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:
Apr. 21, 2015
Filed:
Jun. 08, 2011
Rajnath Singh, Richardson, TX (US);
Guoliang Wu, Plano, TX (US);
David Traylor, Allen, TX (US);
SI Long Ho, Allen, TX (US);
Chenjiang HU, Plano, TX (US);
Ladan S. Pickering, Plano, TX (US);
Rajnath Singh, Richardson, TX (US);
Guoliang Wu, Plano, TX (US);
David Traylor, Allen, TX (US);
Si Long Ho, Allen, TX (US);
Chenjiang Hu, Plano, TX (US);
Ladan S. Pickering, Plano, TX (US);
Fujitsu Limited, Kawasaki-shi, JP;
Abstract
A method may include: (i) in response to clearing of a fault on a working path of a protection switching group to which a first network element is interfaced: (a) transitioning, by the first network element, its state to a first state in which a protection path of the protection switching group is active; and (b) initiating, by the first network element, a wait to restore timer, the wait to restore timer having a duration such that upon expiration of the timer, the first network element is configured to switch the working path to active; and (ii) in response to receiving a message from a second network element interfaced to the protection switching group indicating that a failure has occurred on the working path: (a) maintaining, by the first network element, its state in the first state; and (b) continuing, by the first network element, the wait to restore timer.