Note: The documentation set for this product strives to use bias-free language. This white paper’s aim is to provide guidance about the options of designing the network and best practices with Cisco Nexus platform to support Kubernetes and Calico. Multiple options are available in Calico, however the most popular one is using non-overlay mode and leveraging the physical network to exchange routing information of Kubernetes nodes with Border Gateway Protocol (BGP). Calico is one of the favorite CNI plugins available for users to build their own Kubernetes cluster on-prem. Depending on the CNI chosen by the customer, requirements at the underlay network can be different. It provides network functions like connectivity of pod and service network, IP address management and security policies via a CNI (Container Network Interface) plugin. Kubernetes is one of the most popular container orchestrators (usually abbreviated as K8s) when users deploy applications on container platforms. ![]() This document mainly focuses on design considerations with examples of the configuration of related components. ![]() This document assumes the reader is familiar with the basic concepts of Kubernetes and Calico and has an existing fabric running using either eBGP-based IP fabric or VXLAN EVPN-based fabric.
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