SDN based distributed control load balancing system and method

A distributed control and load balancing technology, applied in the field of communication networks, can solve the problems of uneven load, unbalanced large-scale single data center network traffic, single data center network load unevenness, etc., to overcome overhead and distribution Expansion and overcoming the effect of fine-grained traffic balance

Active Publication Date: 2018-03-20
XIDIAN UNIV +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

For the load balancing scheme based on the SDN idea, there are mainly two schemes in the existing technology, namely, the distributed multi-controller load balancing scheme for large-scale multi-data center networks and the centralized single-controller load balancing scheme for small-scale single data center networks. The controller load balancing solution, a distributed multi-controller load balancing solution for large-scale multi-data center networks, solves the problem of uneven load among multi-data center networks, but does not solve the problem of fine-gr

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  • SDN based distributed control load balancing system and method
  • SDN based distributed control load balancing system and method
  • SDN based distributed control load balancing system and method

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Embodiment 1

[0046] There are two main types of existing load balancing solutions, namely the distributed multi-controller load balancing solution for large-scale multi-data center networks and the centralized single-controller load balancing solution for small-scale single data center networks. The distributed multi-controller load balancing solution for data center networks solves the problem of uneven load among multi-data center networks, but does not solve the problem of uneven traffic within a large-scale single data center network caused by fine-grained granularity. The centralized single-controller load balancing solution for small-scale single-data center networks solves the problem of uneven load within the single-data center network, but does not solve the problem of distributed expansion of large-scale single-data center networks, and cannot adapt to large-scale data centers Network application requirements. In order to adapt to the application requirements of the new large-sca...

Embodiment 2

[0049] The overall composition of the SDN-based distributed control load balancing system is the same as that in Embodiment 1. The link information module in the SDN controller of the present invention is used to store the link information of the area network; the routing table module is used to store the routing information of the flow. ; The routing calculation module is used to query the information stored in the link information module and the routing table module, and calculate the path for the flow according to the queried information; for the monitoring and collection of link information in the link information module, the SDN controller will First, send LLDP (Link Discovery Protocol) data packets to all SDN switches connected to it through a Packet_out message. After receiving the message, these SDN switches will send LLDP data packets to all their ports. If an SDN switch receives These sent LLDP data packets will send the link information between the source and destina...

Embodiment 3

[0052]The overall composition of the SDN-based distributed control load balancing system is the same as in Embodiment 1-2, and the SDN controller 1 of the present invention is used to obtain all link information between the edge layer and the aggregation layer, that is, the area network 1, and to control all The SDN switch at the edge layer delivers the flow table and performs centralized control on area network 1. The SDN controller 2 of the present invention is used to obtain all link information between the convergence layer and the core layer, that is, the area network 2, and issue flow tables to all the convergence layer SDN switches and perform centralized control on the area network 2; for The functions of the SDN controllers. The two SDN controllers respectively perform link discovery, link information management, routing policy formulation, and flow table item delivery to their respective control area networks through the southbound interface protocol (OpenFlow protoco...

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Abstract

The invention discloses an SDN based distributed control load balancing system and method, aiming at mainly solving the problems of distributed extension, network overheads, uneven load and link congestion in existing small-scale single data center networks. The system disclosed by the invention comprises a three-layer Clos underlying network and two SDN controllers, wherein the SDN controller isadditionally provided with link information, a routing table and a routing calculation module, and the above modules act together to calculate a path for a data stream. The load balancing method includes the following steps: adopting two-step path selection, partitioning the data stream into stream slices in a buffer area of an end host, separately monitoring and collecting local link informationof two local area networks by using the two controllers, and taking a queuing delay of each port of a switch as the link information to optimize the selection of routing links. According to the schemeof the invention, the distributed multi-controller and two-step path selection are adopted in the three-layer Clos network, and a significant network balancing effect can be achieved; and the schemecan be used for load balancing control of large-scale single data center networks.

Description

technical field [0001] The invention belongs to the technical field of communication networks, and relates to a distributed control load balancing technology, in particular to an SDN-based distributed control load balancing system and method, which can be used in a Clos-structured data center network. Background technique [0002] In recent years, with the rapid growth of Internet services, data center network operations have become more complex. Currently, traffic management operations in a data center network are mainly divided into two strategies. One is a strategy related to user services, such as web browsing, search query, and other user services; this strategy is mainly aimed at mouse traffic, which is generated through user services, and for user-specific SLA services, mouse traffic often transmits A short duration, ie a short Flow Completion Time (FCT), is required. Another type of policy-operated traffic is generated by virtual machine migration, data backup, and...

Claims

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Application Information

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IPC IPC(8): H04L12/803H04L12/709H04L12/727H04L12/951H04L45/121H04L45/243H04L47/43
CPCH04L45/121H04L45/24H04L47/125H04L49/9057
Inventor 顾华玺刘勇郭彦涛余晓杉王琨
Owner XIDIAN UNIV
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