Verifying packet tags in software defined networks
US10491513B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2017 |
| Grant date | Nov 26, 2019 |
| Priority date | — |
| Expiry date | Dec 10, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/036
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Examples relate to packet tagging in Software Defined Networks (SDN). In an example, at least one SDN switch of an SDN marks a packet passing through the SDN switch with a packet tag, wherein the packet tag comprises an identifier of the SDN switch and a digest of a set of network forwarding rules of the SDN switch. Some examples generate, by a verifier, a verifier tag comprising the identifier of the at least one SDN switch and the digest of the set of network forwarding rules of the at least one SDN switch obtained from a network rules table and a network topology table stored in the verifier. Some examples receive, at a particular network element and from a verifier of the SDN, a request for attestation of the packet. Some examples check, by a verification engine, the packet tag against the verifier tag.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.