Enhancements to PIM fast re-route with downstream notification packets
US8638659B2 · kind B2 · utility
4Cited by
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26Claims
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Key dates
| Filing date | Jun 1, 2012 |
| Grant date | Jan 28, 2014 |
| Priority date | — |
| Expiry date | Jul 19, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/16
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A failure detection mechanism provides enhancements to PIM-SM based fast re-route techniques. A network node upon detecting a loss of connection determines whether it can re-route multicast data traffic. If the network node does not have a failure-free secondary path, it can originate a notification packet and send it to the downstream parts of a multicast tree. The notification packet can trigger one or more downstream nodes to switch-over to redundant secondary paths to re-route the multicast data traffic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.