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<p class="MsoNormal">Calico does not use an overlay for communication between Pods. It leverages a direct layer3 routed network which will route the Pod payload protocol without encapsulation. The only exception is inter-host communication that uses an IPinIP
tunnel, so those will carry an extra outer IP header.<o:p></o:p></p>
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<p class="MsoNormal">-Matt<o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">"Jones, Bruce E" <bruce.e.jones@intel.com><br>
<b>Date: </b>Tuesday, December 17, 2019 at 1:31 PM<br>
<b>To: </b>"starlingx-discuss@lists.starlingx.io" <starlingx-discuss@lists.starlingx.io><br>
<b>Subject: </b>[Starlingx-discuss] Customer Question - TCP between pods?<o:p></o:p></span></p>
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<p class="MsoNormal">Forgive me for asking what may be an obvious question. I was meeting with a customer today and the question came up – does StarlingX use/enable TCP between pods? Their experience was with K3S/Flannel which uses UDP.
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<p class="MsoNormal">Thank you!<o:p></o:p></p>
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<p class="MsoNormal"> brucej<o:p></o:p></p>
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