Multus is a meta-CNI plugin that enables multiple network interfaces in Kubernetes pods, and its IPVLAN mode offers a lightweight alternative to MACVLAN by sharing the host's MAC address. This approach reduces MAC address consumption and improves scalability in large clusters. The post details how to configure Multus with IPVLAN, including the use of Whereabouts for dynamic IP address management. It also discusses practical scenarios such as separating data plane and control plane traffic in telco or edge deployments. For Kubernetes engineers managing multi-network setups, understanding IPVLAN mode is valuable for optimizing performance and resource usage. While the concept is not new, the step-by-step configuration guide is useful for practitioners. The post assumes familiarity with CNI concepts and Kubernetes networking basics.
This post explains the Multus CNI plugin's IPVLAN mode, which allows multiple network interfaces per pod in Kubernetes. It covers configuration, integration with Whereabouts for IP management, and use cases like network function virtualization. The topic is evergreen for Kubernetes networking but not groundbreaking.