computing at a controller, a primary path and a backup path for transmittal of multicast data from service nodes in communication with the controller and a multicast source to access nodes in communication with multicast receivers, and transmitting from the controller, information for the primary path and the backup path to the access nodes for use by the access nodes in receiving the multicast data on the primary path and the backup path, and switching transmittal of the multicast data to the multicast receivers from the primary path to the backup path upon identifying a failure in the primary path to provide fast reroute at the access nodes. A multicast control plane runs in the controller without operating in the access nodes. An apparatus is also disclosed herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.