{"version":"1.0","provider_name":"Salzburg Research Forschungsgesellschaft","provider_url":"https:\/\/www.salzburgresearch.at\/en\/","author_name":"Birgit Strohmeier","author_url":"https:\/\/www.salzburgresearch.at\/en\/author\/birgit\/","title":"One-Way-Delay Measurements with CM Toolset - Salzburg Research Forschungsgesellschaft","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"IhNiAUWP4Z\"><a href=\"https:\/\/www.salzburgresearch.at\/en\/publikation\/one-way-delay-measurements-with-cm-toolset\/\">One-Way-Delay Measurements with CM Toolset<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.salzburgresearch.at\/en\/publikation\/one-way-delay-measurements-with-cm-toolset\/embed\/#?secret=IhNiAUWP4Z\" width=\"600\" height=\"338\" title=\"&#8220;One-Way-Delay Measurements with CM Toolset&#8221; &#8212; Salzburg Research Forschungsgesellschaft\" data-secret=\"IhNiAUWP4Z\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.salzburgresearch.at\/wp-includes\/js\/wp-embed.min.js\n\/* ]]> *\/\n<\/script>\n","description":"Internet Quality of Service (QoS) is an actual research topic. The need for more or less guaranteed transmission rates (e.g. for bulk-data transfer applications), upper bounds for transmission delay and jitter (e.g. for real time applications like IP telephony, video-conferencing) stimulated the development of QoS transmission technologies like ATM, IP-RSVP and the actual discussion about Diff-Serv mechanisms. This paper describes the implementation and the first measurement trials with the One-Way-Delay measurement components of CM-Toolset. The overall tool architecture consists of a distributed system of load generators and receivers (agents) and a measurement server, which stores the measurement results in a data-base. To measure the exact One-Way-Delay (OWD) the synchronised GPS clock system was integrated. The measurements were realised in a 4 hop heterogeneous IP and ATM network. The clock drift during the loop measurements was about 10ms, linear and deterministic. So the drift could be eliminated by statistical computations. The measurements were made for UDP [&hellip;]"}