<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hello Alex,<div class="">thank you so much. i would like to say that i have used default parameters for bandwidth and buffer size . however, with increasing data rate and buffer size , i can prevent dropping on link layer.</div><div class="">Thank you so much for nice helps</div><div class="">best regards </div><div class=""><br class=""></div><div class=""><div><div style="margin: 0px; font-size: 11px; font-family: Menlo;" class=""><br class=""></div><div style="margin: 0px; font-size: 11px; font-family: Menlo;" class="">as you mentioned , with changing data rate and maxsize of </div><br class=""><br class=""><blockquote type="cite" class=""><div class="">On Jun 26, 2016, at 1:44 AM, Alex Afanasyev <<a href="mailto:aa@cs.ucla.edu" class="">aa@cs.ucla.edu</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">Hi Zeinab,<br class=""><br class="">The red line in the visualizer represents packet drops on the link layer. Did you configure very small bandwidths for the links or too small buffer sizes in the topology?<br class=""><br class="">--<br class="">Alex<br class=""><br class=""><blockquote type="cite" class=""> Hello,<br class="">I have implemented DFN topology in which each end node can be producer or consumer. I have ran topology with —vis . However , in the screenshot, when the simulation time is passed, i can see the red line which is going out from the node. (the snapshot is attachaed to this email)<br class="">i am wondering what can be the reason for that.<br class="">is there any one knows that what is happening that this red line is shown during simulation time.<br class="">Thanks in advance<br class="">best regards<br class=""></blockquote></div></blockquote></div><br class=""></div></body></html>