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The drop activation function of the fast congestion notification (FN) mechanism

Fast Congestion Notification (FN) one of the proactive queue management mechanisms that practices congestion avoidance to help avoid the beginning of congestion by marking/dropping packets before the router’s queue gets full; and exercises congestion control, when congestion avoidance fails, by i...

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Main Authors: M. Kadhum, Mohammed, Hassan, Suhaidi
Format: Article
Language:English
Published: Kohat University of Science and Technology (KUST), Pakistan 2009
Subjects:
TK Electrical engineering. Electronics Nuclear engineering
Online Access:http://repo.uum.edu.my/2201/1/THE_DROP_ACTIVATION_FUNCTION_OF_THE_FAST_CONGESTION_NOTIFICA.pdf
http://repo.uum.edu.my/2201/
http://ijcnis.kust.edu.pk/article/viewFile/5261/3659
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spelling my.uum.repo.22012011-02-20T08:25:59Z http://repo.uum.edu.my/2201/ The drop activation function of the fast congestion notification (FN) mechanism M. Kadhum, Mohammed Hassan, Suhaidi TK Electrical engineering. Electronics Nuclear engineering Fast Congestion Notification (FN) one of the proactive queue management mechanisms that practices congestion avoidance to help avoid the beginning of congestion by marking/dropping packets before the router’s queue gets full; and exercises congestion control, when congestion avoidance fails, by increasing the rate of packet marking/dropping. Upon arrival of each packet, FN uses the instantaneous queue size and the average arrival rate to calculate the packet marking/dropping probability.This paper presents the Drop/Mark Activation Function, which is an internal (built in) function of FN marking/dropping probably function, and shows the conditions under which the FN will trigger a probabilistic packet marking/dropping. This paper shows that the FN’s drop activation function is given by L(Ri, Qcur) =(Ri −μ).T−(Qopt −Qcur)which compares the predicted and required/allowed changes in the queue level, over a time period, to decide whether to attempt or not to attempt packet dropping. L(Ri, Qcur) = 0 defines the set of the drop activation threshold , the set of (average rate, current queue size), (Ri, Qcur), points for which the required/allowed and predicted decrease/increase in the queue level exactly equal each other and that identify the boundary between the drop region (L(Ri, Qcur) > 0), the sets of points at which the packet dropping is attempted, and the no-drop region (L(Ri, Qcur) < 0), the set of points at which the packet dropping is not attempted. Kohat University of Science and Technology (KUST), Pakistan 2009-12 Article PeerReviewed application/pdf en http://repo.uum.edu.my/2201/1/THE_DROP_ACTIVATION_FUNCTION_OF_THE_FAST_CONGESTION_NOTIFICA.pdf M. Kadhum, Mohammed and Hassan, Suhaidi (2009) The drop activation function of the fast congestion notification (FN) mechanism. International Journal of Communication Networks and Information Security (IJCNIS), 1 (3). pp. 46-51. ISSN 2076-0930 http://ijcnis.kust.edu.pk/article/viewFile/5261/3659
institution Universiti Utara Malaysia
building UUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Utara Malaysia
content_source UUM Institutionali Repository
url_provider http://repo.uum.edu.my/
language English
topic TK Electrical engineering. Electronics Nuclear engineering
spellingShingle TK Electrical engineering. Electronics Nuclear engineering
M. Kadhum, Mohammed
Hassan, Suhaidi
The drop activation function of the fast congestion notification (FN) mechanism
description Fast Congestion Notification (FN) one of the proactive queue management mechanisms that practices congestion avoidance to help avoid the beginning of congestion by marking/dropping packets before the router’s queue gets full; and exercises congestion control, when congestion avoidance fails, by increasing the rate of packet marking/dropping. Upon arrival of each packet, FN uses the instantaneous queue size and the average arrival rate to calculate the packet marking/dropping probability.This paper presents the Drop/Mark Activation Function, which is an internal (built in) function of FN marking/dropping probably function, and shows the conditions under which the FN will trigger a probabilistic packet marking/dropping. This paper shows that the FN’s drop activation function is given by L(Ri, Qcur) =(Ri −μ).T−(Qopt −Qcur)which compares the predicted and required/allowed changes in the queue level, over a time period, to decide whether to attempt or not to attempt packet dropping. L(Ri, Qcur) = 0 defines the set of the drop activation threshold , the set of (average rate, current queue size), (Ri, Qcur), points for which the required/allowed and predicted decrease/increase in the queue level exactly equal each other and that identify the boundary between the drop region (L(Ri, Qcur) > 0), the sets of points at which the packet dropping is attempted, and the no-drop region (L(Ri, Qcur) < 0), the set of points at which the packet dropping is not attempted.
format Article
author M. Kadhum, Mohammed
Hassan, Suhaidi
author_facet M. Kadhum, Mohammed
Hassan, Suhaidi
author_sort M. Kadhum, Mohammed
title The drop activation function of the fast congestion notification (FN) mechanism
title_short The drop activation function of the fast congestion notification (FN) mechanism
title_full The drop activation function of the fast congestion notification (FN) mechanism
title_fullStr The drop activation function of the fast congestion notification (FN) mechanism
title_full_unstemmed The drop activation function of the fast congestion notification (FN) mechanism
title_sort drop activation function of the fast congestion notification (fn) mechanism
publisher Kohat University of Science and Technology (KUST), Pakistan
publishDate 2009
url http://repo.uum.edu.my/2201/1/THE_DROP_ACTIVATION_FUNCTION_OF_THE_FAST_CONGESTION_NOTIFICA.pdf
http://repo.uum.edu.my/2201/
http://ijcnis.kust.edu.pk/article/viewFile/5261/3659
_version_ 1644278175446859776
score 13.211869

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