Graceful restart procedures for label switched paths with label stacks
US10680941B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2018 |
| Grant date | Jun 9, 2020 |
| Priority date | — |
| Expiry date | Jun 16, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L47/746
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In general, techniques described are for providing graceful restart procedures for network devices of label switched paths (LSPs) implemented with label stacks. For example, a restarting network device may include a processor coupled to a memory that executes software configured to: receive a path signaling message including a recovery object that defines a reverse path of the LSP from an egress network device of the LSP to the restarting network device, including at least an upstream label and a downstream label associated with the restarting network device; determine, based on the recovery object, the upstream label and the downstream label associated with the restarting network device; and instantiate a control plane state of the restarting network device based on the recovery object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.