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Communication device and method of controlling the same

A communication device and communication line technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve the problems of bandwidth expansion, inability to continue communication, and inability to bundle multiple physical links, etc., to achieve bandwidth expansion and failover time The effect of speeding up

Inactive Publication Date: 2013-12-18
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] According to this method, although the problem of not being able to continue the communication when the IF card fails, which is the problem of Patent Document 1, can be solved, it cannot be used by aggregating a plurality of physical links and expanding the bandwidth like link aggregation.

Method used

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  • Communication device and method of controlling the same
  • Communication device and method of controlling the same
  • Communication device and method of controlling the same

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Experimental program
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Embodiment approach 1

[0044]Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings. In this embodiment, a link aggregation method is used as a function of aggregating a plurality of physical ports, but the same effect can be obtained by adopting a method of aggregating a plurality of physical links other than link aggregation. In addition, in this embodiment, Ethernet OAM is used for failure monitoring of physical ports, but the same effect as this embodiment can be obtained by adopting a failure monitoring method other than Ethernet OAM. Similarly, in this embodiment, Ethernet APS is used for switching LA logical ports, but the same effect as this embodiment can be obtained by adopting a redundant path switching method other than Ethernet APS.

[0045] figure 1 It is a block diagram showing the configuration of the communication system according to the first embodiment of the present invention, and specifically shows an example of a co...

Embodiment approach 2

[0181] Hereinafter, a second embodiment of the present invention will be described in detail with reference to the drawings. The structural difference between the second embodiment of the present invention and the first embodiment is that the first embodiment has a 1:1 redundant structure, and the second embodiment has a 1+1 redundant structure. Among the constituent elements of the communication system of the present embodiment, the elements assigned the same reference numerals as the constituent elements of the communication system of the first embodiment have the same reference numerals as those assigned thereto except for the differences described below. The constituent elements of the communication system of the first embodiment of the reference numerals have the same functions, and therefore descriptions thereof will be omitted.

[0182] Figure 16 It is an explanatory diagram of the flow of the Ethernet frame in the communication system according to the second embodime...

Embodiment approach 3

[0213] Hereinafter, a third embodiment of the present invention will be described in detail with reference to the drawings. The structural difference between the third embodiment of the present invention and the first and second embodiments is that in the first and second embodiments, an LA logical port is implemented between adjacent communication devices 100-1 and 100-2. 110-n, in contrast to this, in the third embodiment, there is a communication carrier ( Carrier) in the case of the trunk network to achieve the redundancy of the LA logical port.

[0214] In the third embodiment, an LA logical port is constructed between the remote communication device 500-1 and the communication device 500-2, and the OAM function confirms the normality of the physical port belonging to the LA logical port. In the event of a failure, the communication devices 500 - 1 and 500 - 2 have a remote port maintenance circuit 571 in order to switch the LA logical port by the APS function.

[0215]...

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Abstract

Provided is a communication device including a plurality of physical ports, the communication device holding information for associating each of at least one logical port and at least two physical ports, the communication device being configured to: identify, when any one of the plurality of physical ports receives data including user data, one of the at least one logical port as an output destination of the data based on destination information included in the received data;select, based on the data, one of the at least two physical ports associated with the identified logical port as an destination of the data;generate coupling check data relating to one of the plurality of physical ports;transmit the coupling check data from the one of the plurality of physical ports;and transmit data including the user data from the physical port selected by a first processing unit as the output destination.

Description

technical field [0001] The present invention relates to a communication device used in a communication network, and in particular to link aggregation port redundancy constructed using link aggregation (link aggregation) that virtually bundles a plurality of physical links and can be used as if it were a single link advanced communication devices. Background technique [0002] In recent years, the provision of IT services using communication networks represented by cloud services has been increasing. In these IT services using communication networks, since service utilization responsiveness and continuity are important, high-speed communication and high reliability are required for communication networks. [0003] Link aggregation is known as a technique for enhancing a communication frequency band (Patent Document 1). Link aggregation is a technology that aggregates multiple physical ports connecting two devices and uses them as one link aggregation (LA) logical port. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/707H04L69/40H04L45/24
CPCH04L41/0654
Inventor 高濑诚由宇田哲也菅野隆行藤平健二
Owner HITACHI LTD
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