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<p style="margin: 0 0 1em 0; color: black;">Are you using vxlan
segmentation? What is your MTU?</p>
<p style="margin: 0 0 1em 0; color: black;">R</p>
<p style="margin: 0 0 1em 0; color: black;">CA</p>
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<p
style="color: black; font-size: 10pt; font-family: Arial, sans-serif; margin: 10pt 0;">On
March 30, 2017 10:54:30 AM John Petrini <jpetrini@coredial.com>
wrote:</p>
<blockquote type="cite" class="gmail_quote"
style="margin: 0 0 0 0.75ex; border-left: 1px solid #808080; padding-left: 0.75ex;">
<div dir="ltr">Hi All,<div><br></div><div>We have a Mirantis Mitaka
deployment and are experiencing slow internet speed on instances that are
using floating IP's.</div><div><br></div><div>Let me start with
what's not impacted:</div><div><ul><li>Transfers between instances on
the same or different tenant networks</li><li>Transfers between instances
on separate OpenStack deployments</li><li>Transfers between instances and
servers outside of OpenStack</li><li>Instances that are on VLAN provider
networks</li></ul><div>So the situation is limited only to instances with
floating IP's going out to the
internet.</div><div><br></div><div>Here's an example of the slow
speed:</div><div><br></div><div>Selecting best server based on
latency...</div><div>Hosted by Quonix, Inc. (Philadelphia, PA) [24.88 km]:
11.956 ms</div><div>Testing download
speed........................................</div><div>Download: 11.84
Mbit/s</div><div>Testing upload
speed..................................................</div><div>Upload:
3.12 Mbit/s</div></div><div><br></div><div>Here's an example of the
same test from one of the controllers. The controllers are on the same
network and use the same gateway.</div><div><br></div><div><div><div>Hosted
by Quonix, Inc. (Philadelphia, PA) [24.88 km]: 3.933 ms</div><div>Testing
download
speed................................................................................</div><div>Download:
624.71 Mbit/s</div><div>Testing upload
speed....................................................................................................</div><div>Upload:
213.82 Mbit/s</div></div><div><br></div><div>Now for the more interesting
part...</div><div><br></div><div>Here's an example running a speedtest
within the namespace</div><div><br></div><div><div>ip netns e
qrouter-8fd1a0e9-b1cd-4ca9-89dd-e9e4fdc82778 ./speedtest-cli --server 7519
--source 192.168.77.1</div><div>Retrieving <a
href="http://speedtest.net">speedtest.net</a>
configuration...</div><div>Retrieving <a
href="http://speedtest.net">speedtest.net</a> server
list...</div><div>Selecting best server based on ping...</div><div>Hosted
by Quonix, Inc. (Philadelphia, PA) [24.88 km]: 4006.975
ms</div><div>Testing download
speed................................................................................</div><div>Download:
2.60 Mbit/s</div><div>Testing upload
speed....................................................................................................</div><div>Upload:
2.46 Mbit/s</div></div><div><br></div><div>Here's the same example
except in this case I've changed resolv.conf to only use our primary
DNS servers instead of the resolvers that are local to OpenStack. One of
these resolvers is the fuel node and the other is dnsmasq which is also
using pointed to the fuel node in its
config.</div><div><br></div><div><div>ip netns e
qrouter-8fd1a0e9-b1cd-4ca9-89dd-e9e4fdc82778 ./speedtest-cli --server 7519
--source 192.168.77.1</div><div>Retrieving <a
href="http://speedtest.net">speedtest.net</a>
configuration...</div><div>Retrieving <a
href="http://speedtest.net">speedtest.net</a> server
list...<br></div><div>Selecting best server based on
ping...</div><div>Hosted by Quonix, Inc. (Philadelphia, PA) [24.88 km]:
3.905 ms</div><div>Testing download
speed................................................................................</div><div>Download:
547.38 Mbit/s</div><div>Testing upload
speed....................................................................................................</div><div>Upload:
283.14 Mbit/s</div></div><div><br></div><div>Running a dig against these
server within the namespace fails:</div><div><br></div><div><div>ip netns e
qrouter-8fd1a0e9-b1cd-4ca9-89dd-e9e4fdc82778 /usr/bin/dig @<a
href="http://172.17.1.6">172.17.1.6</a> <a
href="http://google.com">google.com</a></div><div><br></div><div>;
<<>> DiG 9.9.5-3ubuntu0.8-Ubuntu <<>> @<a
href="http://172.17.1.6">172.17.1.6</a> <a
href="http://google.com">google.com</a></div><div>; (1 server
found)</div><div>;; global options: +cmd</div><div>;; cRunning a dig
against these server within the namespace
fails:</div><div><br></div><div>ip netns e
qrouter-8fd1a0e9-b1cd-4ca9-89dd-e9e4fdc82778 /usr/bin/dig @<a
href="http://172.17.1.6">172.17.1.6</a> <a
href="http://google.com">google.com</a></div><div><br></div><div>;
<<>> DiG 9.9.5-3ubuntu0.8-Ubuntu <<>> @<a
href="http://172.17.1.6">172.17.1.6</a> <a
href="http://google.com">google.com</a></div><div>; (1 server
found)</div><div>;; global options: +cmd</div><div>;; connection timed out;
no servers could be reached</div><div><br></div><div>ip netns e
qrouter-8fd1a0e9-b1cd-4ca9-89dd-e9e4fdc82778 /usr/bin/dig @<a
href="http://172.16.1.13">172.16.1.13</a> <a
href="http://google.com">google.com</a></div><div><br></div><div>;
<<>> DiG 9.9.5-3ubuntu0.8-Ubuntu <<>> @<a
href="http://172.16.1.13">172.16.1.13</a> <a
href="http://google.com">google.com</a></div><div>; (1 server
found)</div><div>;; global options: +cmd</div><div>;; connection timed out;
no servers could be reachedonnection timed out; no servers could be
reached</div></div><div><br></div><div><div>ip netns e
qrouter-8fd1a0e9-b1cd-4ca9-89dd-e9e4fdc82778 /usr/bin/dig @<a
href="http://172.16.1.13">172.16.1.13</a> <a
href="http://google.com">google.com</a></div><div><br></div><div>;
<<>> DiG 9.9.5-3ubuntu0.8-Ubuntu <<>> @<a
href="http://172.16.1.13">172.16.1.13</a> <a
href="http://google.com">google.com</a></div><div>; (1 server
found)</div><div>;; global options: +cmd</div><div>;; connection timed out;
no servers could be reached</div></div><div><br></div><div>The instance
itself is using our primary DNS servers so I'm starting to think the
speed issue within the namespace may be merely a coincidence since name
resolution within the instance appears to work fine but I'm not sure
how to troubleshoot this further. I'm considering modifying the dnsmasq
config to use our primary DNS servers but I'm doubting that would help
anything.</div><div><br></div><div>Any help tracking this down would be
greatly appreciated!</div><div><br></div><div>Thank You,</div><div><div
class="gmail_signature"><div dir="ltr"><div dir="ltr"><div
dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><p
style="margin-top:8px;margin-bottom:8px;font-family:helvetica,verdana,arial,sans-serif;font-size:0.85em;color:rgb(51,51,51);line-height:1.4"><span
style="font-size:0.85em;line-height:1.4">___</span><br></p><p
style="margin-top:8px;margin-bottom:8px;font-family:helvetica,verdana,arial,sans-serif;font-size:1.1em;color:rgb(51,51,51);line-height:1.4">John
Petrini</p></div></div></div></div><a href="http:///"
target="_blank"></a></div></div></div></div></div>
</div></div>
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