May 2018
Intermediate to advanced
256 pages
7h 6m
English
Content preview from OpenStack for Architects - Second Edition
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Physical network design
No discussion of OpenStack networking would be complete without the mention of the spine-leaf physical network architecture. Spine-leaf is an alternative to the traditional multitier network architecture, which is made up of a set of core, aggregation, and access layers. Spine-leaf introduces a modification to the design of the aggregation layer in order to reduce the number of hops between servers that are attached to different access switches. The aggregation layer becomes a spine in which every access switch (the leaf) can reach every other access switch through a single spine switch. This architecture is often considered a prerequisite for horizontally scalable cloud workloads, which are focused more on traffic ...
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