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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=IT link=blue vlink=purple style='tab-interval:35.4pt'><div class=WordSection1><p class=MsoNormal><span style='mso-fareast-font-family:"Times New Roman"'><br>Il pattern di traffico <span class=SpellE>e'</span> totalmente diverso:<br><br>a) <span class=SpellE>contemporaneita'</span> (<span class=SpellE>concurrency</span>): durante l'evento DAZN tutti i clienti interessati all'evento sono online nello stesso istante (e parliamo di una massa di clienti non indifferente)<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-font-family:"Times New Roman"'><o:p> </o:p></span></p><p class=MsoNormal><span class=SpellE><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'>Netflix</span></span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'> fa molto più contemporaneità di <span class=SpellE>Dazn</span>, NFL sicuramente meno.. ma esistono altri servizi “live” sportivi e non <span style='mso-spacerun:yes'> </span>che fanno tanto, pensate ai live dei <span class=SpellE>gamers</span> su <span class=SpellE>switch</span> etc. Il mio punto era che se la rete era la problema soffrivano anche le altre servizi in quel momento.</span><span style='mso-fareast-font-family:"Times New Roman"'><br style='mso-special-character:line-break'><![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'><![endif]></span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-font-family:"Times New Roman"'>b) <span class=SpellE>buffering</span>: normalmente il <span class=SpellE>buffering</span> su eventi in broadcast <span class=SpellE>e'</span> di 1-2 secondi mentre con il video on <span class=SpellE>demand</span> (<span class=SpellE>netflix</span>) si possono mantenere agevolmente un paio di minuti di buffer se non anche decine di minuti di buffer. Per esempio <span class=SpellE>Sky</span> "inizia il download" e si mette da parte un bel po' di minuti di buffer del film/documentario/serie<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-font-family:"Times New Roman"'><o:p> </o:p></span></p><p class=MsoNormal><span class=SpellE><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'>Sky</span></span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'> sì , <span class=SpellE>Netflix</span> mica tanto idem <span class=SpellE>switch</span> <span class=SpellE>eurosport</span> e <span class=SpellE>youtube</span> <span class=SpellE>etc</span> se c’è congestione sulla rete gira la ruota “<span class=SpellE>buffering</span>” o scende la qualità del immagine.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-font-family:"Times New Roman"'>c) natura geografica dei ciuccia-contenuti: come ben spiegato in altra email, gli eventi DAZN hanno il problema che hanno spesso connotazione "geografica". Se pensiamo alla partita Napoli-Juventus e ipotizziamo che 50% so del Napoli e 50% della Juve (ipotesi errata ma facciamo finta) <span class=SpellE>e'</span> anche vero che i tifosi del Napoli saranno prevalentemente in Campania mentre gli Juventini maggiormente distribuiti in Italia. Ovvio che i kit che si intasano con maggiore <span class=SpellE>probabilita'</span> saranno quelli campani che hanno tifosi sono meno diluiti su territorio Italiano.<br style='mso-special-character:line-break'><![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'><![endif]></span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'>Su una partita importante come Napoli Juve lo guarderebbero ovunque e farebbe traffico in tutto <span class=SpellE>italia</span>, diverso un discorso <span class=SpellE>livorno</span> <span class=SpellE>pisa</span>…<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'>Per le rete da vero grande serverebbe capire dove sono i cache per distribuire il traffico e <span class=SpellE>piu</span> che kit si parla di link verso <span class=SpellE>dslam</span>/cabinet/centrale.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'>L’ultima che ho letto stimava circa 700k abbonati <span class=SpellE>dazn</span> <span style='mso-spacerun:yes'> </span><span style='mso-spacerun:yes'> </span><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-font-family:"Times New Roman"'>come spiegato sopra sono due casi d'uso diversi.<br style='mso-special-character:line-break'><![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'><![endif]></span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'>come esperimento ieri sera ho fatto alcuni prove con un amico durante le partite di NFL.