Selective rule management based on traffic visibility in a tunnel
US10038627B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2017 |
| Grant date | Jul 31, 2018 |
| Priority date | — |
| Expiry date | Apr 27, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/745
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
One embodiment of the present invention provides a switch. The switch includes a storage device, a rule management module, an inner packet module, and a packet processor. During operation, the rule management module obtains a rule associated with a data flow within tunnel encapsulation of a tunnel. This rule indicates how the flow is to be processed at the switch. The rule management module then applies an initial rule to a respective line card of the switch. The initial rule is derived from a virtual network identifier, which is associated with the tunnel, of the obtained rule. The inner packet module determines that a first inner packet, which is encapsulated with a first encapsulation header, belongs to the flow without decapsulating the first encapsulation header. The rule management module applies the obtained rule to a line card associated with an ingress port of the encapsulated first inner packet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.