Reverse path forwarding RPF check method and apparatus
US11997004B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2022 |
| Grant date | May 28, 2024 |
| Priority date | — |
| Expiry date | Jul 13, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/22
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A reverse path forwarding (RPF) check method includes, after receiving a multicast data packet from a head node, a tail node may obtain a multicast source address, a multicast group address and encapsulation information that are carried in the multicast data packet. The tail node obtains, based on the multicast source address, the multicast group address, and a first correspondence, a first identifier identifying an upstream multicast hop (UMH) node corresponding to the multicast data packet. The tail node may further obtain, based on the encapsulation information of the multicast data packet and a second correspondence, a second identifier identifying the head node corresponding to the multicast data packet. After obtaining the first identifier and the second identifier, the tail node may perform an RPF check based on the first identifier and the second identifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.