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. 31, 2012
Filed:
Apr. 24, 2008
Paul Blum, Highlands Ranch, CO (US);
Jean Meloche, Madison, NJ (US);
Kenneth Pearl, Braintree, MA (US);
Anton Rager, Larkspur, CO (US);
Balaji Sathyanarayana Rao, Somerville, NJ (US);
John R. Tuck, Jr., Berkeley Heights, NJ (US);
Paul Blum, Highlands Ranch, CO (US);
Jean Meloche, Madison, NJ (US);
Kenneth Pearl, Braintree, MA (US);
Anton Rager, Larkspur, CO (US);
Balaji Sathyanarayana Rao, Somerville, NJ (US);
John R. Tuck, Jr., Berkeley Heights, NJ (US);
Avaya Inc., Basking Ridge, NJ (US);
Abstract
One or more network elements that modify type of service values in a network are detected by sending route tracing messages having increasing time-to-live values and a designated type of service value from a first network element to a second network element. Type of service values are monitored in respective time exceeded messages received from respective network elements on a given network path between the first network element and the second network element responsive to the route tracing messages. At least a particular one of the network elements on the given network path that has made a modification in type of service value relative to the designated type of service value is identified, based on the monitored type of service values in the respective time exceeded messages.