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Method to preserve the order of packets of a same flow

A technology of data grouping and data flow, applied in data exchange networks, digital transmission systems, electrical components, etc., to solve problems such as reordering is not allowed, complex algorithm circuits, etc.

Inactive Publication Date: 2007-07-04
ALCATEL LUCENT SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such reordering produces relatively complex algorithms and corresponding circuits
[0007] Also, in the case of Ethernet frames, reordering of frames belonging to the same "Ethernet stream" is also not allowed

Method used

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  • Method to preserve the order of packets of a same flow
  • Method to preserve the order of packets of a same flow
  • Method to preserve the order of packets of a same flow

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Experimental program
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Embodiment Construction

[0023] The various Figures 1 to 4 all represent network elements of a telecommunication network. The network element comprises a parallel coupling of a data plane DP and a control plane CP via which data packets are sent. Data packets usually arrive at the input of the data plane DP (right side of Fig. 1). The data packets are then either transferred from there to the control plane CP to be processed there, or remain in the data plane where they are transferred to the output of the data plane (on the left in FIG. 1 ). The output of the control plane is coupled to the output of the data plane, where packets from the control plane are combined with packets sent through the data plane. Because packets of the same data flow are not transmitted along the same route, that is, via the control plane or via the data plane, and in addition, the control plane and the data plane may have different processing speeds, therefore, the order in which the packets arrive at the output of the da...

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PUM

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Abstract

A method to preserve the ordering of data packets of a same flow (P1-P4, P7, P8) passing either through a control plane (CP) or through a data plane (DP) of a telecommunication network element. The method comprises the step of, when the control plane starts processing the new flow, the control plane controls the data plane to latch any other packet belonging to this flow by sending a first control packet (C1) to said data plane. When the processing is completed, the control plane controls the data plane to release the latched packets by sending a second control packet (C3) to said data plane. The present method is particularly applicable to Ethernet frames, where it is also not allowed to reorder frames belonging to a same 'Ethernet flow'.

Description

technical field [0001] The present invention relates to a method of maintaining the ordering of data packets of the same data flow passing through the control plane or the data plane of a telecommunication network element. Background technique [0002] In such known telecommunication network elements, data packets of the same data flow are usually received at the input of the data plane. The packets are then either passed to the control plane to be processed there, or are retained in the data plane and passed to the output of the data plane. At the output of the control plane, packets are returned to the data plane, where they are merged within the data stream sent via this data plane. Since the packets of the same data flow do not follow the same route, ie via the control plane or via the data plane, their order may be affected at the merge output of the data plane. [0003] The problem is to rearrange the order of the packets of the same data stream at the output of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56
CPCH04L47/34H04L47/10
Inventor S·G·布克M·A·T·贝克E·F·E·博格斯P·H·M·考特尔埃尔斯P·A·P·勒诺
Owner ALCATEL LUCENT SAS