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. 26, 2005
Filed:
Jan. 24, 2001
Gagan Lal Choudhury, Marlboro, NJ (US);
Anurag S. Maunder, Fremont, CA (US);
Gagan Lal Choudhury, Marlboro, NJ (US);
Anurag S. Maunder, Fremont, CA (US);
AT&T Corp., New York, NY (US);
Abstract
A network utilizing a link-state protocol includes a plurality of nodes with associated trunks that recover in a staggered manner. A first trunk associated with a first node is selected for recovery. After the first trunk is recovered, further trunks are selected such that N or less trunks recover at the same time until all trunks associated with the first node are selected for recovery. Node recovery is staggered at selected intervals to minimize or eliminate overload conditions. Staggered recovery in accordance with the present invention can reduce the likelihood of trunk loss due to excessive HELLO messages in an OSPF system and retransmission and retransmission lockout.