Process for transporting a cell through a switching structure base on a single stage switch
US6480501B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1998 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Jun 19, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/455
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A process for transporting a data cell throughout a switch fabric having a centralized switching structure and a set of distributed, generally remotely located, Switch Core Access Layers (SCAL) permitting the attachment of the protocol adapters. Remotely with respect to the centralized switching structure, the data cell which is received from a telecommunications link is divided into k logical units (LUs) and additional bytes are introduced for permitting the reservation of a bitmap field that will be used for routing through the switch core. Every LU is coded in accordance with the 8B/10B coding process. Within the centralized switching structure, the k coded LUs are deserialized and the cell clock is obtained for each cell in order to reconstitute the data cell. In addition the routing byte reservations are filled with appropriate values (bit map) for the routing process within the switch by means of an access to an entry routing table. When the cell outputs the switching structure, a second access to a routing table permits the replacement of the previous bit map by new values in order to enhance multicast capabilities. The data cell is divided again in a set of k serialized log…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.