Enhanced internet packet routing lookup
US6512766B2 · kind B2 · utility
16Cited by
231References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 22, 1997 |
| Grant date | Jan 28, 2003 |
| Priority date | — |
| Expiry date | Aug 22, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/22
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The invention provides a method and system for routing information lookup for packets using routing protocols such as IP or IP multicast (IGMP), or MPLS (multiprotocol label switching, also known as tag switching or label switching) or MPLS multicast, in which both the destination address and the length of that destination address are matched using a lookup table having separate entries for selected addresses and their lengths, which can be accessed in parallel for multiple representations of destination addresses, and in which the input interface associated with the packet is included in the information used for matching.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.