[ns] TCP congestion window - Problem
Hi, This may be simple, but I am wondering if TCP Reno is working fine in NS-2. I traced cwnd_ size, and it showed ssth like this: 0 cwnd_ 1.000 0.04cwnd_ 2.000 0.09cwnd_ 3.000 0.1 cwnd_ 4.000 0.15cwnd_ 5.000 0.15cwnd_ 6.000 0.16cwnd_ 7.000 0.16cwnd_ 8.000 0.2 cwnd_ 9.000 0.2 cwnd_ 10.000 0.21cwnd_ 11.000 0.21cwnd_ 12.000 0.22cwnd_ 13.000 0.23cwnd_ 14.000 0.23cwnd_ 15.000 0.24cwnd_ 16.000 0.27cwnd_ 17.000 0.29cwnd_ 8.000 0.37cwnd_ 8.125 1.37cwnd_ 1.000 1.42cwnd_ 2.000 1.47cwnd_ 3.000 1.52cwnd_ 4.000 1.53cwnd_ 4.250 1.57cwnd_ 4.485 1.58cwnd_ 4.708 1.6 cwnd_ 4.921 At the begining TCP reno is performing slow Start till 0.27 when loss is detected. What happened next is strange for me... Shouldn't it reduce it's sending rate to 1 and start slow start again? It seems as it would be trying to perform Fast Retransmit/Fast Recovery instead, but finally it reduces cwnd_ to 1... Could anyone explain it to me?? Best regards, Kacper Sopot Toptrendy Festiwal 2007. Najważniejsze muzyczne wydarzenie roku! POLSAT 8-11 czerwca 2007 r. godz. 20:00 http://klik.wp.pl/?adr=www.toptrendy.wp.pl&sid=1170
[ns] Connection between applications and agents
Hi all, I am analyzing NS-2 code recently, to find out whta is the exact connection between Applications and Agents. Especially I am interested in a particular situations.. How are handled packets send by application to the agent, that arrived faster than agent can transmit them on the network ? Is there any queue for that, or what? I can't find any information in code about that. I hope someone could help me! Best regards, Kacper Zobacz, jaką walkę stoczy superbohater, by ocalić siebie i swych bliskich. A największa bitwa rozegra się w jego duszy. SPIDER-MAN 3 w kinach od 4 maja. http://klik.wp.pl/?adr=http%3A%2F%2Fadv.reklama.wp.pl%2Fas%2Fspiderman3.html&sid=1122
[ns] TFRC simulation problem
Hi Everyone! I have a strange TFRC simulation problem. I am using NS-2.29 in Red Hat. I hvae downloaded Sally Floyd's scripts form http://www.icir.org/tfrc/sims1.html. I run the tfrm12.com. Results I got were quite similar to that presented in the paper but there were several TCP connections that got suprisingly little bandwidth (almost zero). It can be observed whatever is the numer of flows. What can cause this problem ?? I haven't changed anything in the NS files. Best regards, Kacper Kurowski LUC BESSON przedstawia Największą europejską animację ostatnich lat!! ARTUR I MINIMKI - już w kinach!! http://klik.wp.pl/?adr=http%3A%2F%2Fadv.reklama.wp.pl%2Fas%2Fminimki.html&sid=984
