Forwarding rules among lookup tables in a multi-stage packet processor
US11431626B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Dec 30, 2020 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | Dec 30, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/60
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Processing an ingress packet in a packet pipeline to determine a forwarding rule includes identifying a matching rule in each forwarding table in the pipeline. Prefix lengths of the respective matching rules are compared. The matching rule with the greatest prefix length serves as the basis for forwarding an egress packet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.