Switching system including a mask mechanism for altering the internal routing process
US6570845B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 1999 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | May 24, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5681
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A switching system receives a data cell from a set of n input ports for routing to one or more output ports in accordance with the contents of a bitmap value retrieved from the cell upon its receipt. The system has a module comprising a shared buffer for storing the cells which are to be routed and a mask mechanism with a mask register for altering the value of the bitmap before it is used for controlling the routing process. As a result of operation of the mask mechanism, a cell is either transported to an output port or discarded. Two switching systems are combined in first and second switch fabrics, each having a switch core and a set of switch core access layer (SCAL) elements. Each SCAL element respectively comprises a SCAL Receive element and a SCAL Xmit element for permitting access to input and output ports of one of the switching systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.