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'>Servizio streaming NFL network, in ingresso da MIX<span style='mso-spacerun:yes'> </span>attraverso <span class=SpellE>Akamai</span> nella fascia oraria 20- 02<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D;mso-no-proof:yes'><img width=697 height=204 id="Picture_x0020_2" src="cid:image001.png@01D4A680.DD064F70"></span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'>Stesse partita in streaming sul DAZN in ingresso da MIX attraverso <span class=SpellE>Akamai</span> nella fascia 19-02<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D;mso-no-proof:yes'><img width=697 height=189 id="Picture_x0020_3" src="cid:image002.png@01D4A680.DD064F70" alt="Daily Graph"></span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'>Entrambe guardato attraverso link 100Mbps nella area di Milano sulla nostra rete <span style='mso-spacerun:yes'> </span>che era molto scarica in quanto ns servizi sono business <span class=SpellE>oriented</span>.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'>Nel primo caso di <span class=SpellE>nfl</span> network nessun interruzione o degrado di servizio, banda media osservato<span style='mso-spacerun:yes'> </span>tra 5-6Mbps, tutto guardato in HD.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'>Nel caso di DAZN problemi tra le 22:30-22:45<span style='mso-spacerun:yes'> </span>e disastro post 00:15, dopo le 00:15 non era possibile <span style='mso-spacerun:yes'> </span>guardare la partita in HD...Banda media in HD 7Mbps<span style='mso-spacerun:yes'> </span>dopo circa <span style='mso-spacerun:yes'> </span>3Mbps.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'>Nessun problema di degrado rilevato alle linea durante il disservizio ne di lentezze/<span class=SpellE>jitter</span> ne di banda.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'>Stessa rete, arrivando dalla stessa interconnessione utilizzando linee simile etc..<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'>Uno perfetto, per il secondo evito di inserire i messaggi del mio amico inviato in alcuni fasce orarie, <span style='mso-spacerun:yes'> </span>per il resto era molto contento del servizio.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'>A voi le conclusione<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'>Brian<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-bidi-font-family:"Times New Roman";color:#1F497D'><o:p> </o:p></span></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span lang=EN-US style='font-size:8.5pt;font-family:"Verdana","sans-serif";mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";color:#1F497D;mso-ansi-language:EN-US;mso-no-proof:yes'>Brian Turnbow</span></b><span lang=EN-US style='font-size:8.5pt;mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";color:#1F497D;mso-ansi-language:EN-US;mso-no-proof:yes'><br></span><span lang=EN-US style='font-size:8.5pt;font-family:"Verdana","sans-serif";mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";color:#1F497D;mso-ansi-language:EN-US;mso-no-proof:yes'>CTO</span><span lang=EN-US style='font-size:8.5pt;mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";color:#1F497D;mso-ansi-language:EN-US;mso-no-proof:yes'> <o:p></o:p></span></p><p class=MsoNormal><b><span lang=EN-US style='font-size:8.5pt;font-family:"Verdana","sans-serif";mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";color:#1F497D;mso-ansi-language:EN-US;mso-no-proof:yes'>TWT S.p.A.</span></b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";color:#1F497D;mso-ansi-language:EN-US;mso-no-proof:yes'><o:p></o:p></span></p></div><div style='border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt'><div><div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-family:"Calibri","sans-serif";mso-fareast-font-family:"Times New Roman";color:#1F497D'><br>Tornado però alla discorso iniziale.<br>Perché altri streaming anche live pare non hanno i problemi di dazn?<o:p></o:p></span></p></div></div><p class=MsoNormal><span style='mso-fareast-font-family:"Times New Roman"'><br><br><br><br><br style='mso-special-character:line-break'><![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'><![endif]><o:p></o:p></span></p><div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif";mso-fareast-font-family:"Times New Roman";color:#1F497D'>Io durante le partite guardo netflix o NFL senza problemi. Nessuno lamenta problemi d qualità streaming con altri servizi durante la partita.<br>Quindi la rete sotto sta reggendo il problema è nel servizo.<br><br>O No?<o:p></o:p></span></p></div></div><p class=MsoNormal><span style='mso-fareast-font-family:"Times New Roman"'><br><br><br>Saluti<br><br style='mso-special-character:line-break'><![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'><![endif]><o:p></o:p></span></p><div><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif";mso-fareast-font-family:"Times New Roman";color:#1F497D'><o:p> </o:p></span></p></div><div id=signature-x><p class=MsoNormal><span style='font-family:"Calibri","sans-serif";mso-fareast-font-family:"Times New Roman";color:#1F497D'>Sent from <a href="http://www.9folders.com/"><span style='color:#009BDF;text-decoration:none;text-underline:none'>Nine</span></a><o:p></o:p></span></p></div></div><div><div id="quoted_header"><div class=MsoNormal align=center style='text-align:center'><span