Multi-service segmentation and reassembly device that maintains only one reassembly context per active output port
US7342942B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2001 |
| Grant date | Mar 11, 2008 |
| Priority date | — |
| Expiry date | Dec 17, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5669
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A multi-service segmentation and reassembly (MS-SAR) integrated circuit is disposed on a line card in a router or switch. The MS-SAR can operate in an ingress mode so that it receives packet and/or cell format data and forwards that data to either a packet-based or a cell-based switch fabric. The MS-SAR can also operate in an egress mode so that it receives data from either a packet-based or a cell-based switch fabric and outputs that data in packet and/or cell format. The MS-SAR has a data path through which many flows of different traffic types are processed simultaneously. Each flow is processed by functional blocks along the data path in accordance with one of several application types, the application type for a flow being predetermined by the host processor of the router or switch. Segmentation, reassembly and partitioning techniques are disclosed that reduce costs and facilitate high-speed operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.