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:
Feb. 07, 2012
Filed:
Oct. 29, 2008
Zahid Hussain, San Jose, CA (US);
Samir Jain, Cupertino, CA (US);
Naveed Alam, Cupertino, CA (US);
Joseph Cheng, Sunnyvale, CA (US);
Greg Lockwood, Redwood City, CA (US);
Tim Millet, Mountain View, CA (US);
Zahid Hussain, San Jose, CA (US);
Samir Jain, Cupertino, CA (US);
Naveed Alam, Cupertino, CA (US);
Joseph Cheng, Sunnyvale, CA (US);
Greg Lockwood, Redwood City, CA (US);
Tim Millet, Mountain View, CA (US);
Google Inc., Mountain View, CA (US);
Abstract
Methods and systems are provided for routing traffic through a virtual router-based network switch. According to one embodiment, a flow data structure is established that identifies current packet flows associated with multiple virtual routers in the virtual router-based network device. When an incoming packet is received by the virtual router-based network device, it is then determined whether the incoming packet is associated with a current packet flow by accessing the flow data structure based on a header associated with the incoming packet. If it is determined that the incoming packet is associated with the current packet flow, then the incoming packet is hardware forwarded via a network interface of the virtual router-based network device without intervention by a processor of the virtual router-based network device, otherwise the incoming packet is forwarded to software on the processor for flow learning.