A protocol used to create the controllability layer (i.e., autonomously establish interconnectivity among a set of network resources).
Published in Chapter:
Dynamic and Scalable Control as a Foundation for Future Networks
Zoran Despotovic (Huawei, Germany), Xun Xiao (Huawei, Germany), Ramin Khalili (Huawei, Germany), Maja Curic (Huawei, Germany), and Artur Hecker (Huawei, Germany)
Copyright: © 2019
|Pages: 23
DOI: 10.4018/978-1-5225-7146-9.ch008
Abstract
The authors see problems with current network control models. Their control networks (i.e., control channels, necessary for control operation) are not thought of as part of the control model itself. Current network control is not transactional. Network updates are neither atomic nor isolated, and the application is not aware of the details of an update outcome. This chapter presents an alternative design in which the control channel is an integral part of the network control model. Its key part is a robust, in-band resource connectivity layer that interconnects all available network elements, including the controller(s). The control is also transactional. Applications can safely assume that their updates will not clash in the network, as well as that they will always affect the right, intended fraction of the network. Building on these two postulates, the authors see service scheduling as its third essential part of network control. The scheduling takes service requirements into account and assigns the services network resources that will meet their requirements.