Controlling protocol independent multicast (PIM) join/prune messages from a downstream PIM neighbor using a PIM join/prune response(s) from an upstream PIM neighbor
US11057235B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2020 |
| Grant date | Jul 6, 2021 |
| Priority date | — |
| Expiry date | Feb 13, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L47/34
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The potential problem of sending (or resending) PIM join/prune messages (referred to as “PIM join(s)”) too infrequently may be solved by: (a) sending a PIM join, including a unique message identifier value, to an upstream PIM peer; (b) responsive to sending the PIM join, (1) starting a quick refresh timer, and (2) starting a standard refresh timer, which is longer than the quick refresh timer; (c) responsive to a determination that the quick refresh timer expired, (1) resending the PIM join to the upstream PIM peer, and (2) restarting the quick refresh timer; (d) responsive to a determination that the standard refresh timer expired, (1) resending the PIM join message to the upstream PIM peer, and (2) restarting the standard refresh timer; (e) receiving a PIM join response from the upstream PIM peer, wherein the PIM join response includes a unique message identifier value; (f) responsive to receiving the PIM join response and determining that the unique message identifier value in the PIM join response matches the unique message identifier value in the PIM join/prune message, stopping the quick refresh timer. The potential problem of sending (or resending) PIM joins too frequently m…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.