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. 18, 2014
Filed:
May. 28, 2010
Kavitha Kamarthy, Milpitas, CA (US);
Sheela D. Rowles, Cupertino, CA (US);
Dinesh Ranjit, San Jose, CA (US);
Tanya Roosta, Saratoga, CA (US);
Warren S. Wainner, Sterling, VA (US);
Kavitha Kamarthy, Milpitas, CA (US);
Sheela D. Rowles, Cupertino, CA (US);
Dinesh Ranjit, San Jose, CA (US);
Tanya Roosta, Saratoga, CA (US);
Warren S. Wainner, Sterling, VA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
Techniques are provided for determining freshness of control messages in a network. At a first device that is to enter into a secure communication session with a second device, timestamp information and time window size information are sent to the second device in a control message during a first exchange between a first device and a second device. At the first device, timestamp information and time window size information are obtained from a control message received from the second device by the first device during the first exchange. At the first device, the freshness of a control message is tested based on the timestamp information of the control message during a second exchange and the time window size information received from the second device during the first exchange.