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    <font face="Helvetica, Arial, sans-serif">Πράγματι δεν φαίνεται να
      υπάρχει αυξημένο latency και στο smokeping του GR-IX. Ελαφρύ
      packet loss όμως υπάρχει και συμβαδίζει με τις ώρες που δείχνει το
      γράφημα του Γιώργου.<br>
      <img moz-do-not-send="false"
        src="cid:part1.94F9DF12.CACFAEE9@koutroumpas.gr" alt=""
        width="697" height="310"><br>
<a class="moz-txt-link-freetext" href="https://portal.gr-ix.gr//smokeping/smokeping.cgi/?target=infra_1.vlan_1.vlanint_65_ipv4">https://portal.gr-ix.gr//smokeping/smokeping.cgi/?target=infra_1.vlan_1.vlanint_65_ipv4</a><br>
      <br>
      Σε trace από OTE προς Hyperhosting (μέσω Forthnet) είναι σαφές ότι
      το latency ξεκίναγε στο hop </font><font face="Helvetica, Arial,
      sans-serif"><font face="Helvetica, Arial, sans-serif">176.126.38.33<br>
        <img moz-do-not-send="false"
          src="cid:part2.2FC64F87.2BD3336C@koutroumpas.gr" alt=""
          width="733" height="129"><br>
      </font></font><br>
    <font face="Helvetica, Arial, sans-serif"><font face="Helvetica,
        Arial, sans-serif"><font face="Helvetica, Arial, sans-serif"><font
            face="Helvetica, Arial, sans-serif">Για τον αποκλεισμό
            περίπτωσης λάθος στοιχείων λόγω ασύμμετρης δρομολόγησης,
            έκανα pings απευθείας από router σε router στο GR-IX
            (CityofAthens>Forthnet) ώστε να εξαλειφθεί κάθε
            ενδεχόμενο προβλήματος σε hop που δεν φαίνεται στο trace.<br>
          </font></font></font></font><font face="Helvetica, Arial,
      sans-serif"><font face="Helvetica, Arial, sans-serif"><font
          face="Helvetica, Arial, sans-serif">Κάνοντας ping από AS209608<b>
          </b>απευθείας από τον router (176.126.38.39) προς το άκρο της
          Forthnet (176.126.38.33) στο GR-IX έχω rtt 2ms.<br>
          Αλλά ανά μερικά δευτερόλεπτα το latency ανέβαινε στα 10-11ms.
          Κράταγε για ~10seconds και μετά πάλι 2ms. Κατά την διάρκεια
          του lag έχανε και 1-2 πακέτα.<br>
          Την ίδια στιγμή κάνοντας ping προς οποιοδήποτε άλλο μέλος του
          GR-IX είχα 1-2ms σχεδόν με όλους.<br>
          <br>
          Αυτό γινόταν τις ώρες που φαίνεται το packet loss/lag στο
          smokeping graph του Γιώργου.<br>
          Φαίνεται πως εδώ και 1μιση ώρα περίπου έχει σταματήσει το lag.<br>
          <br>
          <br>
        </font>Μιχάλη, σχετικά με το γράφημα του smokeping που παρέθεσε
        ο Γιώργος, είναι από γραμμή VDSL OTE προς IP του Γιώργου (όπου η
        Forthnet είναι ο upstream του).<br>
        Δεν είναι ιδανικό μιας και over DSL <i>μπορεί </i>να υπάρχει
        πολύς θόρυβος στο γράφημα, αλλά στην προκειμένη περίπτωση
        φαίνεται καθαρά πως το πρόβλημα δεν ήταν στην γραμμή.<br>
        <br>
        Παραθέτω τα ίδιο γράφημα σε αντιπαράθεση με αντίστοιχο γράφημα
        που τσεκάρει IP της Otenet από την ίδια γραμμή.<br>
        <img moz-do-not-send="false"
          src="cid:part3.F968D4BD.45DB5D50@koutroumpas.gr" alt=""
          width="597" height="255"><br>
        <img moz-do-not-send="false"
          src="cid:part4.718F07B4.C4BD961A@koutroumpas.gr" alt=""
          width="597" height="255"><br>
        <br>
        Τέλος, παραθέτω και ένα γράφημα από το Grafana του Γιώργου που
        δείχνει το latency/loss μέσα από το δίκτυο του προς ΟΤΕ.<br>
        Αντίστοιχα προς οποιονδήποτε άλλο προορισμό που δεν πέρναγε από
        GR-IX δεν έχει σημειωθεί κανένα spike στο latency.<br>
        <img moz-do-not-send="false"
          src="cid:part5.3D19970A.A89E0E81@koutroumpas.gr" alt=""
          width="1095" height="902"><br>
        <br>
      </font></font><font face="Helvetica, Arial, sans-serif"><font
        face="Helvetica, Arial, sans-serif"><font face="Helvetica,
          Arial, sans-serif"><font face="Helvetica, Arial, sans-serif"><br>
            Έχει ενδιαφέρον το ότι τις ίδιες ώρες που παρατηρήσαμε αυτή
            τη συμπεριφορά, υπήρχαν spikes στην κίνηση του GR-IX, τα
            οποία τώρα έχουν σταματήσει και παράλληλα και το
            latency/loss που αντιμετωπίζαμε.<br>
            <img src="cid:part6.269AD22B.C1A7A643@koutroumpas.gr" alt=""
              width="687" height="256"><br>
