Method and a device for routing traffic along an IGP shortcut path
US12107755B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2020 |
| Grant date | Oct 1, 2024 |
| Priority date | — |
| Expiry date | Nov 2, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/748
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method, a router and a software are provided for routing communication traffic along a path in a communication network, being an IGP shortcut. The method comprises: providing an IGP shortcut prefix to a routing entity and storing the IGP shortcut prefix in a Routing Information Base (RIB); associating a new flag with an LSP associated with the IGP shortcut prefix, wherein the new flag indicates whether that LSP can serve for conveying traffic when implementing MPLS connectivity; storing information that relates to the new flag at the RIB; identifying LSPs associated with respective IGP shortcut prefixes which qualify to operate as next hop routing paths' candidates, wherein the qualified LSPs are each associated with a flag indicating that the respective qualified LSP is MPLS reachable; selecting an LSP to be a next hop routing path, wherein the selection is made from among the qualified LSPs; and forwarding traffic towards its destination via the next hop LSP.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.