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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D">Hi, Swami,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks for your reply.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D">Maybe I did not explain clearly, my suggestion is:
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D">Add one more configuration, enable_distributed_FIP to configure the FIP will be run as distributed mode or centralized mode.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D">If enable_distributed_FIP = True, then FIP can be both in centralized node (dvr_snat) and distributed “dvr” compute nodes.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D">If enable_distributed_FIP = False, then FIP can be only in centralized node (dvr_snat).
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-align:justify;text-justify:inter-ideograph"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D">Best Regards<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify;text-justify:inter-ideograph"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D">Chaoyi Huang ( Joe Huang )<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Vasudevan, Swaminathan (PNB Roseville) [mailto:swaminathan.vasudevan@hp.com]
<br>
<b>Sent:</b> Wednesday, January 14, 2015 1:41 PM<br>
<b>To:</b> joehuang; OpenStack Development Mailing List (not for usage questions);
</span><span style="font-size:10.0pt">龚永生</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""><br>
<b>Subject:</b> RE: [openstack-dev] About DVR limit<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hi Joehuang,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">FIP today as of Juno can be both in centralized node (dvr_snat) and distributed “dvr” compute nodes.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Swami<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> joehuang [<a href="mailto:joehuang@huawei.com">mailto:joehuang@huawei.com</a>]
<br>
<b>Sent:</b> Tuesday, January 13, 2015 7:49 PM<br>
<b>To:</b> OpenStack Development Mailing List (not for usage questions); </span><span style="font-size:10.0pt;font-family:"PMingLiU","serif"">龚永生</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""><br>
<b>Cc:</b> Vasudevan, Swaminathan (PNB Roseville)<br>
<b>Subject:</b> RE: [openstack-dev] About DVR limit<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D">Hi, Swami,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D">I would like to know whether the FIP under DVR could be configured to distributed mode or central mode in Kilo, not find relevant information from
<a href="http://specs.openstack.org/openstack/neutron-specs/">http://specs.openstack.org/openstack/neutron-specs/</a>.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D">For example, it will be helpful for following FIP use cases: 1) FIP will be addressed centrally by dedicated hardware 2) not all compute nodes
have public address.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-align:justify;text-justify:inter-ideograph"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D">Best Regards<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify;text-justify:inter-ideograph"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D">Chaoyi Huang ( Joe Huang )<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Stamina than Valued an [<a href="mailto:souminathan@yahoo.com">mailto:souminathan@yahoo.com</a>]
<br>
<b>Sent:</b> Wednesday, January 14, 2015 11:05 AM<br>
<b>To:</b> </span><span style="font-size:10.0pt">龚永生</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""><br>
<b>Cc:</b> <a href="mailto:swaminathan.vasudevan@hp.com">swaminathan.vasudevan@hp.com</a>;
<a href="mailto:openstack-dev@lists.openstack.org">openstack-dev@lists.openstack.org</a><br>
<b>Subject:</b> Re: [openstack-dev] About DVR limit<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">Hi yong Zheng,<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">Yes your understanding is right.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">We only support ovs driver.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">Regarding HA and multi network support, it will be available in kilo.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">Public address consumption for north south traffic for compute node is also true. But to address this issue we do have a proposal that is worked out by the l3 sub team.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">I hope this clarifies your doubts.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">Please let me know if I can help you with anything else.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">Thanks<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">Swami<br>
<br>
Sent from my iPad<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span lang="EN-US"><br>
On Jan 13, 2015, at 6:01 PM, </span>龚永生<span lang="EN-US"> <<a href="mailto:gong.yongsheng@99cloud.net">gong.yongsheng@99cloud.net</a>> wrote:<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:8.5pt;font-family:"Arial","sans-serif";color:black">Hi,<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:8.5pt;font-family:"Arial","sans-serif";color:black"> I am yong sheng gong, I want to know if the DVR has these limits besides the documented at <a href="http://docs.openstack.org/networking-guide/content/ha-dvr.html:">http://docs.openstack.org/networking-guide/content/ha-dvr.html:</a>
<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:8.5pt;font-family:"Arial","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:8.5pt;font-family:"Arial","sans-serif";color:black">1. one subnet can be connected to DVR router only once, which is confirmed by BP <a href="https://blueprints.launchpad.net/neutron/+spec/neutron-ovs-dvr-multigateway">https://blueprints.launchpad.net/neutron/+spec/neutron-ovs-dvr-multigateway</a>
<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:8.5pt;font-family:"Arial","sans-serif";color:black">2. one network cannot have more than one subnet connecting to DVR routers<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:8.5pt;font-family:"Arial","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:8.5pt;font-family:"Arial","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:8.5pt;font-family:"Arial","sans-serif";color:black">So the DVR limits the neutron model to:<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:8.5pt;font-family:"Arial","sans-serif";color:black">one network has just one subnet, and one subnet cannot connect to more than one DVR routers.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:8.5pt;font-family:"Arial","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:8.5pt;font-family:"Arial","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:8.5pt;font-family:"Arial","sans-serif";color:black">ps.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:8.5pt;font-family:"Arial","sans-serif";color:black">req and limits documented at <a href="http://docs.openstack.org/networking-guide/content/ha-dvr.html:">http://docs.openstack.org/networking-guide/content/ha-dvr.html:</a>:<o:p></o:p></span></p>
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<h3 style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span lang="EN-US" style="font-size:13.5pt;font-family:"Verdana","sans-serif";color:black"> DVR requirements<o:p></o:p></span></b></h3>
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</span></span></span><![endif]><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:black">You must use the ML2 plug-in for Open VSwitch (OVS) to enable DVR.<o:p></o:p></span></p>
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</span></span></span><![endif]><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:black">Be sure that your firewall or security groups allows UDP traffic over the VLAN, GRE, or VXLAN port to pass between the compute hosts.<o:p></o:p></span></p>
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<h3 style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span lang="EN-US" style="font-size:13.5pt;font-family:"Verdana","sans-serif";color:black"> DVR limitations<o:p></o:p></span></b></h3>
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</span></span></span><![endif]><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:black">Distributed virtual router configurations work with the Open vSwitch Modular Layer 2 driver only for Juno.<o:p></o:p></span></p>
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</span></span></span><![endif]><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:black">In order to enable true north-south bandwidth between hypervisors (compute nodes), you must use public IP addresses for every compute node
and enable floating IPs.<o:p></o:p></span></p>
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</span></span></span><![endif]><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:black">For now, based on the current neutron design and architecture, DHCP cannot become distributed across compute nodes.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:8.5pt;font-family:"Verdana","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:black">thanks,</span><span lang="EN-US" style="font-size:8.5pt;font-family:"Verdana","sans-serif";color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:black">Yong sheng gong</span><span lang="EN-US" style="font-size:8.5pt;font-family:"Verdana","sans-serif";color:black"><o:p></o:p></span></p>
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