<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-family: Calibri, sans-serif; "><div>Hi</div><div><br></div><div>We have deployed into production a cluster using OVS.</div><div><br></div><div>We are using "tenant_network_type = gre"</div><div><br></div><div>We have two controller nodes (these also run ceph for storage) each have 2 nic's bonded using VLAN's for the different traffic (Storage on one VLAN, VM Mgmt on another etc)</div><div>We have a single network node (this is an oldish box with a quad core X3220) this has two nic's one is a public facing nic, the other has two VLANs on it (VM Mgmt and VM Floating)</div><div>We have eight compute nodes these are dual nic's bonded with the same VLANs as the controller and network nodes.</div><div><br></div><div>We are facing a few issues. </div><div><br></div><div>1.) The network node has nic's that cannot exceed 1500 byte MTU – so all vms need to have a small MTU to avoid fragmentation – this is a pain in the ass.</div><div>2.) The network node load is never under 3.5 – 4. This seems to be the case if we are doing 10mbit or 800mbit.</div><div>3.) Network performance is unpredictable at best.</div><div><br></div><div>Are we doing something wrong ? Have I missed something here ?</div><div><br></div><div>Would moving to "tenant_network_type = vlan" make me happier and if so what do you think is the best way to do that ?</div><div><br></div><div>Any input is appreciated as this is getting to be a pretty major issue :) (happy to engage freelance consultants to help :))</div><div><br></div><div>Thanks, </div></body></html>