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. 23, 2011
Filed:
Jan. 30, 2008
Lee Breslau, Basking Ridge, NJ (US);
Nicholas Duffield, Summit, NJ (US);
Yu Gu, Amherst, MA (US);
Subhabrata Sen, North Providence, NJ (US);
Lee Breslau, Basking Ridge, NJ (US);
Nicholas Duffield, Summit, NJ (US);
Yu Gu, Amherst, MA (US);
Subhabrata Sen, North Providence, NJ (US);
AT&T Intellectual Property I, L.P., Atlanta, GA (US);
Abstract
A method and apparatus for providing performance measurements on network tunnels in packet networks are disclosed. For example, the method establishes two tunnels between a first measurement host and a first router, and establishes a tunnel between the first router and a second measurement host. The method also establishes a multicast group having a plurality of members, and sends one or more packets addressed to the multicast group from the first measurement host. The method measures the frequencies of directly and/or indirectly received responses from the plurality of members of the multicast group, and provides a plurality of estimated values for a plurality of packet transmission rates from measurement of the frequencies for one or more of said tunnels.