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:
Dec. 05, 2006
Filed:
Apr. 04, 2002
Pradeep Shrikrishna Limaye, Westfield, NJ (US);
Heena Nandu, Sunnyvale, CA (US);
Srinivasan Murari, Freemont, CA (US);
Pradeep Shrikrishna Limaye, Westfield, NJ (US);
Heena Nandu, Sunnyvale, CA (US);
Srinivasan Murari, Freemont, CA (US);
Bay Microsystems, Inc., San Jose, CA (US);
Abstract
An apparatus and method that extend the automatic protection switching protocol to address at least 256 network nodes. By using overhead bytes as extended APS node IDs, large single ring SONET/SDH systems can be avoided. This means APS messages that force every node into a single ring can be avoided and recovery performance from a break in the ring or a node fault can be improved. The protocol for the extended automatic protection switching channels takes multiple extended APS node IDs from tributary lines and merges those extended APS ID's into a single SONET/SDH stream on another line. Placement of the extended APS node ID's in the overhead bytes of SONET/SDH frames allows easy relay around each SONET/SDH ring.