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<p class="MsoNormal">The original issue began 2-3 months ago at one client office. This past week it has spread to two clients over at least 6 different offices. Any other thoughts?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>From:</b> Stephen Wilcox <steve.wilcox@ixreach.com> <br>
<b>Sent:</b> Tuesday, October 15, 2019 4:38 PM<br>
<b>To:</b> Biddle, Josh <JBiddle@ntst.com><br>
<b>Cc:</b> Justin Oeder <justin.oeder@beyondhosting.net>; outages@outages.org<br>
<b>Subject:</b> Re: [outages] VPN issues over Spectrum L3 boundaries<o:p></o:p></p>
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<p class="MsoNormal">Sounds more like a technical issue such as a tunnel with lower MTU. So your signalling works but the tunnel and data doest get established. I would very much doubt a commercial problem caused someone to randomly implement filters. You ought
to be able to test it tho by seeing if the relevant ports are open in either direction and if ping/no fragment works at the maximum tunnel MTU.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hth<o:p></o:p></p>
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<p class="MsoNormal">On Wed, 16 Oct 2019, 00:33 Biddle, Josh via Outages, <<a href="mailto:outages@outages.org">outages@outages.org</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">See if you can get proof with traceroutes and post on the thread that I made to see if we can get some type of answer out of someone. My best guess at this time is that it is some
business squabble at the transit provider where these two Internet providers interconnect.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b>From:</b> Justin Oeder <<a href="mailto:justin.oeder@beyondhosting.net" target="_blank">justin.oeder@beyondhosting.net</a>>
<br>
<b>Sent:</b> Tuesday, October 15, 2019 8:51 AM<br>
<b>To:</b> Biddle, Josh <<a href="mailto:JBiddle@ntst.com" target="_blank">JBiddle@ntst.com</a>><br>
<b>Cc:</b> <a href="mailto:outages@outages.org" target="_blank">outages@outages.org</a><br>
<b>Subject:</b> Re: [outages] VPN issues over Spectrum L3 boundaries<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">We had a similar issue last week that we chalked up to a Spectrum outage. <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Because this was all new install we have not gone back and tested again yet but very similar to you - Multiple sites over Ohio. VPN would establish and one side would send traffic
and it would be received on the other end. The other side would send traffic and it would not be received.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Justin<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On Oct 15, 2019, at 8:04 AM, Biddle, Josh via Outages <<a href="mailto:outages@outages.org" target="_blank">outages@outages.org</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Found a thread in the Spectrum forums talking about the issue finally – it was marked as resolved so I started a new one.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__forums.timewarnercable.com_t5_Connectivity_Traffic-2Dissues-2Dat-2D66-2D109-2D7-2D162_m-2Dp_164091-23M53497&d=DwMFaQ&c=-7HNwxqfpkdcRXCW8HB54Q&r=svX1Si7sopSBMitBL3bFwQ&m=iQLepJM5vHmCTqpsc5_QOKPNiy5wXujKdcHvm7JWg0k&s=RUIXDoc0T_bmNFkrtsGtYl5C5cVvjOWGsqTFkuO39dE&e=" target="_blank"><span style="color:#954F72">https://forums.timewarnercable.com/t5/Connectivity/Traffic-issues-at-66-109-7-162/m-p/164091#M53497</span></a><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b>From:</b><span class="m1856832255868141672apple-converted-space"> </span>Outages <<a href="mailto:outages-bounces@outages.org" target="_blank"><span style="color:#954F72">outages-bounces@outages.org</span></a>><span class="m1856832255868141672apple-converted-space"> </span><b>On
Behalf Of<span class="m1856832255868141672apple-converted-space"> </span></b>Biddle, Josh via Outages<br>
<b>Sent:</b><span class="m1856832255868141672apple-converted-space"> </span>Sunday, October 13, 2019 12:00 PM<br>
<b>To:</b><span class="m1856832255868141672apple-converted-space"> </span><a href="mailto:outages@outages.org" target="_blank"><span style="color:#954F72">outages@outages.org</span></a><br>
<b>Subject:</b><span class="m1856832255868141672apple-converted-space"> </span>[outages] VPN issues over Spectrum L3 boundaries<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">We have several offices over the Ohio and Pennsylvania area that are experiencing issues passing traffic over VPN tunnels (specifically, there is always a Spectrum >< Level 3 interconnect).
It is a very strange issue. The VPN tunnel will actually establish, and if you source your ping from inside the internal network across the VPN tunnel to the destination, the traffic gets there and replies, but the replies never make it back to the original
sending point.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Anyone else experiencing any similar issues like this?<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Best Regards,<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#005480">Josh</span></b><o:p></o:p></p>
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