Control and data plane synchronization during Make Before Break operations in Multiprotocol Label Switching
US10862797B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 2, 2019 |
| Grant date | Dec 8, 2020 |
| Priority date | — |
| Expiry date | Jan 2, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L41/046
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methods include, in a first Label Edge Router (LER) in a Multiprotocol Label Switching (MPLS) network, creating a primary tunnel with a second LER; creating a Make Before Break (MBB) tunnel with the second LER for the primary tunnel; prior to switching to the MBB tunnel from the primary tunnel, sending an MPLS request to the second LER via the MBB tunnel and receiving an MPLS response from the second LER via the MBB tunnel indicating successfully creation of the MBB tunnel; switching to the MBB tunnel responsive to the successfully creation of the MBB tunnel; and, prior to tearing down the primary tunnel, checking statistics of the MBB tunnel to ensure traffic has moved to the MBB tunnel from the primary tunnel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.