Datacenter Traffic Control: Understanding Techniques and Trade-offs
Mohammad Noormohammadpour, Cauligi S. Raghavendra

TL;DR
This paper reviews the architecture, traffic properties, and control challenges of datacenter networks, highlighting various management techniques and open research problems in traffic control and inter-datacenter connectivity.
Contribution
It provides a comprehensive overview of datacenter traffic control mechanisms, characteristics, and challenges, emphasizing important factors and recent research directions.
Findings
Different traffic types require tailored control strategies
Traffic management techniques improve datacenter performance
Open challenges include traffic scheduling and inter-datacenter connectivity
Abstract
Datacenters provide cost-effective and flexible access to scalable compute and storage resources necessary for today's cloud computing needs. A typical datacenter is made up of thousands of servers connected with a large network and usually managed by one operator. To provide quality access to the variety of applications and services hosted on datacenters and maximize performance, it deems necessary to use datacenter networks effectively and efficiently. Datacenter traffic is often a mix of several classes with different priorities and requirements. This includes user-generated interactive traffic, traffic with deadlines, and long-running traffic. To this end, custom transport protocols and traffic management techniques have been developed to improve datacenter network performance. In this tutorial paper, we review the general architecture of datacenter networks, various topologies…
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