            <br>
          </font></font>Πρόκειται για σατανική σύμπτωση ή είναι ένδειξη
        κάποιου προβλήματος που δεν έτυχε να αντιληφθούν ακόμα άλλοι;<br>
        <br>
      </font></font>
    <div class="moz-signature">
      <br>
      ---------------------------------<br>
      Regards,<br>
      Vaggelis Koutroumpas.<br>
      ---------------------------------<br>
    </div>
    <div class="moz-cite-prefix">On 15/5/2020 5:43 μ.μ., Stathis
      Oureilidis wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:2ace0bf7-e906-3699-23b8-8352654ad1eb@fastpath.gr">
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      <p>Καλησπέρα,</p>
      <p><br>
      </p>
      <p>Ούτε εμείς έχουμε παρατηρήσει κάποιο πρόβλημα/αυξημένα
        latencies με GR-IX.</p>
      <p><br>
      </p>
      <p>Στάθης<br>
      </p>
      <div class="moz-cite-prefix">On 15/5/2020 5:24 μ.μ., Spyros
        Kakaroukas wrote:<br>
      </div>
      <blockquote type="cite"
        cite="mid:34D83C22-E217-4F16-A28F-3F32161650AB@connecticore.com">
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          <p class="MsoNormal"><span lang="EL">Καλησπέρα Γιώργο και
              Μιχάλη,<o:p></o:p></span></p>
          <p class="MsoNormal"><span lang="EL"><o:p> </o:p></span></p>
          <p class="MsoNormal"><span lang="EL">Δεν έχω παρατηρήσει
              κάποιο πρόβλημα με τον </span> <span lang="EN-US">GR</span><span
              lang="EL">-</span><span lang="EN-US">IX</span><span
              lang="EN-US"> </span><span lang="EL">σήμερα.<o:p></o:p></span></p>
          <p class="MsoNormal"><span lang="EL"><o:p> </o:p></span></p>
          <div>
            <div>
              <p class="MsoNormal"><span
                  style="font-size:10.5pt;color:black">My thoughts and
                  words are my own.<o:p></o:p></span></p>
            </div>
            <div>
              <p class="MsoNormal"><span
                  style="font-size:10.5pt;color:black"><o:p> </o:p></span></p>
            </div>
          </div>
          <p class="MsoNormal"><span
              style="font-size:10.5pt;color:black">Spyros</span><o:p></o:p></p>
          <p class="MsoNormal"><o:p> </o:p></p>
          <div style="border:none;border-top:solid #B5C4DF
            1.0pt;padding:3.0pt 0cm 0cm 0cm">
            <p class="MsoNormal"><b><span
                  style="font-size:12.0pt;color:black">From: </span></b><span
                style="font-size:12.0pt;color:black">grnog-members <a
                  class="moz-txt-link-rfc2396E"
                  href="mailto:grnog-members-bounces@nogalliance.org"
                  moz-do-not-send="true"><grnog-members-bounces@nogalliance.org></a>
                on behalf of Michalis Oikonomakos <a
                  class="moz-txt-link-rfc2396E"
                  href="mailto:moikonom@gmail.com"
                  moz-do-not-send="true"><moikonom@gmail.com></a><br>
                <b>Date: </b>Friday, 15 May 2020 at 17:07<br>
                <b>To: </b>George Vardikos <a
                  class="moz-txt-link-rfc2396E"
                  href="mailto:gvard@hyperhosting.gr"
                  moz-do-not-send="true"><gvard@hyperhosting.gr></a><br>
                <b>Cc: </b><a class="moz-txt-link-rfc2396E"
                  href="mailto:members@grnog.gr" moz-do-not-send="true">"members@grnog.gr"</a>
                <a class="moz-txt-link-rfc2396E"
                  href="mailto:members@grnog.gr" moz-do-not-send="true"><members@grnog.gr></a><br>
                <b>Subject: </b>Re: [grnog] Latency με GR-IX<o:p></o:p></span></p>
          </div>
          <div>
            <p class="MsoNormal"><o:p> </o:p></p>
          </div>
          <div>
            <p class="MsoNormal">Γιώργο καλησπέρα, <o:p></o:p></p>
            <div>
              <p class="MsoNormal"><o:p> </o:p></p>
            </div>
            <div>
              <p class="MsoNormal">/gr-ix hat on<o:p></o:p></p>
            </div>
            <div>
              <p class="MsoNormal"><o:p> </o:p></p>
            </div>
            <div>
              <p class="MsoNormal">Όσο αφορά το πρώτο διάγραμμα που
                έστειλες, δεν φαίνεται από πού / προς πού είναι αυτές οι
