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Network node with modular multistage packet classification, and packet processing method

一种网络节点、包处理器的技术，应用在包分类领域，能够解决不灵活、完全转移包分类任务并旁路数据路径低效、昂贵等问题

Inactive Publication Date: 2010-12-22
ALCATEL LUCENT SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Offloading packet classification tasks entirely and bypassing the data path is inefficient, inflexible, and expensive due to hardware doubling

Method used

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  • Network node with modular multistage packet classification, and packet processing method
  • Network node with modular multistage packet classification, and packet processing method
  • Network node with modular multistage packet classification, and packet processing method

Examples

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Embodiment Construction

[0030] figure 1 A DSLAM is shown with a first line card 101 having an inbound port 131, a first level data plane classifier 111, a first set of M packet processors 112, a first multiplexer 113 and an outbound port 134. The line card 101 also has a slot for connecting to a pluggable service blade 102 having a second level data plane classifier 121, a second group S-N+1 processor 122, and a second complex Use device 123. The connection 132 between the first-stage sorter 111 and the second-stage sorter 121 , and the connection 133 between the second multiplexer 123 and the first multiplexer 113 pass through the slots just mentioned. Note that M is assumed to be an integer equal to or greater than 1, N is assumed to be M+1, and S is assumed to be an integer equal to or greater than N. For example: M=1, N=2, S=2, here there is a single first-level data plane processor and a single second-level data plane processor. However, in the latter case where a stage contains only one pa...

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PUM

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Abstract

A network node able to receive, process and forward data packets, has a first stage data plane packet classifier (111) supporting basic services initially deployed and a later insertable second stage data plane packet classifier (121) supporting more advanced services deployed afterwards.

Description

technical field [0001] The present invention generally relates to packet classification in the data path of a network node such as, for example, a Digital Subscriber Line Access Multiplexer (DSLAM), Cable Modem Termination System (CMTS), Digital Loop Carrier (DLC) Or access nodes such as fiber aggregators, routing nodes such as edge IP routers, core IP routers, switches / routers, etc. The basic function of these network nodes is to process incoming data packets that arrive at an inbound port and forward them to an outbound port that brings the data packet closer to its destination, in this patent application a packet or data packet refers to as Any group of bits / bytes sent as a whole, typically with a header and a payload portion. It includes fixed-length and variable-length packets. Processing and forwarding decisions are based on the results of packet classification. In the packet forwarding model, packet classification is probably the most complex and intensive task of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/02H04L12/24H04L29/06
CPCH04L47/10H04L47/2441
Inventor E·B·L·吉隆E·A·C·西克斯N·V·韦尔齐普R·胡瑟格姆斯H·M·F·C·德凯克
Owner ALCATEL LUCENT SAS
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