<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>Vish - </div><div><br></div><div>Thank you for responding. So, when using multiple interfaces, will setting the PUBLIC_INTERFACE to the separate interface w/o VLANing work? Is that what you are saying below? Are any additional configuration parameters then required such as "flat_network _bridge"?</div><div><br></div><div>Something still puzzling me:</div><ol><li>From my routing table below, it appears both the public interface AND the flat interface are on br100 (which is bound to eth2). I didn't think a bridge could have more than one subnet attached to it at any one time. I was apparently wrong.</li><li>My br100 has an associated address of 11.0.4.12, but eth2 has the IP address of 192.168.12.105.</li></ol><div>br100 then, has the public_interface traffic (floating_range - 192.168.12.x) and the fixed_address traffic traversing eth2, correct? Is my understanding of what is going on correct?</div><div><br></div><div><div>convirt@convirt-r01:~/devstack$ netstat -rn</div><div>Kernel IP routing table</div><div>Destination Gateway Genmask Flags MSS Window irtt Iface</div><div>0.0.0.0 192.168.12.1 0.0.0.0 UG 0 0 0 br100</div><div>10.0.4.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0</div><div>10.0.5.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1</div><div>11.0.4.0 0.0.0.0 255.255.255.0 U 0 0 0 br100</div><div>192.168.12.0 0.0.0.0 255.255.255.0 U 0 0 0 br100</div><div>192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0</div></div><div><br></div><div><div>convirt@convirt-r01:~/devstack$ brctl show</div><div>bridge name<span class="Apple-tab-span" style="white-space: pre; "> </span>bridge id<span class="Apple-tab-span" style="white-space: pre; "> </span>STP enabled<span class="Apple-tab-span" style="white-space: pre; "> </span>interfaces</div><div>br100<span class="Apple-tab-span" style="white-space: pre; "> </span>8000.00163e098238<span class="Apple-tab-span" style="white-space: pre; "> </span>no<span class="Apple-tab-span" style="white-space: pre; "> </span>eth2</div><div><span class="Apple-tab-span" style="white-space: pre; "> </span>vnet0</div><div>virbr0<span class="Apple-tab-span" style="white-space: pre; "> </span>8000.000000000000<span class="Apple-tab-span" style="white-space: pre; "> </span>yes</div></div><div><br></div><div>Thanks for taking the time to explain things,</div><div>~kvs</div><div><br></div><span id="OLK_SRC_BODY_SECTION"><div style="font-family:Courier; font-size:14pt; text-align:left; color:black; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt"><span style="font-weight:bold">From: </span> Vishvananda Ishaya <<a href="mailto:vishvananda@gmail.com">vishvananda@gmail.com</a>><br><span style="font-weight:bold">Date: </span> Tuesday, August 14, 2012 8:01 PM<br><span style="font-weight:bold">To: </span> Kurt Scholtens <<a href="mailto:burnbrighter@hotmail.com">burnbrighter@hotmail.com</a>><br><span style="font-weight:bold">Cc: </span> <<a href="mailto:openstack@lists.launchpad.net">openstack@lists.launchpad.net</a>><br><span style="font-weight:bold">Subject: </span> Re: [Openstack] Devstack multinode Installation network configuration help and bridging explanation<br></div><div><br></div><div><meta http-equiv="Content-Type" content="text/html charset=us-ascii"><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On Aug 14, 2012, at 1:24 PM, Kurt Scholtens <<a href="mailto:burnbrighter@hotmail.com">burnbrighter@hotmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; font-size: 14px; font-family: Calibri, sans-serif; "><div>Any takers?</div><div><br></div><span id="OLK_SRC_BODY_SECTION"><div style="font-family: Courier; font-size: 14pt; text-align: left; border-width: 1pt medium medium; border-style: solid none none; padding: 3pt 0in 0in; border-top-color: rgb(181, 196, 223); position: static; z-index: auto; "><span class="Apple-style-span" style="font-size: 14px; font-family: Calibri, sans-serif; ">I am looking for guidance on my current deployment. Let me start by saying, it works. That being said, I want to ensure what I am doing makes sense because I'm slightly confused by the networking. Specifically, the bridging doesn't make sense at all. If you look at my bridging below, it appears both my public network (192.168.12.x) and my host to host management network (10.0.5.x) are getting bridged on br100. More precisely it appears my FIXED_NETWORK (11.0.4.x) as well as my public network aka FLOATING_RANGE are getting bridged to br100. I do access my openstack hosts on 192.168.12.x as well as my openstack instances on this network. I just am not understanding the networking for this set up, even though it works. </span></div></span></div></blockquote></div><br><div>If you want the floating ips on a different interface (say eth1) you can use:</div><div><br></div><div>PUBLIC_INTERFACE=eth1</div><div><br></div><div>devstack defaults PUBLIC_INTERFACE to br100 because that is the only way to make it work if you have a single interface and you don't set up vlans. with multiple interfaces and vlans, generally you put public_interface and flat_interface on different devices.</div><div><br></div><div>Vish</div></div></div></span></body></html>