                μετρήσεις, οπότε δεν μπορώ να σε βοηθήσω περαιτέρω.<o:p></o:p></p>
            </div>
            <div>
              <p class="MsoNormal">Όσο αφορά το δεύτερο διάγραμμα, αυτό
                δηλαδή της κίνησης του GR-IX, είναι απόλυτα ορθό. Δεν
                συνιστά κάποιο πρόβλημα της πλατφόρμας. Αν θες
                περισσότερες λεπτομέρειες για το συγκεκριμένο,
                ευχαρίστως να τα πούμε off-list.<o:p></o:p></p>
            </div>
            <div>
              <p class="MsoNormal"><o:p> </o:p></p>
            </div>
            <div>
              <p class="MsoNormal">Δεν έχω δεδομένα να σε βοηθήσω
                περισσότερο, παρόλα αυτά, θα σου πρότεινα εκ πρώτης να
                μιλήσεις και με τον upstream σου.<o:p></o:p></p>
            </div>
            <div>
              <p class="MsoNormal"><o:p> </o:p></p>
            </div>
            <div>
              <p class="MsoNormal">/gr-ix hat off<o:p></o:p></p>
            </div>
            <div>
              <p class="MsoNormal"><o:p> </o:p></p>
            </div>
            <div>
              <p class="MsoNormal"><o:p> </o:p></p>
            </div>
            <div>
              <p class="MsoNormal">Είμαι στη διάθεσή σου, για
                οποιαδήποτε περαιτέρω βοήθεια.<o:p></o:p></p>
            </div>
            <div>
              <p class="MsoNormal"><o:p> </o:p></p>
            </div>
            <div>
              <p class="MsoNormal">Χαιρετώ,<o:p></o:p></p>
            </div>
            <div>
              <p class="MsoNormal">Μιχάλης<o:p></o:p></p>
            </div>
            <div>
              <p class="MsoNormal"><o:p> </o:p></p>
            </div>
            <div>
              <p class="MsoNormal"><o:p> </o:p></p>
            </div>
          </div>
          <p class="MsoNormal"><o:p> </o:p></p>
          <div>
            <div>
              <p class="MsoNormal">On Fri, May 15, 2020 at 4:29 PM
                George Vardikos <<a
                  href="mailto:gvard@hyperhosting.gr"
                  moz-do-not-send="true">gvard@hyperhosting.gr</a>>
                wrote:<o:p></o:p></p>
            </div>
            <blockquote style="border:none;border-left:solid #CCCCCC
              1.0pt;padding:0cm 0cm 0cm
              6.0pt;margin-left:4.8pt;margin-right:0cm">
              <div>
                <div>
                  <p class="MsoNormal"
                    style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EL">Καλησπέρα,</span><span lang="EL"><o:p></o:p></span></p>
                  <p class="MsoNormal"
                    style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EL"> </span><span lang="EL"><o:p></o:p></span></p>
                  <p class="MsoNormal"
                    style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EL">Σήμερα γενικώς έχω </span><span
                      style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EN-US">packet loss </span><span
                      style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EL">στο </span><span
                      style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EN-US">GR</span><span
                      style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EL">-</span><span
                      style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EN-US">IX</span><span
                      style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EL">:</span><span lang="EL"><o:p></o:p></span></p>
                  <p class="MsoNormal"
                    style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EL"> </span><span lang="EL"><o:p></o:p></span></p>
                  <p class="MsoNormal"
                    style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
                      lang="EL"><img
                        style="width:6.1562in;height:2.677in"
                        id="gmail-m_6290085922238440830Picture_x0020_2"
src="cid:part13.ABD5D5D9.EC0B6EF7@koutroumpas.gr"
                        alt="cid:17218949f604cff311" class=""
                        width="591" height="257" border="0"><o:p></o:p></span></p>
                  <p class="MsoNormal"
