Cooperative Learning for Disaggregated Delay Modeling in Multidomain Networks

Abstract

Accurate delay estimation is one of the enablers of future network connectivity services, as it facilitates the application layer to anticipate network performance. If such connectivity services require isolation (slicing), such delay estimation should not be limited to a maximum value defined in the Service Level Agreement, but to a finer-grained description of the expected delay in the form of, e.g., a continuous function of the load. Obtaining accurate end-to-end (e2e) delay modeling is even more challenging in a multi-operator (Multi-AS) scenario, where the provisioning of e2e connectivity services is provided across heterogeneous multi-operator (Multi-AS or just domains) networks. In this work, we propose a collaborative environment, where each domain Software Defined Networking (SDN) controller models intra-domain delay components of inter-domain paths and share those models with a broker system providing the e2e connectivity services. The broker, in turn, models the delay of inter-domain links based on e2e monitoring and the received intra-domain models. Exhaustive simulation results show that composing e2e models as the summation of intra-domain network and inter-domain link delay models provides many benefits and increasing performance over the models obtained from e2e measurements.

Intent-Based Networking for Zero-Touch Optical Networking

“…Reporting is intended to generate descriptive outputs, e.g., statistical summaries, as well as knowledge transfer of main key performance indicators of the service. Differentiated reports can be generated, so applications can reconfigure policies to adjust to service requirements and the network management can gather knowledge transferred for different services and processed jointly to improve actions [8], [9].…”

Intent-based networking and its application to optical networks [Invited Tutorial]

“…Reporting is intended to generate descriptive outputs, e.g., statistical summaries, as well as knowledge transfer of main key performance indicators of the service. Differentiated reports can be generated, so applications can reconfigure policies to adjust to service requirements and the network management can gather knowledge transferred for different services and processed jointly to improve actions [26][27][28].…”

Disaggregated Delay Modeling in Multidomain Networks

“…Nevertheless, inter-domain delay measurements are not generally available, specially to third domains or customers. In this paper, we summarize our previous work in [5] and focus on inter-domain link modeling, intra-domain model correction, and inaccuracy detection and localization.…”