Pipelined evaluations for algorithmic forwarding route lookup
US10135734B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2015 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Dec 7, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/748
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Packet processors or other devices with packet processing pipelines may implement pipelined evaluations of algorithmic forwarding route lookups. As network packets are received, a destination address for the network packets may be divided into different possible prefix lengths and corresponding entries in a routing table for the different possible prefix lengths may be determined according to a hash scheme for the routing table. The entry values may be read from the routing table and evaluated at subsequent stages to identify the entry with a longest prefix match with respect to the destination address for the network packet. The routing table may include entries for different types of network packets and may be configured to include virtual routing and forwarding for network packets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.