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Load sharing method and device

A type of load sharing technology, applied in the field of data communication, can solve problems such as uneven load sharing

Active Publication Date: 2016-10-19
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above technical problems, the present invention provides a method and system for realizing load sharing, which can improve the situation of uneven load sharing, make the load sharing of each link even and reasonable, and the bandwidth of each link after load sharing meets the bandwidth of traffic distribution. need

Method used

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Experimental program
Comparison scheme
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Embodiment 1

[0152] image 3 is a flowchart of the method of the first embodiment of the present invention, such as figure 2 as shown,

[0153] Step 300, adopting a preset ratio of 1:1, and performing traffic sampling in the second load sharing method;

[0154] In this step, the default ratio is set to 1:1 to indicate that the quality requirements of the second load sharing method are high. In addition, in this embodiment, the implementation is identified by adding the flow keyword virtual private network function number (VPN ID) to DIP. For example, traffic data that needs to be processed by the second load sharing method.

[0155] Step 301, write the sampled traffic data into the cache, analyze the types of sampled traffic and obtain the first ratio of the sampled traffic to various types of traffic;

[0156] Step 302, calculating the second ratio of the bandwidth of each link in the link to the total bandwidth of all links for traffic distribution;

[0157] Step 303, distribute var...

Embodiment 2

[0166] The number of links for traffic load sharing is 3, and the link bandwidth ratio of the 3 links is 1:2:1;

[0167] The traffic of the message is IP traffic, based on SIP changes from 10.10.10.0 to 10.10.10.254, a total of 255 kinds of traffic;

[0168] The first load sharing method is the method of CRC32mod logical linknum link number of the source IP, here, here physical linknum=3 logical linknum=1+2+1=4, after the above modulus, it is determined to divide into three links.

[0169] Assume that the first preset duration is 10 minutes, and the load sharing threshold (deviation between the maximum link load and the minimum link load) is 0.05;

[0170] Within the first preset time period, the traffic numbers of the three links under the first load sharing method are respectively 6200000, 12800000 and 6400000;

[0171] After dividing the load-sharing traffic of each link by the link bandwidth, the traffic-bandwidth ratios are (62 / 64), 1, and 1, respectively.

[0172] The ...

Embodiment 3

[0175] The number of links for traffic load sharing is 3, and the link bandwidth ratio of the 3 links is 1:2:1;

[0176] The traffic of the message is IP traffic, based on the change of SIP, there are 10 kinds of traffic from 10.10.10.0 to 10.10.10.9;

[0177] There are 10 types of traffic from 20.20.20.0 to 20.20.20.9 based on DIP changes;

[0178] Based on the change of the TCP source interface (sport) from 0 to 9, the destination interface (dport) 0 to 9 changes a total of 10*10*10*10=10000 kinds of traffic;

[0179] Each flow is assumed to have the same traffic size.

[0180] The first load sharing method is CRC32 (keywords include sip, dip, sport, dport) modlinknum, where physical linknum = 3, logical linknum = 1+2+1 = 4, and the traffic is divided into three according to the results of the modulus link

[0181] Assume that the first preset duration is 10 minutes, and the load sharing threshold is 0.01;

[0182] Within the first preset time period, the traffic numbers...

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Abstract

The invention discloses a load sharing method and device. The method comprises that flows of different links within a first preset time length in a first load sharing method are counted, and a load sharing parameter of a system is obtained; and when the load sharing parameter is greater than or equivalent to a preset load sharing threshold, it is determined that load sharing in uneven, a second load sharing method is switched to, and flows are distributed to flow distribution links for flow distribution. According to the method of the invention, the second load sharing method is used when the load sharing parameter exceeds the load sharing threshold, and the problem of uneven load sharing is solved; and further, different types of flows from large to small are distributed to links from wide to narrow bandwidth, when a difference, which is obtained by subtracting the sum of first proportions of different types of flows distributed to certain link from a second proportion of a link in the lowest second proportion, is lower than zero, load sharing is influenced, the maximal link is used for digestion, and the problem of uneven load sharing is solved more reasonably.

Description

technical field [0001] The invention relates to the field of data communication, in particular to a method and device for realizing load sharing. Background technique [0002] Used in routers or other products, when the traffic entering the router is greater than the bandwidth of the outgoing interface of a single link of the router, the incoming traffic is distributed to the outgoing interfaces of multiple links through the load sharing method to satisfy the user traffic. distribution needs. [0003] According to different traffic distribution methods, the load sharing method is divided into packet-based load sharing and flow-based load sharing. Among them, the load sharing based on the packet mode refers to randomly distributing the traffic entering the router to the outbound interfaces of multiple configured load sharing links; the load sharing based on the flow mode includes Interface, different from packet-based load sharing, flow-based load sharing also needs to ensu...

Claims

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Application Information

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IPC IPC(8): H04L12/803
Inventor 牛俊杰
Owner ZTE CORP