Abstract
This paper proposes a new paradigm for control plane in Time Sensitive Networks (TSN). An SDN controller proactively instructs network elements on the reconfigurations to perform locally if some specific events occur (e.g., failures, performance degradations). Instructions are given in the form of Finite State Machines (FSMs), which store information related to the actions that each network element should execute to react against a specific event. Thus, if such event occurs, the SDN controller is by-passed reducing reaction (e.g., recovery) time. Such an approach is here implemented for recovery upon failures in TSN. Experiments of failure recovery are carried out and measurements are presented comparing the FSM-based solution with a fully-centralized reactive restoration. Moreover, the proposed approach is compared through simulations against Frame Replication and Elimination for Reliability. Results will show how proactive FSM manipulation can strongly reduce recovery time in SDN-based TSN networks without overloading the network with frame replicas.
Highlights
Emerging services supported by a number of challenging applications like industrial automation, or autonomous driving, require efficient control and management of network resources to assure requirements by means of throughput and by means of delay and jitter
Finite State Machines (FSMs) can be installed by an Software Defined Networking (SDN) controller in a device agent which is responsible to autonomously perform operations associated to a specific network state
In order interact with the NETCONF server we have developed a Sysrepo plugin that implements the actions related to the state change in the FSM YANG model
Summary
Emerging services supported by a number of challenging applications like industrial automation, or autonomous driving, require efficient control and management of network resources to assure requirements by means of throughput and by means of delay and jitter. FSM can be installed by an SDN controller in a device agent which is responsible to autonomously perform operations associated to a specific network state. According to [13], the dynamic FSM loading mechanism can be used in a variety of use cases and applications, including: i) recovery and transmission adaptation in optical networks [14], [15]; ii) network telemetry to define and embed custom data probes into data plane devices; iii) monitoring optimization of packet loss and delay for real time systems. In a context of an SDN scenario, we propose to transfer – through the NETCONF protocol [8] and FSM – control logics into the agents of TSN devices. Measurements and simulations show that DRTSN permits to achieve faster recovery time than the reactive restoration, without overloading the network as FRER.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
