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:
Jan. 11, 2011
Filed:
Mar. 02, 2007
David D. Ward, Somerset, WI (US);
Earl Hardin Booth, Iii, Raleigh, NC (US);
Stefano Previdi, Rome, IT;
David D. Ward, Somerset, WI (US);
Earl Hardin Booth, III, Raleigh, NC (US);
Stefano Previdi, Rome, IT;
Cisco Technology, Inc., San Jose, CA (US);
Abstract
In one embodiment, software code in a respective computer system such as one or more data communication devices establishes multiple layer 2 network links between a first data communication device and a second data communication device. The first data communication device and the second data communication device include corresponding layer 3 interfaces enabling layer 3 network communications over each of the multiple layer 2 network links. The first and second data communication devices route traffic over one (e.g., a primary layer 2 link) of the multiple layer 2 network links using the layer 3 network communications. The private links are media independent. Upon detection of a failure associated with the primary layer 2 link, the data communication devices can automatically switch to sending traffic over a backup link of the multiple layer 2 network links without disrupting publicly advertised routing topology information.