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<p class="MsoNormal"><span style="font-size:11.0pt">Hi All,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">We have a customer that is experiencing packet loss on a VPN connection.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">The connection is between their on-prem (colo datacentre) and Azure.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Their firewall is managed by Vendor A (customer owned device).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">The ISP is Vendor B.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">We have been getting bounced around between Microsoft support, Vendor A (FW Support), Fortinet (FW Vendor support) and Vendor B (ISP) – all claiming no fault.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Our monitoring (from on-prem servers to Azure servers) shows consistent packet loss of 2-3% - peaking at 8-9% between Azure and on-prem.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Packet captures run end-to-end show the loss to be occurring between the on-prem FW and the Azure VPN GW.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">We are having a hard time convincing the ISP of the issue – they have been unable to find any fault in their network.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">The ISP support is finding it hard to troubleshoot being that the Azure VPN GW does not respond to ping (by design – and we cannot change this).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Monitoring in place on the same link to internet site (google.com) shows 0% packet loss. We are only loosing packets on the VPN.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Just putting this out there for any suggestions on how we can assist the ISP to determine the root cause? Or for any other suggestions?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Thanks<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Dan<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<P style="FONT-SIZE: 10pt; FONT-FAMILY: Calibri" align=left><STRONG>Daniel Bartlett</STRONG> / Technology Architect<BR>dan@thecloudmode.com /
0407 176 755<BR><BR>Lvl 17 / 31 Queen St<BR>Melbourne Victoria Australia 3000 <BR><A
title=web
href="http://www.thecloudmode.com/">www.thecloudmode.com</A></P></TD></TR></TBODY></TABLE></STRONG></FONT></P>
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