Information in networked systems often has spatial semantics: routers, sensors, or virtual machines have coordinates in a geographical or virtual space, for instance. In this paper, we propose a pe ...
This document describes how to extend the existing Active Measurement
Protocol, in order to implement alternate marking methodology detailed
in [I-D.ietf-ippm-alt-mark]. The extension for Two-Way Active
Measurement Protocol (TWAMP) RFC 5357 [RFC5357] and One-way Active
Measurement Protocol (OWAMP) RFC 4656 [RFC4656] will be considered.
RFC6374 [RFC6374] Use Case is also reported. This proposal defines a
simplified mechanism with benefits to the metric precision and
computational load. Hybrid measurements are also enabled.
In this demonstration, we present CloudSearch, a search system for an IaaS cloud. The search system is realized as a network of search nodes with identical capabilities, whereby the nodes run as daemons in the servers that provide cloud services. The nodes form a search plane, which realizes in-network distributed search using an echo protocol. An administrator can access configuration/operational data in the cloud using a web-based search interface in a management station.
With significant advances in holographic display technology, a plethora of interactive applications, such as tele-conferencing and tele-surgery, are well on their way to integrating holographic technologies. However, hologram-based applications will place significant demands on networking infrastructure, which are not supported today. These include support for ultra-low delays, high bandwidth, and the ability to coordinate, synchronize, and dynamically adapt multiple data streams. This article articulates these challenges and points out gaps in existing networks that solutions must address. In addition, it provides an experimental analysis of novel network architectures that address one of these challenges, namely the ability to dynamically set up new flows with very low latency incurred by the first packet.
Threshold crossing alerts (TCAs) indicate to a management system that a management variable, associated with the state, performance or health of the network, has crossed a certain threshold. In this paper, we report on implementing and evaluating TCA-GAP, a distributed protocol for detecting network-wide TCAs, which reports threshold crossings on aggregates, such as SUM, AVERAGE, or MAX of device counters. We present a concept for assessing the quality of detecting network-wide TCAs, which we apply to evaluate TCA-GAP on a lab testbed. First, we evaluate the correctness of the protocol by determining the correctly detected threshold crossings, the false positives and the false negatives. Second, for the correctly detected threshold crossings, we measure the delays between the time a crossing was reported by the protocol and the time of its actual occurrence. Finally, we demonstrate that the fundamental tradeoff between the quality of TCA detection and the management overhead can be controlled in TCA-GAP by modifying the maximum message rate on the management overlay.
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