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Multicast scheduling method based on switched network

A scheduling method and switching network technology, which is applied in the field of AFDX network communication, can solve the problems that switches cannot meet the requirements of multicast frame jitter and delay performance, so as to meet the requirements of delay and jitter performance, ensure determinism, and save space and time resource effects

Inactive Publication Date: 2015-06-17
AVIC NO 631 RES INST
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Problems solved by technology

The current method cannot meet the performance requirements of switches for multicast frame jitter and delay

Method used

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Embodiment Construction

[0024] The AFDX network is a switch-centric star network, which includes two parts, the end system and the switch. The end system is part of the avionics system and is connected to the AFDX switch through a 10Mbps or 100Mbps full-duplex link. The switch is the key equipment for constructing the backbone network of the data communication of the avionics system. The two switches are mutually backed up, and are used to realize high-speed and reliable data exchange between various devices of the avionics system, and ensure the real-time and deterministic data transmission of the avionics network. and reliability.

[0025] The switch realizes the receiving scheduling through the scheduling algorithm of fair round robin, and submits the input queue of the corresponding port to enter the queue by submitting the queue management application. When the input queue is successfully enqueued, a shared storage space is allocated for the data frame, and the filtered and policed ​​data frame...

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Abstract

The invention relates to a multicast scheduling method based on a switched network. The multicast scheduling method comprises the following steps that 1 shared storage space used for storing data frames is set up; 2 a switch receives the data frames which are stored in the shared storage space set up in the first step; 3 the switch forwards the data frames which are stored in the shared storage space. The multicast scheduling method based on the switched network which can meet multicast frame dithering and delaying performance requirements of the switch is provided.

Description

technical field [0001] The invention belongs to the technical field of AFDX network communication, relates to a switching network-based multicast scheduling method, in particular to a method for storing and scheduling multicast data frames to an AFDX switch. Background technique [0002] With the continuous expansion of the airborne network scale, the airborne network services are also increasing. Some services require data streams to be sent from one source node to multiple destination nodes at the same time. Therefore, the airborne network needs to support multicast tasks. The AFDX network is a deterministic airborne switching network. Its network topology and services are pre-configured by the user, so the traffic of each port of the AFDX switch can also be estimated. The current method cannot meet the performance requirements of switches for multicast frame jitter and delay. Contents of the invention [0003] In order to solve the above-mentioned technical problems in...

Claims

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Application Information

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IPC IPC(8): H04L12/861H04L12/885H04L12/933H04L49/9023
Inventor 牛文生田莉蓉王红春袁晓军魏雪菲邱征刘航
Owner AVIC NO 631 RES INST
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