Method of determining transit costs across autonomous systems
US7697439B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2005 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | Jun 11, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for determining a cumulative network layer reachability cost of traversing one or more autonomous network routing systems comprises receiving first network route information from an originating customer edge router, wherein the first network route information identifies a route in a customer network; determining a transit cost from the provider edge router to an endpoint associated with the originating customer edge router based upon a metric value received in a cost community attribute; repeating the determining step for each of one or more autonomous systems that lie in a path from the originating customer edge router to a destination customer edge router, to result in determining an accumulated transit costs across one or more autonomous systems; and determining, based at least in part upon the accumulated transit cost, a best path from the provider edge router to the endpoint associated with the originating customer edge router.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.