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:
May. 23, 2006
Filed:
Dec. 12, 2000
Motoo Nishihara, Tokyo, JP;
Motoo Nishihara, Tokyo, JP;
Juniper Networks, Inc., Sunnyvale, CA (US);
Abstract
A layerframe, capable of accommodating data of any protocol selected from an STM (Synchronous Transfer Mode) signal, ATM (Asynchronous Transfer Mode) cells, a primary IP (Internet Protocol) packet and a best effort IP packet in a common frame format, is constructed by an edge node and transmitted to a data transfer system composed of edge nodes, core nodes, etc. The layerframe includes a layerframe header, a layerframe payload and a payload CRC (Cyclic Redundancy Check) field. The layerframe header includes a 'Packet Length' identifier, a 'Priority' identifier, a “Protocol” identifier indicating the type of the data, a “Frame Mode” identifier, a “Stuff” identifier indicating whether or not stuff data is contained in the layerframe, and a “Header CRC” identifier. The layerframe payload contains a layerframe having a layerframe header and a layerframe payload in which the data is packed. STM layerframes containing the STM signals are transferred with the highest priority at fixed intervals (125 μsec). Best effort IP layerframes containing the best effort IP packets are transferred with the lowest priority. Partitioning of the best effort IP layerframe, stuffing, dummy frames, etc. are employed for implementing the periodical transmission of the STM layerframes.