Triggering PIM assert re-election to honor network configuration changes
US10057121B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2015 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | Mar 3, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/20
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Exemplary systems, methods, apparatuses, and computer-readable media are provided for enabling PIM Assert re-election to be triggered to honor network configuration changes. Upon receipt of a PIM Join message for a multicast group, a router can enter a “Join” state and start an Expiry-Timer. Thereafter, the router may determine that it is an Assert-Loser for the multicast group via a PIM Assert election mechanism. At the expiration of the Expiry-Timer, instead of transitioning to a “No-Info” state and removing state for the multicast group, the router can, due to its status as the Assert-Loser for the multicast group, remain in the “Join” state and re-start the Expiry-Timer. Upon a later configuration change, the router can now automatically trigger a PIM Assert re-election, which can lead to the router potentially becoming the Assert-Winner without requiring a manual, traffic-disrupting intervention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.