SDN Enabled Broadband Access (SEBA) is an initiative started by AT&T and ONF. It is an exemplar implementation based on the edge computing reference design jointly developed by a number of operators working with ONF based on the CORD project (Central Office Re-architected as a Datacenter).
This tutorial will explain the basic hardware and software elements of CORD with a focus on SEBA as an exemplar implementation. We will start by briefly discussing the key challenges facing the operators and vendors and how to meet them through CORD. Then we address the technologies of CORD (SDN, NFV and Cloud) and describe its architecture. After that we will explain the two basic steps for transforming a traditional Central Office (CO) into a data centre through CORD. A use case of CORD is then discussed through SEBA (the successor of residential CORD, R-CORD). In particular, we will delve deep into the components that make up SEBA including Open Networking Operating System (ONOS) SDN Controller, VOLTHA project, Network Edge Mediator ( NEM) based on XOS and controlled for example by ONAP, Optical Line Terminations (OLTs) , such as the first white box from EdgeCore Optical Network Units (ONUs), Passive Optical Network (PON), and Aggregation (AGG) switches, describing how they all fit together in a modular way. We will show a demo of SEBA with simulated subscribers (using BBSim or PONsim) and provide full instructions for installing SEBA components within a Kubernetes cluster, e.g., three physical compute nodes or virtual Machines. We will explain how to run an end-to-end network slicing with commodity Open hardware and open-source software stack.