<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><br></div><div><br></div><span id="OLK_SRC_BODY_SECTION"><div style="font-family:Calibri; font-size:11pt; 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> gong yong sheng <<a href="mailto:gongysh@linux.vnet.ibm.com">gongysh@linux.vnet.ibm.com</a>><br><span style="font-weight:bold">Date: </span> Wednesday, November 21, 2012 5:25 PM<br><span style="font-weight:bold">To: </span> Ahmed Al-Mehdi <<a href="mailto:ahmed@coraid.com">ahmed@coraid.com</a>><br><span style="font-weight:bold">Cc: </span> "<a href="mailto:openstack@lists.launchpad.net">openstack@lists.launchpad.net</a>" <<a href="mailto:openstack@lists.launchpad.net">openstack@lists.launchpad.net</a>><br><span style="font-weight:bold">Subject: </span> Re: [Openstack] Quantum networking question..<br></div><div><br></div><blockquote id="MAC_OUTLOOK_ATTRIBUTION_BLOCKQUOTE" style="BORDER-LEFT: #b5c4df 5 solid; PADDING:0 0 0 5; MARGIN:0 0 0 5;"><div><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><div text="#000000" bgcolor="#FFFFFF"><div class="moz-cite-prefix">On 11/22/2012 08:23 AM, Ahmed Al-Mehdi wrote:<br></div><blockquote cite="mid:CCD2B093.5053%25ahmed@coraid.com" type="cite"><div>Hello,</div><div><br></div><div><span class="Apple-style-span">I have a question about setting up Quantum, following the steps described by Bilel Msekni ( </span><a moz-do-not-send="true" href="https://github.com/mseknibilel/OpenStack-Folsom-Install-guide/blob/master/OpenStack_Folsom_Install_Guide_WebVersion.rst">https://github.com/mseknibilel/OpenStack-Folsom-Install-guide/blob/master/OpenStack_Folsom_Install_Guide_WebVersion.rst</a> <span class="Apple-style-span">),
which uses 3 NICs. </span></div><div><span class="Apple-style-span">(Similar document/setup is also described by OpenStack.org also - </span><span class="Apple-style-span" style="font-family: Consolas;
font-size: medium; "><a moz-do-not-send="true" href="https://review.openstack.org/#/c/16096/">https://review.openstack.org/#/c/16096/</a></span><span class="Apple-style-span"> )</span></div><div><br></div><div>Based on the node diagram in Bilel's document, I understand why eth0 needs an IP address that is accessible to internet. However,</div><div> - Why does eth1 need an IP address, since it will be used for VM network? </div><div> - Why does eth2 not need an IP address (set to 0.0.0.0) since it is connected to the internet.</div><div><span class="Apple-style-span"><div><br></div><div>In my setup, I set an IP address to eth0 through my corp. DHCP server. Can I similarly assign an IP address to the other eth port (be it 1 or 2) that needs connection to the internet?</div><div><br></div></span></div></blockquote>
eth1 should not have IP since it will be added into br-eth1. If you want eth1 have IP, you can move the ip to br-eth1:<br>
sudo ip addr <ip> dev br-eth1<br>
sudo ifconfig br-eth1 up<br>
eth2 is connected to br-ex bridge. If u don't need the host to access the internet via eth2, there is no need to assign an IP to eth2 or br-ex<br>
the VM's will be able to access the internet via br-ex, which is via eth2 in turn to access internet.<br><br>
You can assign an IP to br-ex so that your host can use it.<br><blockquote cite="mid:CCD2B093.5053%25ahmed@coraid.com" type="cite"><div><span class="Apple-style-span"><div>Thank you,</div><div>Ahmed.</div><div><br></div></span></div><br><fieldset class="mimeAttachmentHeader"></fieldset> <br><pre wrap="">_______________________________________________
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