style='mso-fareast-font-family:"Times New Roman"'><hr size=1 width="100%" noshade style='color:#E1E1E1' align=center></span></div><div><p class=MsoNormal style='mso-outline-level:1'><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-font-family:"Times New Roman"'>Da:</span></b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";mso-fareast-font-family:"Times New Roman"'> Paolo Di Francesco <a href="mailto:paolo.difrancesco@level7.it"><paolo.difrancesco@level7.it></a><br><b>Inviato:</b> Venerdì 4 Gennaio 2019 18:20<br><b>A:</b> Giorgio Bonfiglio<br><b>Cc:</b> <a href="mailto:itnog@lists.itnog.it">itnog@lists.itnog.it</a><br><b>Oggetto:</b> Re: [ITNOG] problemi di streaming di DAZN</span><span style='mso-fareast-font-family:"Times New Roman"'><o:p></o:p></span></p></div></div><p class=MsoNormal><span style='mso-fareast-font-family:"Times New Roman"'><o:p> </o:p></span></p><div id="quoted_body"><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;mso-border-left-alt:solid #CCCCCC .75pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm'><div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='mso-fareast-font-family:"Times New Roman"'>Il servizio Easy IP NGA prevede "il dimensionamento di rete prevede 750Kbit/s di banda media per accesso."<br><br>(notare la dicitura "medio")<br><br>Quindi ricordavo bene.<br><br>Da cui appunto c'e' un problema oggettivo tra quello che terze parti possono offrire rispetto alla offerta TIM diretta a clienti finali.<br><br>Come credo sia facile intuire non e' un problema tecnologico<br><br>Saluti<br><br><br style='mso-special-character:line-break'><![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'><![endif]><o:p></o:p></span></p></div><p class=MsoNormal><span style='mso-fareast-font-family:"Times New Roman"'><o:p> </o:p></span></p><div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal><span style='mso-fareast-font-family:"Times New Roman"'>On 4 Jan 2019, at 18:03, Paolo Di Francesco <<a href="mailto:paolo.difrancesco@level7.it">paolo.difrancesco@level7.it</a>> wrote:<o:p></o:p></span></p></div><div><div><p class=MsoNormal><span style='mso-fareast-font-family:"Times New Roman"'><br>in realta' dei 20Mb di ADSL/VDSL/FTTH, di garantito di banda [1] ce ne stanno pochi Kb<o:p></o:p></span></p></div></div></blockquote><div><p class=MsoNormal><span style='mso-fareast-font-family:"Times New Roman"'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='mso-fareast-font-family:"Times New Roman"'>Occhio che con FTTC/FTTH TIM ha *seriamente* rivisto le politiche di banda garantita (che in ADSL appunto erano pochi k): <a href="https://www.misurainternet.it/confronto_banda_minima/">https://www.misurainternet.it/confronto_banda_minima/</a><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='mso-fareast-font-family:"Times New Roman"'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='mso-fareast-font-family:"Times New Roman"'>Una FTTC 200M ha 50M di banda garantita che e’ un signor servizio. Ora si, si potrebbe comunque discutere del fatto che una banda garantita senza chiari SLA o rimborsi automatici valga poco o niente, ma la speranza e’ che TIM faccia il planning della sua rete considerando questo come un hard SLA.<o:p></o:p></span></p></div></div><p class=MsoNormal><span style='mso-fareast-font-family:"Times New Roman"'><o:p> </o:p></span></p><pre>-- <o:p></o:p></pre><pre> <o:p></o:p></pre><pre> <o:p></o:p></pre><pre>Ing. Paolo Di Francesco <o:p></o:p></pre><pre> <o:p></o:p></pre><pre>Level7 s.r.l. unipersonale <o:p></o:p></pre><pre> <o:p></o:p></pre><pre>Sede operativa: Largo Montalto, 5 - 90144 Palermo <o:p></o:p></pre><pre> <o:p></o:p></pre><pre>C.F. e P.IVA 05940050825 <o:p></o:p></pre><pre>Fax : +39-091-8772072 <o:p></o:p></pre><pre>assistenza: (+39) 091-8776432 <o:p></o:p></pre><pre>web: <a href="http://www.level7.it">http://www.level7.it</a><o:p></o:p></pre></blockquote></div></div><p class=MsoNormal><span style='mso-fareast-font-family:"Times New Roman"'><br><br style='mso-special-character:line-break'><![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'><![endif]><o:p></o:p></span></p><pre><o:p> </o:p></pre><p class=MsoNormal><span style='mso-fareast-font-family:"Times New Roman"'><br style='mso-special-character:line-break'><![if !supportLineBreakNewLine]><br style='mso-special-character:line-break'><![endif]><o:p></o:p></span></p><pre>-- <o:p></o:p></pre><pre><o:p> </o:p></pre><pre><o:p> </o:p></pre><pre>Ing. Paolo Di Francesco <o:p></o:p></pre><pre><o:p> </o:p></pre><pre>Level7 s.r.l. unipersonale<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>Sede operativa: Largo Montalto, 5 - 90144 Palermo<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>C.F. e P.IVA<span style='mso-spacerun:yes'> </span>05940050825 <o:p></o:p></pre><pre>Fax : +39-091-8772072<o:p></o:p></pre><pre>assistenza: (+39) 091-8776432<o:p></o:p></pre><pre>web: <a href="http://www.level7.it">http://www.level7.it</a><o:p></o:p></pre></div></div></body></html>