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:
Dec. 08, 2009
Filed:
Jul. 09, 2002
Faizel Lakhani, Campbell, CA (US);
Gary Croke, Mountain View, CA (US);
Riad Hartani, Palo Alto, CA (US);
Bert Tanaka, Saratoga, CA (US);
Phillip Laverdiere, Shoreview, MN (US);
Faizel Lakhani, Campbell, CA (US);
Gary Croke, Mountain View, CA (US);
Riad Hartani, Palo Alto, CA (US);
Bert Tanaka, Saratoga, CA (US);
Phillip Laverdiere, Shoreview, MN (US);
Sable Networks, Inc., Santa Clara, CA (US);
Abstract
A mechanism is disclosed for enabling a plurality of logical routers to be implemented within a single physical router. The logical routers emulate the behavior of interconnected, standalone routers. For example, the logical routers may be made aware of the presence of other logical routers within the same physical router. The logical routers may also have internal 'links' to each other. In addition, the logical routers may send routing information to each other. Thus, to each other and to routers external to the single physical router, the logical routers appear as if they are interconnected standalone routers. The logical routers may be further endowed with an ability to determine whether the next hop for a set of information (e.g. a packet) is to a logical router within the same physical router or to an external router. The logical routers take advantage of this distinction to perform routing between logical routers more efficiently.