Method for facilitating forwarding of data packets through a node of a data transfer network using multiple types of forwarding tables
US7539772B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2007 |
| Grant date | May 26, 2009 |
| Priority date | — |
| Expiry date | Aug 20, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/54
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method is provided for reducing size of memory required for a switching node's forwarding table by employing forwarding tables of different types to map received data packets addressed to downstream nodes and upstream nodes to appropriate output ports of the switching node. The method includes receiving a data packet at a data transfer node of a network and selecting a forwarding table from multiple types of forwarding tables accessible by the node based on an attribute associated with the received data packet, and mapping the data packet to an output port of the node utilizing the forwarding table selected from the multiple types of forwarding tables based on the attribute associated with the packet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.