© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2023
J. JanovicCisco ACI: Zero to Herohttps://doi.org/10.1007/978-1-4842-8838-2_2

2. ACI Fundamentals: Underlay Infrastructure

Jan Janovic1  
(1)
Prague, Czech Republic
 

In this chapter, you will focus on establishing a proper understanding of the main ACI components: the underlay network infrastructure and APIC controllers with their architectural deployment options. In ACI, hardware-based underlay switching offers a significant advantage over various software-only solutions due to specialized forwarding chips. Thanks to Cisco’s own ASIC development, ACI brings many advanced features including security policy enforcement, microsegmentation, dynamic policy-based ...

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