Apparatus having packet allocation function and packet allocation method

A distribution method and technology of communication traffic, applied in data exchange network, energy reduction, energy saving ICT, etc., can solve problems such as operation errors, and achieve the effect of preventing operation errors and high reliability

Inactive Publication Date: 2011-05-18
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] At present, the user has been monitoring the traffic bandwidth. When the bandwidth overflow is predicted, a new line is manually added to change the output port through which the data packet flows. Therefore, whenever a change operation is performed, it may be caused by manual operation. operation error

Method used

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  • Apparatus having packet allocation function and packet allocation method
  • Apparatus having packet allocation function and packet allocation method
  • Apparatus having packet allocation function and packet allocation method

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Embodiment Construction

[0032] The summary of the invention of this application is demonstrated. First, the invention of the present application provides a packet forwarding device that uses a logical port obtained by logically aggregating physical ports connected to multiple physical lines, such as link aggregation. The packet forwarding device is characterized in that , when the traffic imbalance of each physical port occurs in the logical port, the traffic is redistributed to correct the imbalance.

[0033] Second, since the traffic of a virtual LAN called VLAN flows through each logical port, the traffic is monitored in units of the VLAN, and the traffic is allocated to each physical port.

[0034] Third, since a large number of VLANs may be accommodated in each logical port, if all VLANs are redistributed to each physical port when the traffic is redistributed, a very large load will be generated on the packet forwarding device. Therefore, the load on the entire apparatus can be reduced by redi...

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Abstract

The invention provides an apparatus having a packet allocation function. The invention further provides a technique for combining a plurality of physical ports into a single logical port and handling the physical ports as if the physical ports were a single logical line, wherein, when it is desired to select output ones of the physical ports on the basis of any identifier in packets and to transfer packets to the selected physical ports, packet allocation is autonomously carried out in two steps while reflecting actual traffics, thus solving the aforementioned two problems. In this way, since averaged packets as a whole are made to flow, an excessive bandwidth is effectively used, thus avoiding a packet discard. When a bias occurs in flow bandwidths allocated to the physical ports of the logical port and a total maximum of the flow bandwidths of the physical ports exceeds a threshold specified by an administrator or operator, an operator (310) divides the magnitudes of the flow bandwidths according to a previously specified threshold, one of the traffics having a larger flow bandwidth is extracted and allocated to obtain averaged distribution or allocation, and thereafter, the remaining traffics are allocated. As a result, the traffics are averaged as a whole.

Description

technical field [0001] The present invention relates to a device and a data packet distribution method that have a data packet distribution function using a technology that logically aggregates a plurality of physical lines between adjacent devices and treats them as if they were a single line. In the volume business field, there are devices and packet distribution methods that employ a two-stage packet distribution function suitable for autonomously avoiding bandwidth overflow in advance and effectively utilizing the remaining bandwidth. Background technique [0002] Now, due to the popularity of the Internet, the improvement of the CPU performance of personal computers, and the appearance of multimedia personal computers, in addition to forwarding text data, the transmission of audio and video has also been widely used in the packet forwarding network. Compared with text data, it is more necessary to suppress packet loss in the transmission of audio and video. Therefore, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L45/24H04L47/41H04L47/76
CPCY02B60/33H04L47/41H04L47/10H04L45/245H04L47/125H04L47/29H04L45/00Y02D30/50
Inventor 小板桥久美川合卓司
Owner HITACHI LTD
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