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Lenovo Networking Best Practices for CNOS: Network Design and Topologies

Planning / Implementation (withdrawn product)

31 Jan 2019
Form Number
PDF size
14 pages, 169 KB


This paper shows recommended network topologies with a focus on avoiding the use of Spanning Tree and providing maximal bandwidth and redundancy to serve a cluster of servers in a data center environment. The examples shown rely on the use of the CNOS firmware in Lenovo® top-of-rack switches. This paper is suitable for network designers and architects involved in designing or modifying a data center.

Table of Contents

Full mesh topology with Virtual Link Aggregation
Inverted U topology with failover
Traditional STP design with blocking
Isolated management network
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Change History

Changes in the January 31 update:

  • Minor corrections to improve clarity

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