A situatedness‐based Knowledge Plane for autonomic networking

Abstract

SUMMARYIP networks, and particularly the Internet, were proposed to be a simple and robust support for homogeneous communications. This implies that only basic control mechanisms have to be performed by network elements. Communication management has to be performed by the terminals. However, the integration of new services and the increasing need for QoS require the network to be increasingly more fl exible and adaptive. New algorithms and protocols have been proposed by many research teams to address these issues, but these new algorithms tend to make network management and control more fl exible. Thus, manual confi guration of such fl exible and adaptive network architectures is very complex, if not impossible. Self-management is then a good opportunity to address this new complexity, and then to integrate more easily new services into the network. However, this self-management requires the equipment to carry much more knowledge and information than the actual control and management planes do. Global knowledge management schemes are therefore necessary to achieve this, including new policies for knowledge gathering, computing, sharing and providing. To address this particular need for knowledge management, several studies have proposed building a new plane, called the 'Knowledge Plane' (KP). This paper studies different propositions for this KP, and presents an original vision of what this KP should be. Our vision of the KP relies on the paradigm of situatedness. This paradigm was developed by research studies in the fi eld of multi-agent systems, which tend to solve complex problems using collaborative and autonomous agents (multi-agent technology has been largely described in Artifi cial Intelligence literature). These agents in our proposition are embedded within the network elements themselves. Their role is to share local and situated knowledge composing the global KP. We have also developed, as an illustration, a distributed intrusion detection system (IDS) based on the local IDS Snort.

Impact of Dynamics on Situated and Global Aggregation Schemes

“…In opposition to the global schemes where global aggregates are computed over the entire network, situated view approaches like [9,12,3] propose to reduce the costs of aggregation by limiting the knowledge of a node to a bounded neighborhood. Thus, apart its own local information each node collects data from its direct neighbors or a subset of the network nodes to compute a partial aggregate representing its view.…”

A Comparative Approach to Handle Ddos Attacks

“…During flooding of these packets to arbitrary ports makes the server response ‗Unreachable Destination' through large number of ICMP packets continuously. This makes the genuine service which is trying to access the attacked system is averted [1], [6].…”

“…It is to be noted that IP spoofing is done here in such a way that spoofed source IP address is the targeted host. Due to miscofiguration of routers all the ping requests are transferred to broadcast address of network which results all the present hosts in the network will receive this request and give echo replies to the spoofed address of the victim [6]. If network is quite large then this will ultimately consume all the bandwidth of victim whose address has been spoofed for echo request purpose.…”

Decentralized Task Allocation Mechanism Applied to QoS Routing in Home Network

“…It stores the data used by an agent in an homogeneous and structured way and provides diffusion mechanisms of this knowledge between the agents. -Situated View:It is the partial view that an agent has of its environment [2].…”