Efficient point-to-point and multi-point routing mechanism for programmable packet switching nodes in high speed data transmission networks
US5602841A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1995 |
| Grant date | Feb 11, 1997 |
| Priority date | — |
| Expiry date | Mar 15, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5642
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an efficient point-to-point and multi-points routing system and method for programmable data communication adapters in packet switching nodes of high speed networks. The general principles of this efficiency are the following: PA1 First, data packets are never copied, only packet pointers are copied for each destination: Space in Buffer Memory is saved, the number of instructions is significantly reduced improving the packet throughput (number of packets per seconds that the adapter is able to transmit). and the routing is independant of the packets length. PA1 Second, no overhead is generated by the multi-points mechanism in the real time procedures: the underrun/overrun problems on the ouputs are reduced and the efficiency of the adapter in term data throughput (bits per second) is significantly improved. PA1 Third, each output is processed independently by means of interrupts: lines are managed in real time and lines of different speed or protocol can be supported in parallel. PA1 Fourth, the release of the resources is entirely realized on a non priority mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.