A P2P overlay system for network anomaly detection in ISP infrastructures

This paper presents a P2P Overlay system for network anomaly detection, providing ISP network administrators with a versatile, easily configurable and useful tool to monitor the network infrastructures. In this context, this document describes the system general architecture and the main entities that integrate the proposed overlay system. Some technical details of the system will be provided, along with particular aspects of a real implementation of a system prototype, which was made using the JAVA language. The robustness and usefulness of the devised solution is proven resorting to the CORE network emulator platform. Such platform allows emulating a real ISP network infrastructure, over which a prototype of the proposed overlay system and integrating entities is tested and the corresponding results analysed. Some illustrative use cases of the system operation will be also presented and analysed.This work has been supported by FCT Fundacao para a Ciencia e Tecnologia within the Project Scope: UID/CEC/00319/2019

An adaptable and ISP-friendly multicast overlay network

Multicast is a group communication paradigm which aims at reducing, as much as possible, the amount of data generated into the network. Thus, IP Multicast presents itself as a technology that allows data to be distributed in such a way that the least amount of replicas of the same packet is placed into the network. However, the limited deployment of IP level Multicast protocols has lead to new approaches, in the application-level, implementing multicast using end systems and not routers. This concept has resulted in different approaches denominated as Application-Layer Multicast (ALM) or Overlay Multicast based systems. In this context, this work presents and analyzes an overlay multicast system envisioned to be highly reconfigurable and adaptable to different usability contexts. Such system versatility is not only present in the capability to construct distinct multicast distribution trees, but also in the integration of several advanced Traffic Engineering mechanisms based on collaborative efforts between the overlay and the Internet Service Provider (ISP) levels. Results from the proposed overlay system and associated mechanisms are obtained using a real system implementation which has been tested in a network emulation tool, with the experimental scenarios encompassing both single and multiple Autonomous Systems (AS).This work has been supported by COMPETE: POCI-01-0145-FEDER-007043 and FCT Fundacao para a Ciencia e Tecnologia within the Project Scope: UID/CEC/00319/2013