<div style="FONT-FAMILY: Arial; COLOR: rgb(0, 0, 0); FONT-SIZE: 12px"><div>Thanks all for the suggested tips. I confess I tried VMWare hypervisor esxi and found it less complicated to get set up and functioning correctly. <br /><br />I'll have to take up KVM another day, when I'm in less of a hurry to get something up and running right away. <br /></div><div>&nbsp;</div><div>&nbsp;</div><div style="border-top:1px solid #bcbcbc;margin:5px 0px;"></div><span style="font-size:12;font-family:arial;color:#000000;">On 03/18/16, <span>Mike - st257&lt;silvertip257@gmail.com&gt;</span> wrote:</span><div>&nbsp;</div><div style="font-size:12;font-family:arial;color:#000000;"><div dir="ltr">Paul,<div><br /><div class="gmail_extra"><br /><div class="gmail_quote">On Thu, Mar 17, 2016 at 5:47 PM, Digimer <span dir="ltr">&lt;<a class="parsedEmail" href="mailto:lists@alteeve.ca" target="_blank">lists@alteeve.ca</a>&gt;</span> wrote:<br /><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><span class="">On 17/03/16 04:47 PM, <a class="parsedEmail" href="mailto:paul.greene.va@verizon.net" target="_blank">paul.greene.va@verizon.net</a> wrote:<br />&gt; Thanks, I followed the 2nd article, and it got the existing virtual<br />&gt; machines communicating with each other.<br /></span></blockquote><div><br /></div><div style="">Right, so your VMs are on the same bridge group now (at Layer2 of OSI).</div><div>&nbsp;</div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><span class="">&gt;<br />&gt; However, any new virtual machines I created after making the changes<br />&gt; can't communicate with anything, they can't even get out to the<br />&gt; internet, even if I manually set the IP address info. Any suggestions on<br />&gt; that?<br />&gt;<br />&gt; Paul<br /></span></blockquote><div><br /></div><div style="">Have you verified connectivity to the VMs' default gateway?</div><div style="">Does the ARP (address resolution protocol) process succeed?</div><div style="">arp -a | grep &lt;Default_Gateway_IP_here&gt;</div><div style=""><a href="http://linux-ip.net/html/ether-arp.html" target="_blank">http://linux-ip.net/html/ether-arp.html</a><br /></div><div style=""><br /></div><div style="">You may not have a NIC connected to your physical network in that bridge group.</div><div style="">If so you need to modify your network-scripts to make that happen automatically on boot.</div><div style="">You do not necessarily need an IP address on your bridge interface unless the VM host is acting as a router (default gateway).</div><div style=""><a href="https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Deployment_Guide/s2-networkscripts-interfaces_network-bridge.html" target="_blank">https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Deployment_Guide/s2-networkscripts-interfaces_network-bridge.html</a><br /></div><div style=""><br /></div><div style="">Here's an example:</div><div style=""><div>~]# cat /etc/sysconfig/network-scripts/ifcfg-XX_br0&nbsp;</div><div>DEVICE=XX_br0</div><div>TYPE=Bridge</div><div>BOOTPROTO=static</div><div>ONBOOT=yes</div><div>DELAY=0</div><div>NM_CONTROLLED=no</div></div><div style=""><br /></div><div style="">You can temporarily add an interface to the bridge group for testing purposes though.</div><div style="">brctl addif &lt;bridge&gt; &lt;interface&gt;</div><div style=""><a href="http://www.tldp.org/HOWTO/BRIDGE-STP-HOWTO/set-up-the-bridge.html" target="_blank">http://www.tldp.org/HOWTO/BRIDGE-STP-HOWTO/set-up-the-bridge.html</a><br /></div><div>&nbsp;</div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><span class=""><br /></span>Check that they're using your static bridge. 'virsh dumpxml &lt;vm&gt;' will<br />have a section like:<br /><br />====<br />&nbsp; &nbsp; &lt;interface type='network'&gt;<br />&nbsp; &nbsp; &nbsp; &lt;mac address='52:54:00:71:20:fa'/&gt;<br />&nbsp; &nbsp; &nbsp; &lt;source network='bcn_bridge1' bridge='bcn_bridge1'/&gt;<br />&nbsp; &nbsp; &nbsp; &lt;target dev='vnet2'/&gt;<br />&nbsp; &nbsp; &nbsp; &lt;model type='e1000'/&gt;<br />&nbsp; &nbsp; &nbsp; &lt;alias name='net2'/&gt;<br />&nbsp; &nbsp; &nbsp; &lt;address type='pci' domain='0x0000' bus='0x00' slot='0x05'<br />function='0x0'/&gt;<br />&nbsp; &nbsp; &lt;/interface&gt;<br />====<br /><br />That tells you that the interface is MAC '52:54:00:71:20:fa' is &quot;plugged<br />in&quot; to the bridge 'bcn_bridge1'. If that doesn't connect to the right<br />bridge, then you need to change it (virt-manager has a simple to use GUI<br />for this, or you can use 'virsh edit &lt;vm&gt;' if you're comfortable editing<br />XML).</blockquote></div><div class="gmail_extra"><br /></div><div class="gmail_extra" style="">An additional command to run to verify your Ethernet bridge(s) operation is:</div><div class="gmail_extra" style="">brctl show</div><div class="gmail_extra" style="">brctl show &lt;bridge&gt;</div><div class="gmail_extra" style=""><br /></div><div class="gmail_extra" style=""><div class="gmail_extra">~]# brctl show XX_br0</div><div class="gmail_extra">bridge name<span class="" style="white-space:pre"> </span>bridge id<span class="" style="white-space:pre">  </span>STP enabled<span class="" style="white-space:pre"> </span>interfaces</div><div class="gmail_extra">XX_br0<span class="" style="white-space:pre">  </span>8000.00151713fdbc<span class="" style="white-space:pre"> </span>no<span class="" style="white-space:pre">  </span>p1p1</div><div class="gmail_extra"><span class="" style="white-space:pre">       </span>vnet0</div><div class="gmail_extra"><span class="" style="white-space:pre">       </span>vnet1</div><div class="gmail_extra"><span class="" style="white-space:pre">       </span>vnet11</div><div class="gmail_extra"><span class="" style="white-space:pre">       </span>vnet12</div><div class="gmail_extra"><span class="" style="white-space:pre">       </span>vnet13</div><div class="gmail_extra"><span class="" style="white-space:pre">       </span>vnet19</div><div class="gmail_extra"><span class="" style="white-space:pre">       </span>vnet2</div><div class="gmail_extra"><span class="" style="white-space:pre">       </span>vnet4</div><div class="gmail_extra"><span class="" style="white-space:pre">       </span>vnet6</div><div class="gmail_extra"><span class="" style="white-space:pre">       </span>vnet7</div><div><br /></div></div><div class="gmail_extra"><br /></div>-- <br /><div class="gmail_signature">---~~.~~---<br />Mike<br />//&nbsp; SilverTip257&nbsp; //</div></div></div></div><br /><hr size="1" /><br />_______________________________________________<br />CentOS-virt mailing list<br /><a class="parsedEmail" href="mailto:CentOS-virt@centos.org" target="_blank">CentOS-virt@centos.org</a><br /><a class="parsedLink" href="https://lists.centos.org/mailman/listinfo/centos-virt" target="_blank">https://lists.centos.org/mailman/listinfo/centos-virt</a><br /></div></div>