<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div>Dear Stefano</div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; background-color: transparent; font-style: normal;"><br></div><div><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;"><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;"><div class="y_msg_container">> It means that a single burst duration E(B) is 2 sec.<br><br>no, E(B) is in packets. It means that the *average* lenght of a burst of <br>lost packets is 2<br><br><span style="font-weight: bold;">Faraz</span> : Ok, If i am not wrong then it means E(B) = number of lost packets in burst.Which is equals to 2 in our example case.<br><br><br>during burst you have 100% loss because you are using the "simple <br>gilbert" model
using only two parameters<br><br>in order to provide a loss probability during bursts you have to provide <br>a third parameter (this is explained in the report)</div><div class="y_msg_container"><br></div><div class="y_msg_container"><span style="font-weight: bold;">Faraz</span> : I agreed with third parameter. But i have still one confusion which loss that "ploss (loss probability)" represents here.? <span style="font-size: 12pt;">Actually i want to know about overall packet loss.</span></div><div class="y_msg_container"><span style="font-size: 12pt;"><br></span></div><div class="y_msg_container"><span style="font-size: 12pt;">In example : ploss= 1/11= 0.09 >> Can i say it 9.1 % loss.</span><br></div><div class="y_msg_container"><br></div><div class="y_msg_container"><br></div><div class="y_msg_container"><br>>> example<br>><br>> > tc qdisc add dev eth0 root netem loss gemodel 5 50<br>>
><br>> > will setup a loss pattern where the average burst duration is<br>> > E(B) = 1/r = 2<br>> ><br>> > and the loss probability is<br>> > ploss = p/(p+r) = 0.05/0.55 = 1/11<br>><br>><br>><br>><br>><br>> Kind Regards<br>> Faraz<br>><br>> > > _______________________________________________<br>> > > Netem mailing list<br>> > > <a ymailto="mailto:Netem@lists.linux-foundation.org" href="mailto:Netem@lists.linux-foundation.org">Netem@lists.linux-foundation.org</a><br>> <mailto:<a ymailto="mailto:Netem@lists.linux-foundation.org" href="mailto:Netem@lists.linux-foundation.org">Netem@lists.linux-foundation.org</a>><br>> > <mailto:<a ymailto="mailto:Netem@lists.linux-foundation.org" href="mailto:Netem@lists.linux-foundation.org">Netem@lists.linux-foundation.org</a><br>>
<mailto:<a ymailto="mailto:Netem@lists.linux-foundation.org" href="mailto:Netem@lists.linux-foundation.org">Netem@lists.linux-foundation.org</a>>><br>> > > <a href="https://lists.linuxfoundation.org/mailman/listinfo/netem" target="_blank">https://lists.linuxfoundation.org/mailman/listinfo/netem</a><br>> > ><br>> ><br>> ><br>> > --<br>> > *******************************************************************<br>> > Stefano Salsano<br>> > Dipartimento Ingegneria Elettronica<br>> > Universita' di Roma "Tor Vergata"<br>> > Via del Politecnico, 1 - 00133 Roma - ITALY<br>> ><br>> > <a href="http://netgroup.uniroma2.it/Stefano_Salsano/" target="_blank">http://netgroup.uniroma2.it/Stefano_Salsano/</a><br>> ><br>> > E-mail : <a
ymailto="mailto:stefano.salsano@uniroma2.it" href="mailto:stefano.salsano@uniroma2.it">stefano.salsano@uniroma2.it</a><br>> <mailto:<a ymailto="mailto:stefano.salsano@uniroma2.it" href="mailto:stefano.salsano@uniroma2.it">stefano.salsano@uniroma2.it</a>> <mailto:<a ymailto="mailto:stefano.salsano@uniroma2.it" href="mailto:stefano.salsano@uniroma2.it">stefano.salsano@uniroma2.it</a><br>> <mailto:<a ymailto="mailto:stefano.salsano@uniroma2.it" href="mailto:stefano.salsano@uniroma2.it">stefano.salsano@uniroma2.it</a>>><br>> > Cell. : +39 320 4307310<br>> > Office : (Tel.) +39 06 72597770 (Fax.) +39 06 72597435<br>> > *******************************************************************<br>> > _______________________________________________<br>> > Netem mailing list<br>> > <a ymailto="mailto:Netem@lists.linux-foundation.org"
href="mailto:Netem@lists.linux-foundation.org">Netem@lists.linux-foundation.org</a><br>> <mailto:<a ymailto="mailto:Netem@lists.linux-foundation.org" href="mailto:Netem@lists.linux-foundation.org">Netem@lists.linux-foundation.org</a>><br>> <mailto:<a ymailto="mailto:Netem@lists.linux-foundation.org" href="mailto:Netem@lists.linux-foundation.org">Netem@lists.linux-foundation.org</a><br>> <mailto:<a ymailto="mailto:Netem@lists.linux-foundation.org" href="mailto:Netem@lists.linux-foundation.org">Netem@lists.linux-foundation.org</a>>><br>> > <a href="https://lists.linuxfoundation.org/mailman/listinfo/netem" target="_blank">https://lists.linuxfoundation.org/mailman/listinfo/netem</a><br>> ><br>><br>><br>> --<br>> *******************************************************************<br>> Stefano Salsano<br>> Dipartimento Ingegneria Elettronica<br>> Universita' di Roma "Tor Vergata"<br>>
Via del Politecnico, 1 - 00133 Roma - ITALY<br>><br>> <a href="http://netgroup.uniroma2.it/Stefano_Salsano/" target="_blank">http://netgroup.uniroma2.it/Stefano_Salsano/</a><br>><br>> E-mail : <a ymailto="mailto:stefano.salsano@uniroma2.it" href="mailto:stefano.salsano@uniroma2.it">stefano.salsano@uniroma2.it</a> <mailto:<a ymailto="mailto:stefano.salsano@uniroma2.it" href="mailto:stefano.salsano@uniroma2.it">stefano.salsano@uniroma2.it</a>><br>> Cell. : +39 320 4307310<br>> Office : (Tel.) +39 06 72597770 (Fax.) +39 06 72597435<br>> *******************************************************************<br>><br>><br><br><br>-- <br>*******************************************************************<br>Stefano Salsano<br>Dipartimento Ingegneria Elettronica<br>Universita' di Roma "Tor Vergata"<br>Via del Politecnico, 1 - 00133 Roma - ITALY<br><br><a href="http://netgroup.uniroma2.it/Stefano_Salsano/"
target="_blank">http://netgroup.uniroma2.it/Stefano_Salsano/</a><br><br>E-mail : <a ymailto="mailto:stefano.salsano@uniroma2.it" href="mailto:stefano.salsano@uniroma2.it">stefano.salsano@uniroma2.it</a><br>Cell. : +39 320 4307310<br>Office : (Tel.) +39 06 72597770 (Fax.) +39 06 72597435<br>*******************************************************************<br><br><br></div> </div> </div> </div></div></body></html>