DACoRM: A coordinated, decentralized and adaptive network resource management scheme

Abstract

Abstract-In order to meet the requirements of emerging demanding services, network resource management functionality that is decentralized, flexible and adaptive to traffic and network dynamics is of paramount importance. In this paper we describe the main mechanisms of DACoRM, a new intra-domain adaptive resource management approach for IP networks. Based on path diversity provided by multi-topology routing, our approach controls the distribution of traffic load in the network in an adaptive manner through periodical re-configurations that uses real-time monitoring information. The re-configuration actions performed are decided in a coordinated fashion between a set of source nodes that form an in-network overlay. We evaluate the overall performance of our approach using realistic network topologies. Results show that near-optimal network performance in terms of resource utilization can be achieved in scalable manner.

A hybrid management substrate structure for adaptive network resource management

“…Due to their characteristics, both models present some limitations in terms of scalability when the number of M S nodes increases. In the case of the full-mesh, this incurs a significant increase in the volume of substrate information to be maintained locally at each M S node and in the case of the ring model, it significantly affects the total communication delay [2]. In order to overcome the limitations of these two simple structures, the design of a more sophisticated model is investigated to organize M S nodes.…”

“…Given the characteristics of the ring topology, the communication between M S nodes relies on a hop-by-hop mechanism [2]. In order to communicate with any other node, a message needs to be sent over the ring until it reaches its destination.…”

“…In the full-mesh M S topology model, the communication overhead incurred when a node requests information is proportional to the number of nodes in the M S, since a message is exchanged with every other node [2]. According to the communication protocol used in the hybrid model, the total number of messages exchanged depends on the communication mode considered.…”

“…The network nodes participating in the resource management process form a management substrate, which is a logical structure used to facilitate the exchange of information between distributed decision-making points. Such a framework was used in our previous work for the purpose of adaptive traffic engineering [2], energy efficiency [3] and in-network cache management [4]. However, due to the distributed nature of the decision-making process, the performance of the proposed management scheme, in terms of communication overhead, can be affected by the structure of the management substrate.…”

“…However, due to the distributed nature of the decision-making process, the performance of the proposed management scheme, in terms of communication overhead, can be affected by the structure of the management substrate. In [2], we have considered the use of simple topology structures (i.e. full-mesh and ring), which may have some limitations in terms of scalability in practice.…”