Method and apparatus for routing cells having different formats among service modules of a switch platform
US6483850B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1998 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Jun 3, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/606
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for routing cells having different formats among service modules of a switch platform are provided. The cells are routed among service modules of a switch by a cell bus controller (CBC) using a first memory to convert an address having a first format into an address having a second format. The address having the first format is received in a header of a cell, and the address format comprises a 17-bit cell bus logical connection number of a destination port. The address having the second format is a 16-bit UDF used by a switch of the switch platform. The address having the first format is used to form a third address that is used to access the first memory. The data located at the third address of the first memory is a 16-bit UDF used to address the switch. A second memory is used to convert an address having the second format into an address having the first format. The address having the second format is used as a fourth address to access the second memory. The data located at the fourth address of the second memory is a 32-bit cell bus header that addresses a destination port. The destination port is at least one service module of the switch platform. The f…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.