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Related Experiment Video

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Integration of 5G Experimentation Infrastructures into a Multi-Site NFV Ecosystem
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A source-controlled data center network model.

Yang Yu1,2, Mangui Liang1,2, Zhe Wang1,2

  • 1Institute of Information Science, Beijing Jiaotong University, Beijing, People's Republic of China.

Plos One
|March 23, 2017
PubMed
Summary
This summary is machine-generated.

A new source-controlled data center network (SCDCN) model uses vector addresses (VA) to overcome Software-Defined Networking (SDN) controller limitations. This approach enhances scalability and reduces costs by eliminating TCAM dependency in network switches.

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Area of Science:

  • Computer Networking
  • Data Center Architecture
  • Software-Defined Networking (SDN)

Background:

  • Software-Defined Networking (SDN) offers agility and centralized control for data centers but faces scalability challenges due to controller limitations.
  • Traditional SDN controllers struggle with the massive data flow in modern networks, primarily due to TCAM-based flow storage and lookup mechanisms.
  • High costs, energy consumption, and limited scalability are significant drawbacks of TCAM devices in SDN controllers.

Purpose of the Study:

  • To propose a novel Source-Controlled Data Center Network (SCDCN) model to address the limitations of current SDN architectures.
  • To introduce a new packet-switching label, the Vector Address (VA), for efficient path definition and data forwarding.
  • To reduce the computational complexity and resource demands on SDN controllers and network switches.

Main Methods:

  • Introduced a Source-Controlled Data Center Network (SCDCN) model utilizing Vector Addresses (VA) for packet switching.
  • Implemented a hierarchical multi-controller architecture to manage network domains and reduce individual controller load.
  • Developed Vector Switches (VS) that eschew TCAM for flow storage, relying solely on VA for forwarding decisions.
  • Designed and tested the Vector Switch (VS) on the NetFPGA platform.

Main Results:

  • The SCDCN model effectively abstracts large networks into smaller domains, mitigating single-controller processing limitations.
  • Vector Switches (VS) eliminate TCAM, significantly reducing switch cost, complexity, and improving scalability.
  • Flow establishment is simplified, decreasing control signaling overhead as flow tables are not downloaded to VS.
  • Hardware resource consumption for a VS on NetFPGA is approximately 27% of that for an OpenFlow Switch (OFS).

Conclusions:

  • The proposed SCDCN model with Vector Addresses (VA) offers a scalable, cost-effective, and efficient alternative to traditional SDN architectures.
  • This architecture addresses the critical challenges of controller scalability and resource consumption in large-scale data centers.
  • The SCDCN model demonstrates significant improvements in hardware resource utilization and reduced control signaling.