Experimental evaluation of dynamic resource orchestration in multi-layer (packet over flexi-grid optical) networks

Abstract

In future 5G infrastructures, network services will be deployed through sets of Virtual Network Functions (VNFs) leveraging the advantages of both Software Defined Networking (SDN) and Network Function Virtualization (NFV). A network service is composed of an ordered sequence of VNFs, i.e., VNF Forwarding Graph (VNFFG), deployed across distributed data centers (DCs). Herein, we present a Cloud/Network Orchestrator which dynamically processes and accommodates VNFFG requests over a pool of DCs interconnected by a multilayer (packet/flexi-grid optical) transport network infrastructure. We propose two different cloud and network resource allocation algorithms aiming at: i) minimizing the distance between the selected DCs, and ii) minimizing the load (i.e., consumed cloud resources) of the chosen DCs. Both algorithms run on a Cloud/Network Orchestrator and are experimentally validated and benchmarked on the CTTC ADRENALINE testbed.

The conceptualization of dynamic resource orchestration framework as an anchor for organizational resilience

“…The paper argues that organizations that orchestrate dynamic resources set themselves up with the agility needed to survive and thrive during disruptions. The paper does not claim to be the originator of dynamic resource orchestration framework but highlights and demonstrates that dynamic resource orchestration framework is an idea whose time has come (Fichera et al, 2020). Nevertheless, it is worth mentioning that Fichera et al's (2020) conceptualization of dynamic resource orchestration framework makes a limited contribution to strategic management theory due to their operationalization within the context of computer networking.…”