Making On-Prem Bare-Metal Kubernetes Network Stack Telco Ready

Explore how Deutsche Telekom tackled the challenge of implementing Kubernetes at scale in a complex on-premises environment through this conference talk. Dive into the intricacies of creating a network fabric for bare-metal Kubernetes cloud that supports internal Cluster-as-a-Service offerings. Learn about the obstacles faced when dealing with legacy networks and historically grown, segmented networks with overlapping VRFs in a telco context. Discover innovative solutions, including IP fabrics, traffic flow optimization, and host integration into the fabric. Gain insights into making the network stack telco-ready for demanding applications like 5G core. Understand the implementation of VXLAN, network connectivity from the host, and the role of network operators and iNetplanner. Explore caveats and conclusions drawn from this groundbreaking project that reimagines network architecture for large-scale Kubernetes deployments in telecommunications environments.

Intro
Organization
Das SCHIFF
Cloud-Native in a Telco World
Mission
Problem Statement
Introducing IP Fabrics
Traffic Flow in an IP Fabric
Layer 2 View
Making the Host part of our IP Fabric
VXLAN View
Solution
Network Connectivity from the Host
Network Operatorii
Netplanner
Caveats
Conclusion