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:
Sep. 06, 2011
Filed:
Mar. 31, 2004
David E. Chisholm, Petaluma, CA (US);
Ji Wen, Cary, NC (US);
Charles A. Carriker, Jr., Cary, NC (US);
Jim P. Ervin, Raleigh, NC (US);
Sanjeev D. Rampal, Cary, NC (US);
David E. Chisholm, Petaluma, CA (US);
Ji Wen, Cary, NC (US);
Charles A. Carriker, Jr., Cary, NC (US);
Jim P. Ervin, Raleigh, NC (US);
Sanjeev D. Rampal, Cary, NC (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A technique controls the capacity of a virtual concatenation group (VCG) carried on a SONET path of a data network. Efficient control of VCG capacity is provided by emulating aspects of a Link Capacity Adjustment Scheme (LCAS) protocol in software. A hardware poller facility is employed to manage the status and state of the VCG, as well as members belonging to the VCG. The hardware poller contains one or more VCG state machines (VSMs) and member state machines (MSMs) configured to maintain the status and states of the VCGs and their members.