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Efficient framing procedure for variable length packets

A frame encapsulation and frame mapping technology, which is applied in multiplexing communication, time division multiplexing system, electrical components, etc., can solve the problems of reducing the rate and large overhead

Inactive Publication Date: 2010-12-08
CISCO TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Other disadvantages of GFP include rate control (such as open-loop rate control in 10Gb / s WAN PHY and compatible MAC), which is required to carry 10Gb / s Ethernet into OC192
GFP also requires the use of linear extension headers, so more overhead and reduced rate to support packet-by-packet multiplexing

Method used

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  • Efficient framing procedure for variable length packets
  • Efficient framing procedure for variable length packets
  • Efficient framing procedure for variable length packets

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Embodiment Construction

[0021] The following description is provided to enable any person of ordinary skill in the art to make and use the invention. Descriptions of specific embodiments and applications are provided as examples only, and various modifications will be readily apparent to those skilled in the art. The general principles described here can be applied to other embodiments and applications without departing from the scope of the present invention. Thus, the present invention should not be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features described herein. For the purpose of clarity, details of technical material that is known in the technical fields related to the invention have not been described in detail.

[0022] The invention works in the context of a data communications network comprising a plurality of network elements. The network may be a packet based optical network using the Ethernet data layer at speeds of 1...

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Abstract

A method of processing Ethernet signals for transport in an optical network system is disclosed. The method includes encapsulating Ethernet frames into EFP frames comprising a length header, a converged data link header, and a data area, and mapping the EFP frames into byte synchronous paths. The converged data link header replaces an Ethernet preamble of the Ethernet packet.

Description

technical field [0001] The present invention relates generally to digital communication networks and, more particularly, to efficient framing procedures for variable length packets. Background technique [0002] Efficient transport of traffic requires a network design that accommodates both traditional voice networks and the transport of variable-length packets. Traditionally, SONET / SDH is a digital network for WANs (Wide Area Networks). SONET and SDH are a set of related standards for synchronous data transmission over fiber optic networks. SONET is an acronym for "Synchronous Optical Network," and SDH is an acronym for "Synchronous Digital Hierarchy." SONET is the US version of the standard published by the American National Standards Institute (ANSI). SDH is an international version of a standard published by the International Telecommunication Union (ITU). [0003] The increase in demand for bandwidth has been met by increasing line rates (time division multiplexing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/16
CPCH04J2203/0085H04J3/1617
Inventor 沙若特·普拉萨德玛瑞尼卡·鲁苏铃木洋山卡尔·文卡特拉曼斯特凡诺·比耐特卢卡·德拉·希尔萨
Owner CISCO TECH INC