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<p>Hi,<br>
</p>
<p>I have a multinode openstack juno setup. Iperf does not work
between VMs( on the same compute node asw ell as different compute
nodes) <br>
</p>
<p>
On iperf server VM</p>
<pre class="prettyprint"><code><span class="pln"> iperf </span><span class="pun">-</span><span class="pln">s
</span><span class="pun">------------------------------------------------------------</span><span class="pln">
</span><span class="typ">Server</span><span class="pln"> listening on TCP port </span><span class="lit">5001</span><span class="pln">
TCP window size</span><span class="pun">:</span><span class="pln"> </span><span class="lit">85.3</span><span class="pln"> </span><span class="typ">KByte</span><span class="pln"> </span><span class="pun">(</span><span class="kwd">default</span><span class="pun">)</span><span class="pln">
</span><span class="pun">------------------------------------------------------------</span></code></pre>
<p>On iperf client VM</p>
<pre class="prettyprint"><code><span class="pln"> iperf </span><span class="pun">-</span><span class="pln">c </span><span class="lit">192.168</span><span class="pun">.</span><span class="lit">1.42</span><span class="pln"> </span><span class="pun">-</span><span class="pln">p </span><span class="lit">8042</span><span class="pln"> </span><span class="pun">-</span><span class="pln">i </span><span class="lit">1</span><span class="pln"> </span><span class="pun">-</span><span class="pln">t </span><span class="lit">10</span></code></pre>
<p>The mtu of the VM interface is 1400. It does not work even after
increasing or decreasing this value.</p>
<pre class="prettyprint"><code><span class="pln">ifconfig
eth0 </span><span class="typ">Link</span><span class="pln"> encap</span><span class="pun">:</span><span class="typ">Ethernet</span><span class="pln"> </span><span class="typ">HWaddr</span><span class="pln"> fa</span><span class="pun">:</span><span class="lit">16</span><span class="pun">:</span><span class="lit">3e</span><span class="pun">:</span><span class="pln">ac</span><span class="pun">:</span><span class="lit">70</span><span class="pun">:</span><span class="lit">99</span><span class="pln">
inet addr</span><span class="pun">:</span><span class="lit">192.168</span><span class="pun">.</span><span class="lit">1.41</span><span class="pln"> </span><span class="typ">Bcast</span><span class="pun">:</span><span class="lit">192.168</span><span class="pun">.</span><span class="lit">1.255</span><span class="pln"> </span><span class="typ">Mask</span><span class="pun">:</span><span class="lit">255.255</span><span class="pun">.</span><span class="lit">255.0</span><span class="pln">
inet6 addr</span><span class="pun">:</span><span class="pln"> fe80</span><span class="pun">::</span><span class="pln">f816</span><span class="pun">:</span><span class="lit">3eff</span><span class="pun">:</span><span class="pln">feac</span><span class="pun">:</span><span class="lit">7099</span><span class="pun">/</span><span class="lit">64</span><span class="pln"> </span><span class="typ">Scope</span><span class="pun">:</span><span class="typ">Link</span><span class="pln">
UP BROADCAST RUNNING MULTICAST MTU</span><span class="pun">:</span><span class="lit">1400</span><span class="pln"> </span><span class="typ">Metric</span><span class="pun">:</span><span class="lit">1</span><span class="pln">
RX packets</span><span class="pun">:</span><span class="lit">5781941</span><span class="pln"> errors</span><span class="pun">:</span><span class="lit">0</span><span class="pln"> dropped</span><span class="pun">:</span><span class="lit">0</span><span class="pln"> overruns</span><span class="pun">:</span><span class="lit">0</span><span class="pln"> frame</span><span class="pun">:</span><span class="lit">0</span><span class="pln">
TX packets</span><span class="pun">:</span><span class="lit">7096888</span><span class="pln"> errors</span><span class="pun">:</span><span class="lit">0</span><span class="pln"> dropped</span><span class="pun">:</span><span class="lit">0</span><span class="pln"> overruns</span><span class="pun">:</span><span class="lit">0</span><span class="pln"> carrier</span><span class="pun">:</span><span class="lit">0</span><span class="pln">
collisions</span><span class="pun">:</span><span class="lit">0</span><span class="pln"> txqueuelen</span><span class="pun">:</span><span class="lit">1000</span><span class="pln">
RX bytes</span><span class="pun">:</span><span class="lit">3028179379</span><span class="pln"> </span><span class="pun">(</span><span class="lit">3.0</span><span class="pln"> GB</span><span class="pun">)</span><span class="pln"> TX bytes</span><span class="pun">:</span><span class="lit">3594331790</span><span class="pln"> </span><span class="pun">(</span><span class="lit">3.5</span><span class="pln"> GB</span><span class="pun">)</span></code></pre>
<p>Please help me solve this issue.<br>
</p>
<p>Thanks,<br>
</p>
<p>Priyanka<br>
</p>
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