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Quality of service (QoS) method compatible with automated teller machine (ATM) and based on internet protocol (IP) layer 2/layer 3 switching

A three-layer switching and service method technology, applied in the QoS service field compatible with ATM and based on IP two/three switching, can solve the problems of complex network structure, repetition and low transmission efficiency, and achieve the effect of simplifying the network architecture

Inactive Publication Date: 2011-11-02
CHONGQING JINMEI COMM
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  • Abstract
  • Description
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Problems solved by technology

[0004] This method requires two sets of maintenance and management modules, the network structure is complex and repetitive, and the transmission efficiency is low. ATM and TCP / IP must have addressing, routing and flow control functions

Method used

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  • Quality of service (QoS) method compatible with automated teller machine (ATM) and based on internet protocol (IP) layer 2/layer 3 switching
  • Quality of service (QoS) method compatible with automated teller machine (ATM) and based on internet protocol (IP) layer 2/layer 3 switching
  • Quality of service (QoS) method compatible with automated teller machine (ATM) and based on internet protocol (IP) layer 2/layer 3 switching

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Embodiment Construction

[0011] In order to realize this scheme, it needs to be completed by the following two units.

[0012] ATM cell adaptation unit: this module is responsible for the adaptation of ATM cells to Ethernet frames, by judging the information such as VPI / VCI and CID in the ATM cell header (see image 3 ), judge the virtual circuit (VC) to which the ATM cell belongs, and then select a corresponding priority encapsulation rule to adapt it to the Ethernet frame.

[0013] The specific steps of this module are implemented as follows.

[0014] 1. Receive the corresponding relationship between VC and Ethernet frame from the IP layer 2 / layer 3 switching unit chip, and then record it locally.

[0015] 2. Receive ATM cells from the ATM link.

[0016] 3. Extract the VPI / VCI, CID and other information in the ATM cells, and restore them to the corresponding VC information.

[0017] 4. According to VC information, adapt ATM cell to Ethernet frame data, and send it to layer 2 / 3 switch chip through...

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Abstract

The invention provides a quality of service (QoS) method compatible with an automated teller machine (ATM) system and based on internet protocol (IP) layer 2 / layer 3 switching. A system for realizing the method consists of two parts, i.e., an ATM cell adapting unit and an IP layer 2 / layer 3switching unit. The ATM cell adapting unit is responsible to adapt an ATM cell that is received from a certain link layer medium into an Ethernet frame according to an adapting rule specified by a IP layer 2 / layr 3, send the Ethernet frame to the IP layer 2 / layer 3 switching unit and reversely adapt the Ethernet frame that is received from the IP layer 2 / layer 3 switching unit into the ATM cell; the IP layer 2 / layer 3 switching unit is responsible to provide services, such as switching, flow controlling, priority scheduling and the like for the Ethernet frame sent by the switched ATM cell adapting unit. With the adoption of the two units, the effects of compatibility of an ATM system and continuousness of QoS service can be achieved. Compared with the prior art, the method disclosed by the invention has the beneficial effects that two sets of ATM and IP maintenance and management modules are not required to be maintained, the ATM only needs to have an addressing capability, and then a IP-based switching chip can provide a flow control capability, therefore the structure of a network system is simplified.

Description

technical field [0001] The invention relates to a differentiated service method for data link layer plane data and network layer plane data, in particular to a QoS service method compatible with ATM and based on IP two-layer / three-layer switching. Background technique [0002] The traditional IP routing technology realizes the delivery of IP packets to the destination through software forwarding. Under this mechanism, the bandwidth of the network is limited by the switching capability of the router. In order to get rid of this limitation, IP over ATM is proposed. Under this system, the forwarding of IP relies on the high-speed switching capability of ATM to greatly increase the bandwidth of the network. [0003] The method of IP over ATM includes: IP is transmitted on ATM, the routing protocol of IP is implemented by IP router, and the routing protocol of ATM is realized by ATM network. In this method, the terminal system on the ATM network needs to define two sets of addre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/851
Inventor 王亚昕陈量罗明阳蒋元兵李艳新郑建
Owner CHONGQING JINMEI COMM
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