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Flow-aware Ethernet digital subscriber line access multiplexer dslam

An Ethernet, user technology, applied in digital transmission systems, data exchange networks, electrical components, etc., to solve problems such as increasing or decreasing the number of service quality levels

Active Publication Date: 2006-06-07
ALCATEL LUCENT SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is not possible to dynamically increase or decrease the number of QoS levels at intermediate points

Method used

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  • Flow-aware Ethernet digital subscriber line access multiplexer dslam

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Embodiment Construction

[0027] The access node 1 shown in the figure is capable of transmitting Ethernet data frames between the user 2 and the aggregation network 3 . The access node is preferably an Ethernet Digital Subscriber Line Access Multiplexer, DSLAM, which is provided with ATM-like characteristics allowing it to support a multi-service architecture. One of said ATM-like features is for example "flow awareness", which is the ability to process traffic differently according to the user to which the traffic belongs and the type of service represented.

[0028] In order to achieve this purpose, preferably the access node 1 of a flow-aware Ethernet DSLAM includes a first memory 4 and a classification agent 5, the first memory stores classification rules applicable to Ethernet data frames, and the classification agent classifies these Rules are applied to source information extracted from incoming data frames. The purpose of the classification agent 5 is to infer flow-aware information for outgo...

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Abstract

An access node (1) that is preferably a Flow-Aware Ethernet DSLAM adapted to transmit Ethernet data frames between subscribers (2) and an aggregation network (3). The access node comprises a first memory (4) for storing classification rules and a second memory (6) for storing flow rules. These rules are applied by a classification agent (5) and by a service agent (7) to information extracted from incoming data frames in order to infer flow awareness information of outgoing frames corresponding to these incoming data frame. In this way, the subscriber access network evolves to a multi-service architecture by replacing ATM with Ethernet for cost reasons. The concept of "flow awareness" is applied to the present access node. With respect to known tunnel-based Ethernet DSLAMs, the present access node removes all dependency on correct encapsulation or labeling at the customer side and at the service provider side. By removing the need for tunnels, traffic may be inserted at any intermediate point, as may be required for multicast.

Description

technical field [0001] The invention relates to an access node adapted to transfer Ethernet data frames between a plurality of users and an aggregation network. Background technique [0002] Such access nodes are generally known in the prior art. It is eg the known Digital Subscriber Line Access Multiplexer DSLAM. [0003] Subscriber access networks, including access nodes, are evolving towards a multi-service architecture, while attempts are being made to replace Asynchronous Transfer Mode ATM with Ethernet for cost reasons. In order to support the multi-service structure, ATM-like features such as "flow awareness" must be added to the Ethernet. This is the ability to handle a business differently depending on the user to which it belongs and the type of service it represents. [0004] So far, through tunnel-based protocols, such as ATM, point-to-point protocol on ATM PPPoA and point-to-point protocol on Ethernet PPPoE, or differentiated service (Differentiated Service) ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/00
CPCH04L47/10H04L47/2408H04L47/2441H04L9/40
Inventor M·A·T·贝克E·F·E·博格斯P·H·M·考特尔埃尔斯H·M·F·C·德凯克T·吉塞林格斯
Owner ALCATEL LUCENT SAS