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:
Oct. 13, 2009
Filed:
May. 15, 2003
Russell Gardo, Raleigh, NC (US);
Praveen Bhagwatula, Rohnert Park, CA (US);
Jimmy Ervin, Raleigh, NC (US);
Charles Allen Carriker, Cary, NC (US);
James Scott Alexander, Raleigh, NC (US);
Russell Gardo, Raleigh, NC (US);
Praveen Bhagwatula, Rohnert Park, CA (US);
Jimmy Ervin, Raleigh, NC (US);
Charles Allen Carriker, Cary, NC (US);
James Scott Alexander, Raleigh, NC (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A method for providing inter-ring protection in shared packet rings includes identifying an active node which is connected to a ring interconnect node on the same ring as the active node and connected to a peer node on a different ring with a ring interconnecting link. When the active node is in active mode and receives notification of a failure of the ring interconnecting link or peer node, the active node sends a message to the ring interconnect node so that the ring interconnect node switches from standby mode to active mode. The active node is then changed to standby mode.