System and method for router data distribution
US7483433B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2001 |
| Grant date | Jan 27, 2009 |
| Priority date | — |
| Expiry date | Jun 1, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L47/22
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Employing an asymmetric protocol, multiple sources reliably broadcast dynamically changing routing tables incrementally across multiple consumers from a single distributor. Each of multiple sources sends current tables to the distributor using a snapshot mechanism. Messages are buffered, segmented, paced by timers, and broadcast to the consumers repetitively at the distributor. Negative acknowledgments from the consumer request missing messages from the distributor after receipt of a keepalive message from the distributor. The distributor marks the missing messages and retransmits replacements from a history buffer only after firing of a resend timer. A unique Session ID included in all messages originating from each particular source facilitates reliable table distribution from multiple sources to multiple consumers via a single distributor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.