The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 06, 2012
Filed:
Jan. 24, 2006
Yi Yang, Morrisville, NC (US);
Alvaro E. Retana, Raleigh, NC (US);
Abhay Roy, Santa Clara, CA (US);
Alfred C. Lindem, Iii, Cary, NC (US);
Sina Mirtorabi, Santa Clara, CA (US);
Yi Yang, Morrisville, NC (US);
Alvaro E. Retana, Raleigh, NC (US);
Abhay Roy, Santa Clara, CA (US);
Alfred C. Lindem, III, Cary, NC (US);
Sina Mirtorabi, Santa Clara, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
The present invention elects an area border router from a plurality of potential area border routers by determining a full set of all areas attached to a router. A determination is made as to a full set of area pairs from the determined full set of areas. Routers are identified in a first area of the determined full set of areas that are reachable through an intra-area route in the first area, and routers are identified in a second area of the determined full set of areas that are reachable through an intra-area route in the second area. If there is a router that is unreachable through either an intra-area route in the first area or an intra-area route in the second area, then declare the first router to be an area border router, else new first and second areas are selected.