| East-west traffic, in a networking context, is the transfer of data packets from server to server within a data center. The term east-west for this type of traffic comes from network diagram drawings that usually depict local area network (LAN) traffic horizontally. In contrast, north-south traffic describes client-to-server traffic that moves between the data center and a location outside of the data center network. North-south traffic is typically depicted vertically to illustrate traffic that flows above or below the data center. In the past few years, the volume of east-west traffic has grown as a result of virtualization and data center trends such as converged infrastructure. Today, network controllers, virtual machines (VMs) and other devices perform various functions and services that previously ran on physical hardware. As these components relay data to each other, they increase traffic on the network, which in turn, can cause latency issues that negatively impact network performance. For example, if hosts on one access switch need to quickly communicate with systems on another access switch, uplinks among the access layer and aggregation layer become congested. To compensate, many organizations have migrated from traditional three-layer data center architectures to various forms of leaf-spine architectures. The simplicity of a leaf-spine approach is well-suited to handling higher volumes of east-west traffic; leaf switches consolidate traffic from users and then connect to the spine, which consists of servers and storage systems. 
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| | | Writing for Business | Application streaming and virtualization can help you _______ greater network efficiency.
a. attain
b. obtain
Answer | |
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