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<div class="moz-cite-prefix">Hi Joerg,<br>
<br>
On 19/03/15 19:01, Joerg Hanebuth wrote:<br>
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<p class="MsoNormal"><span style="color:#1F497D">Hi Hector,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">thnx for reply.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">I
know that managed layer 2 switches have a lot of abilities
;)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">And
that’s my apprehension – that he figured out something<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">that
is blocking clean drbd-sync.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">Switching
this drbd over an unmanaged,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">stupid
gigabit-switch works well.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">But
at the moment we plug it in his 100mbit managed switch<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">drbd
get out of sync and fails.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">I
have the suspicion he will parade me and block something
needed for drbd.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">Layer
2 Switches can't block ports,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">but
have the abilities to block broad-, uni- or multicast.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">So
anyone out there who can answer my question?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">Needs
drbd any form of casting like<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">broad-,
uni- or multicast to stay in sync?</span></p>
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I don't think DRBD uses any of that. It just needs to talk to the
one IP on the other node, that's it.<br>
<br>
Have you checked VLAN config, Jumbo packet settings on switches and
servers?<br>
<pre class="moz-signature" cols="72">--
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