<div dir="ltr">Hi JuanFra,<div><br></div><div><div style="font-family:arial,sans-serif;font-size:13px">I read this article. But It doesn't explain what I concern. </div><div style="font-family:arial,sans-serif;font-size:13px">
What I want to know is that what's the packet flow when ping the floating ip between the VMs which located in the same physical machine? </div><div class="" style="font-family:arial,sans-serif;font-size:13px"></div></div>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Apr 9, 2013 at 9:56 PM, JuanFra Rodriguez Cardoso <span dir="ltr"><<a href="mailto:juanfra.rodriguez.cardoso@gmail.com" target="_blank">juanfra.rodriguez.cardoso@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Could this Mirantis' post help you?<br><br><a href="http://www.mirantis.com/blog/vlanmanager-network-flow-analysis/" target="_blank">http://www.mirantis.com/blog/vlanmanager-network-flow-analysis/</a><br>
<div class="gmail_extra">
<br clear="all"><div><div>---</div>JuanFra</div>
<br><br><div class="gmail_quote">2013/4/9 Lei Zhang <span dir="ltr"><<a href="mailto:zhang.lei.fly@gmail.com" target="_blank">zhang.lei.fly@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><div class="h5">
<div dir="ltr"><div style="line-height:1.2;color:rgb(34,34,34);font-size:1em;font-family:Helvetica,arial,freesans,clean,sans-serif;border:none">
<p style="margin:1em 0px">I am using: Folsom, nova-network, vlanManage, multi_host=ture</p>
<p style="margin:1em 0px">I want to know what's the package flow between the vms which located in the same physical machine.</p>
<p style="margin:1em 0px">Here is the typology. I want to know want happen if I ping 192.168.3.47 in vm7.</p>
<p style="margin:1em 0px">When the NAT is applied?</p>
<pre style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;font-size:1em;line-height:1.2em;overflow:auto;margin:1em 0px"><code style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;margin:0px 0.15em;padding:0px 0.3em;white-space:nowrap;border:1px solid rgb(234,234,234);background-color:rgb(248,248,248);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;display:inline;white-space:pre-wrap;border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;border:1px solid rgb(204,204,204);padding:0.5em 0.7em;display:block;padding:0.5em;color:rgb(51,51,51);background-color:rgb(248,248,255);background-repeat:initial initial"> |vm: fixed: 10.0.104.5, floating: 192.168.3.56|-----|vnet15|----|br104|----|vnet14|----| vm7: fixed: 10.0.104.6, floating: 192.168.3.57|</code></pre>
<p style="margin:1em 0px">if the net.bridge.bridge-nf-call-iptables=0, I can not see the NAT properly. </p>
<pre style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;font-size:1em;line-height:1.2em;overflow:auto;margin:1em 0px"><code style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;margin:0px 0.15em;padding:0px 0.3em;white-space:nowrap;border:1px solid rgb(234,234,234);background-color:rgb(248,248,248);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;display:inline;white-space:pre-wrap;border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;border:1px solid rgb(204,204,204);padding:0.5em 0.7em;display:block;padding:0.5em;color:rgb(51,51,51);background-color:rgb(248,248,255);background-repeat:initial initial">[root@openstack-node1 ~]# tcpdump -i vnet14 -l -ne icmp -v
tcpdump: WARNING: vnet14: no IPv4 address assigned
tcpdump: listening on vnet14, link-type EN10MB (Ethernet), capture size 65535 bytes
17:11:10.275818 fa:16:3e:3e:ab:8f > fa:16:3e:72:8f:b4, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto ICMP (1), length 84)
10.0.104.6 > <a href="http://192.168.3.56" target="_blank">192.168.3.56</a>: ICMP echo request, id 31090, seq 1, length 64
