Scheme for interlocking line card to an address recognition engine to support plurality of routing and bridging protocols by using network information look-up database
US5524254A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1994 |
| Grant date | Jun 4, 1996 |
| Priority date | — |
| Expiry date | Jul 1, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2101/622
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention provides an interlock scheme for use between a line card and an address recognition apparatus. The interlock scheme reduces the total number of read/write operations over a backplane bus coupling the line card to the address recognition apparatus required to complete a request/response transfer. Thus, the line card and address recognition apparatus are able to perform a large amount of request/response transfers with a high level of system efficiency. Generally, the interlocking scheme according to the present invention merges each ownership information storage location into the location of the request/response memory utilized to store the corresponding request/response pair to reduce data transfer traffic over the backplane bus. According to another feature of the interlock scheme of the present invention, each of the line card and the address recognition engine includes a table for storing information relating to a plurality of database specifiers. Each of the database specifiers contains control information for the traversal of a lookup database used by the address recognition apparatus. At the time the processor of a line card generates a request for the a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.