                    style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EL"> </span><span lang="EL"><o:p></o:p></span></p>
                  <p class="MsoNormal"
                    style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EL">Βλέπω πως αντίστοιχα </span><span
                      style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EN-US">spikes </span><span
                      style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EL">φαίνονται και στο </span><span
                      style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EN-US">public </span><span
                      style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EL">γράφημα του </span><span
                      style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EN-US">GR</span><span
                      style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EL">-</span><span
                      style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EN-US">IX</span><span
                      style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EL">:</span><span lang="EL"><o:p></o:p></span></p>
                  <p class="MsoNormal"
                    style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EL"> </span><span lang="EL"><o:p></o:p></span></p>
                  <p class="MsoNormal"
                    style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
                      lang="EL"><img
                        style="width:7.1458in;height:2.6979in"
                        id="gmail-m_6290085922238440830Picture_x0020_3"
src="cid:part14.1EB8B391.EE88AFF2@koutroumpas.gr"
                        alt="cid:17218949f605b16b22" class=""
                        width="686" height="259" border="0"><o:p></o:p></span></p>
                  <p class="MsoNormal"
                    style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EL"> </span><span lang="EL"><o:p></o:p></span></p>
                  <p class="MsoNormal"
                    style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EL">Γνωρίζει κανείς κάτι;</span><span
                      lang="EL"><o:p></o:p></span></p>
                  <p class="MsoNormal"
                    style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EL"> </span><span lang="EL"><o:p></o:p></span></p>
                  <p class="MsoNormal"
                    style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EL">Με εκτίμηση,<br>
                      Γιώργος Βαρδίκος<br>
                      <br>
                    </span><span lang="EL"><a
                        href="http://www.hyperhosting.gr/"
                        target="_blank"
                        title="blocked::http://www.hyperhosting.gr/"
                        moz-do-not-send="true"><span
                          style="color:windowtext;text-decoration:none"><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif"><img
                              style="width:2.6041in;height:.4583in"
                              id="gmail-m_6290085922238440830Picture_x0020_1"
src="cid:part15.4D3795F8.242E0003@koutroumpas.gr"
                              alt="cid:565272513@21112014-0F25" class=""
                              width="250" height="44" border="0"></span></span></a></span><span
style="font-size:10.0pt;font-family:"Verdana",sans-serif"
                      lang="EL"><br>
                    </span><span
                      style="font-size:7.5pt;font-family:"Verdana",sans-serif"
                      lang="EL">HyperHosting Web Hosting Services<br>
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                      (09:00-17:00)</span><span lang="EL"><o:p></o:p></span></p>
                  <p class="MsoNormal"
                    style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
                      lang="EL"> <o:p></o:p></span></p>
                  <p class="MsoNormal"
                    style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
                      lang="EL"> <o:p></o:p></span></p>
                </div>
              </div>
            </blockquote>
          </div>
        </div>
      </blockquote>
    </blockquote>
    <br>
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