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:
May. 31, 2011
Filed:
Jan. 27, 2009
Anil Thomas, Milpitas, CA (US);
Dipak Punnoran Koroth, San Jose, CA (US);
Mahesh Chakravarthy Vittal Viveganandhan, Sunnyvale, CA (US);
Jiang Zhu, Stanford, CA (US);
Anil Thomas, Milpitas, CA (US);
Dipak Punnoran Koroth, San Jose, CA (US);
Mahesh Chakravarthy Vittal Viveganandhan, Sunnyvale, CA (US);
Jiang Zhu, Stanford, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
Techniques are provided herein for failover streaming mechanisms. At a first device (e.g., a content router device) that is configured to interface with a plurality of streaming servers for real-time protocol packet streams, communications are configured with a client device and a first of the plurality of streaming servers associated with a streaming session from the first streaming server to the client device so that the first device receives client session control and session feedback messages associated with the streaming session and so that a packet stream associated with the streaming session transmitted by the first streaming server to the client device does not pass through the first device. The first device stores session state information comprising an address of the client device, streaming session identification information and data representing a current state of the streaming session at the client device derived from the client session control and session feedback messages. Upon detecting a failure of the first streaming server, the first device selects a second of the plurality of streaming servers for serving the streaming session previously served by the first streaming server, and then initiates a streaming session from the second streaming server to the client device in order to continue from a state of the streaming session previously served by the first streaming server prior to the failure without any indication at the client device of the switching from the first streaming server to the second streaming server.