Poison-path routing policy
US10015081B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 29, 2016 |
| Grant date | Jul 3, 2018 |
| Priority date | — |
| Expiry date | Dec 9, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2463/145
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In one embodiment a system, method, and related apparatus are described for a router which receives notice of a route including a hijacked prefix having a hijacked prefix netmask length, searches a set of routes with equal or shorter netmask lengths that cover the hijacked prefix in order to find at least one route which has no autonomous system (AS) in common with the particular route comprising the hijacked prefix, if a specific route is found with a netmask length equal to or shorter than the hijacked prefix netmask length, then the specific route which has been found is a determined alternative route, extracts the particular route comprising the hijacked prefix from the specific route if said specific route has a netmask length covering a larger address range than the hijacked prefix netmask length, inserts the determined alternative route in a routing table, and modifies attributes of the determined alternative route in the routing table according to the determined alternative route. Related systems, methods, and apparatus are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.