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<p class="MsoNormal"><span style="color:#1F497D">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I think there is no much consideration of L3 forwarding capacity, of the order of 100G in Network-Node(NN).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Not sure current software queues in NN are capable of handling 100G times of packet rate.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">(Of course for compute node there will SRIOV to speedup these)<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">Instead you can consider of having multiple Network Nodes deployed, so that L3 forwarding will be distributed across multiple NN.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Make sure you will have separate public IP for each of these NNs, so that any session related issue will not have issues in NN.<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"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Keshava.A.K.<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"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b>From:</b> CARVER, PAUL [mailto:pc2929@att.com] <br>
<b>Sent:</b> Monday, June 23, 2014 6:51 PM<br>
<b>To:</b> OpenStack-dev@lists.openstack.org<br>
<b>Subject:</b> [openstack-dev] [Neutron] High bandwidth routers<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Is anyone using Neutron for high bandwidth workloads? (for sake of discussion let’s “high” = “50Gbps or greater”)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">With routers being implemented as network namespaces within x86 servers it seems like Neutron networks would be pretty bandwidth constrained relative to “real” routers.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">As we start migrating the physical connections on our physical routers from multiple of 10G to multiples of 100G, I’m wondering if Neutron has a clear roadmap towards networks where the bandwidth requirements exceed what an x86 box can
do.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Is the thinking that x86 boxes will soon be capable of 100G and multi-100G throughput? Or does DVR take care of this by spreading the routing function over a large number of compute nodes so that we don’t need to channel multi-100G flows
through single network nodes?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m mostly thinking about WAN connectivity here, video and big data applications moving huge amounts of traffic into and out of OpenStack based datacenters.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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