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:
Aug. 06, 2013
Filed:
Aug. 04, 2011
Richard H. Blanchette, Hopkinton, MA (US);
Martin Bouchard, Montréal, CA;
Anil Gupta, Shrewsbury, MA (US);
Yannick Koehler, Montréal, CA;
Gilbert Moineau, Lachine, CA;
Fréderic D. Mouveaux, Laval, CA;
Roger D. Sands, Princeton, MA (US);
Pierre Trudeau, Lorraine, CA;
Richard H. Blanchette, Hopkinton, MA (US);
Martin Bouchard, Montréal, CA;
Anil Gupta, Shrewsbury, MA (US);
Yannick Koehler, Montréal, CA;
Gilbert Moineau, Lachine, CA;
Fréderic D. Mouveaux, Laval, CA;
Roger D. Sands, Princeton, MA (US);
Pierre Trudeau, Lorraine, CA;
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
To enable a network apparatus to detect L3 roaming users and to take appropriate forwarding actions, L3 knowledge is introduced inside an L2 bridge forwarding table in the network apparatus. As a client moves from a subnet associated with a first network element to a subnet associated with the network apparatus, a determination is made regarding whether the client is roaming by evaluating a source IP address within a L3 packet header within a first frame received at the network apparatus. If, as a result of the evaluating step, it is determined that the client is roaming, the L2 bridge forwarding table is configured to include a source MAC address of the client together with information identifying a destination interface for use in directing client data traffic back towards the subnet associated with the first network element.