<div dir="ltr"><div>Hi Byeong,<br><br></div>Surely you can use multiple network nodes, if you want make it HA, you can read these:<br><div><br><a href="http://docs.openstack.org/admin-guide-cloud/content/app_demo_multi_dhcp_agents.html">http://docs.openstack.org/admin-guide-cloud/content/app_demo_multi_dhcp_agents.html</a><br>
<a href="http://docs.openstack.org/admin-guide-cloud/content/ha_pacemaker.html">http://docs.openstack.org/admin-guide-cloud/content/ha_pacemaker.html</a><br><a href="https://wiki.openstack.org/wiki/Neutron/L3_High_Availability_VRRP">https://wiki.openstack.org/wiki/Neutron/L3_High_Availability_VRRP</a><br>
<br></div><div>hope it helps<br><br></div><div>Damon<br></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">2014-03-10 9:56 GMT+08:00 BYEONG-GI KIM <span dir="ltr"><<a href="mailto:kimbyeonggi@gmail.com" target="_blank">kimbyeonggi@gmail.com</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi.<div><br></div><div>I'm a new of OpenStack and getting started learning it.</div><div><br></div><div>
I've been reading several documents, e.g., installation guide, administrator guide, etc, and I finally have doubts about how OpenStack could be scalable.</div>
<div><br></div><div>According to the architecture design, like <a href="http://docs.openstack.org/security-guide/content/figures/8/static/1aa-network-domains-diagram.png" target="_blank">http://docs.openstack.org/security-guide/content/figures/8/static/1aa-network-domains-diagram.png</a>, Network Node seems that it must be accessed before communicating to external network. </div>

<div><br></div><div>It means that the Network Node seems having a role for forwarding and even routing packets so that the centralized design would cause congestion problem. If every data packets must pass through the Network Node, I think it is not reasonable design from the point of view of networking.</div>

<div><br></div><div>My questions are;</div><div><br></div><div>1. Could multiple Network Nodes be set up in order to decentralize the traffic and avoid congestion?</div><div><br></div><div>2. If I misunderstood about the concept of Network Node, would you explain about it in detail?</div>

<div><br></div><div>Thank you in advance!</div><div><br></div><div>Best regards</div><span class="HOEnZb"><font color="#888888"><div><br></div><div>Byeong-Gi KIM</div></font></span></div>
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