17:11:10.277546 fa:16:3e:22:31:09 > fa:16:3e:3e:ab:8f, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 64703, offset 0, flags [none], proto ICMP (1), length 84)
10.0.104.5 > <a href="http://10.0.104.6" target="_blank">10.0.104.6</a>: ICMP echo reply, id 31090, seq 1, length 64</code></pre>
<p style="margin:1em 0px">When net.bridge.bridge-nf-call-iptables=1, I found the NAT properly. But I also found it is said the bridge filter should be disabled in <a href="http://docs.openstack.org/trunk/openstack-compute/admin/content/network-troubleshooting.html" style="color:rgb(51,51,238);text-decoration:none" target="_blank">http://docs.openstack.org/trunk/openstack-compute/admin/content/network-troubleshooting.html</a>. Is this true?</p>
<pre style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;font-size:1em;line-height:1.2em;overflow:auto;margin:1em 0px"><code style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;margin:0px 0.15em;padding:0px 0.3em;white-space:nowrap;border:1px solid rgb(234,234,234);background-color:rgb(248,248,248);border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;display:inline;white-space:pre-wrap;border-top-left-radius:3px;border-top-right-radius:3px;border-bottom-right-radius:3px;border-bottom-left-radius:3px;border:1px solid rgb(204,204,204);padding:0.5em 0.7em;display:block;padding:0.5em;color:rgb(51,51,51);background-color:rgb(248,248,255);background-repeat:initial initial">
[root@openstack-node1 ~]# tcpdump -i vnet14 -l -ne icmp -v
tcpdump: WARNING: vnet14: no IPv4 address assigned
tcpdump: listening on vnet14, link-type EN10MB (Ethernet), capture size 65535 bytes
17:13:40.507577 fa:16:3e:3e:ab:8f > fa:16:3e:72:8f:b4, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto ICMP (1), length 84)
10.0.104.6 > <a href="http://192.168.3.56" target="_blank">192.168.3.56</a>: ICMP echo request, id 42098, seq 1, length 64
17:13:40.508034 fa:16:3e:22:31:09 > fa:16:3e:3e:ab:8f, ethertype IPv4 (0x0800), length 98: (tos 0x0, ttl 64, id 64704, offset 0, flags [none], proto ICMP (1), length 84)
192.168.3.56 > <a href="http://10.0.104.6" target="_blank">10.0.104.6</a>: ICMP echo reply, id 42098, seq 1, length 64</code></pre><span><font color="#888888">
</font></span></div><span><font color="#888888"><div><div>-- </div><div><span style="font-family:arial,sans-serif;font-size:13px;border-collapse:collapse">Lei Zhang</span></div><div><span style="font-family:arial,sans-serif;font-size:13px;border-collapse:collapse"><br>
</span></div><div><font face="arial, sans-serif">Blog: <a href="http://jeffrey4l.github.com" target="_blank">http://jeffrey4l.github.com</a></font></div><div>twitter/weibo: @jeffrey4l</div>
</div></font></span></div>
<br></div></div><div class="im">_______________________________________________<br>
Mailing list: <a href="https://launchpad.net/~openstack" target="_blank">https://launchpad.net/~openstack</a><br>
Post to : <a href="mailto:openstack@lists.launchpad.net" target="_blank">openstack@lists.launchpad.net</a><br>
Unsubscribe : <a href="https://launchpad.net/~openstack" target="_blank">https://launchpad.net/~openstack</a><br>
More help : <a href="https://help.launchpad.net/ListHelp" target="_blank">https://help.launchpad.net/ListHelp</a><br>
<br></div></blockquote></div><br></div></div>
</blockquote></div><br><br clear="all"><div><br></div>-- <br><div><span style="font-family:arial,sans-serif;font-size:13px;border-collapse:collapse">Lei Zhang</span></div><div><span style="font-family:arial,sans-serif;font-size:13px;border-collapse:collapse"><br>
</span></div><div><font face="arial, sans-serif">Blog: <a href="http://jeffrey4l.github.com" target="_blank">http://jeffrey4l.github.com</a></font></div><div>twitter/weibo: @jeffrey4l</div>
</div>