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This paper describes our experience with concurrent asynchronous monitoring of large populations of end-user broadband-access routers. Despite of the wealth of research in large-scale monitoring, which assumes that it is possible to inquiry individual nodes efficiently, end-user access routers usually have manual legacy interfaces, either HTTP- or telnet-oriented. They seldom offer a direct interface...
Without the cooperation of internal nodes, the traceroute-based approaches and the SNMP-based approaches will fail to identify the topology of the work. Meanwhile, network tomography techniques can infer the logical topology of network without the cooperation of nodes. This paper focuses on the multiple source, multiple destination network tomography problem. The main contributions are as follows...
ForCES (forwarding and control element separation) and associated protocols introduce a new architecture for construction of a distributed network element (e.g., distributed routers). ForCES makes requirements for the support of network management protocols like SNMP, while does not specify how the requirements are implemented. In this paper, design and implementation of SNMP-based network management...
In this paper we propose a new approach for dealing with the ill-posed nature of traffic matrix estimation. We present three solution enhancers: an algorithm for deliberately changing link weights to obtain additional information that can make the underlying linear system full rank; a cyclo-stationary model to capture both long-term and short-term traffic variability, and a method for estimating the...
This paper presents a hierarchical management architecture which has been designed to work over next generation WPAN environments. In this sense, it copes with e.g. ad hoc networks (likely to play a fundamental role within future wireless networks) as well as with low capacity devices, such as sensors and actuators (thus, highlighting the heterogeneity that also characterize these environments). The...
Having an accurate network topology is vital for network performance optimization, configuration control, and fault monitoring...etc. In this paper, two network layer topology discovery algorithms for IPv6-only and IPv4-only networks, a data link layer topology discovery algorithm, and a transition detection algorithm of coexisting networks are presented. The network layer topology is constructed...
The significance of network topology discovery cannot be denied, especially for tasks like network management, network analysis or network visualization. In this paper we describe a novel topology discovery algorithm which is intelligent, efficient and self-learning. Sending ICMP requests to inactive hosts can waste considerable amount of time in the discovery process. We propose an algorithm that...
Network models today are often derived from two different methods. On one hand, detailed traffic models are generated based on traces from a single tap into the network. Alternatively, one can collect higher-level traffic-matrix data with SNMP from many routers. However, inferring flow-level details from such data is still an open research issue. Today it is infeasible to collect a fine-grained, packet-level...
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