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. 07, 2009
Filed:
Jul. 03, 2003
Vikram Devdas, Pleasanton, CA (US);
Hitesh Amin, Petaluma, CA (US);
John Diab, Santa Rosa, CA (US);
Marc Bennett, Austin, TX (US);
Ganesh Sundaram, Rohnert Park, CA (US);
Thomas Eric Ryle, Raleigh, NC (US);
Vikram Devdas, Pleasanton, CA (US);
Hitesh Amin, Petaluma, CA (US);
John Diab, Santa Rosa, CA (US);
Marc Bennett, Austin, TX (US);
Ganesh Sundaram, Rohnert Park, CA (US);
Thomas Eric Ryle, Raleigh, NC (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A method and system for flow control of GFP-encapsulated client data frames over SONET/SDH transport networks is described. Transport interfaces, in the form of port cards, have FIFO buffers for receiving the GFP frames. In acknowledgment of the received frames, a transmitting transport interface receives an acknowledgement in form of a returned frame sequence number tag along with the available capacity in bytes of the buffer of the receiving transport interface. With a continuous update of buffer capacity and tracking the number of bytes in transit to the receiving transport interface, the transmitting transport interface maximizes the utilization of the channel through the SONET/SDH transport network, even with dropped frames or dropped acknowledgment tags.