Cisco N9K-C93128TX Datasheet download pdf (Page 7)

Figure 8. Collapsed Access and Aggregation Layers with Cisco Fabric Extenders

Leaf-and-Spine Architecture

Cisco Nexus 9300 series switches are excellent choices for leaf switches in a leaf-and-spine architecture

(Figure 9). The Layer 3 capabilities established by both Cisco Nexus 9500 and 9300 platforms enable the two to be

used with Equal-Cost Multipath (ECMP) routing to accelerate the flow of traffic and reduce reconvergence time in

the event of a failure. The degree of redundancy in leaf-and-spine architectures delivers increased availability with

a high level of flexibility in workload placement.

Figure 9. Cisco Nexus 9300 and 9500 Platforms in a Leaf-and-Spine Architecture

Cisco NX-OS Software Overview

Cisco NX-OS is a data center purpose-built operating system designed for performance, resiliency, scalability,

manageability, and programmability at its foundation. Cisco NX-OS provides a robust and comprehensive feature

set that meets the demanding requirements of virtualization and automation in present and future data centers.

The Cisco Nexus 9000 Series uses an enhanced version of Cisco NX-OS Software with a single binary image that

supports every switch in the series, simplifying image management. The operating system is modular, with a

dedicated process for each routing protocol, a design that isolates faults while increasing availability. In the event

of a process failure, the process can be restarted without losing state. The operating system supports In-Service

Software Upgrade (ISSU), hot and cold patching, and online diagnostics.

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Cisco N9K-C93128TX Datasheet Page 7