<div dir="ltr"><div class="gmail_extra"><br><br><div class="gmail_quote">On 21 May 2013 05:01, Zhidong Yu <span dir="ltr"><<a href="mailto:zdyu2000@gmail.com" target="_blank">zdyu2000@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">It seems there are two different meaning for this term. One is about a sort of usage scenario where the virtual network is <b>directly </b>mapped to a physical and instance is <b>directly </b>connected to the outside world without floating IP or L3 agent [1]. The word 'provider' in this context could be understood as external <i>provider </i>of network service.<br>
</div></blockquote><div><br></div><div style>In the openstack quantum terminology this is usually referred as an 'external' network; it is also sometimes referred as 'public' but the first term is probably more apt.</div>
<div style>An 'external' network can also be a 'provider' network. this would mean that the cloud admin has specified peculiar physical mappings for the network which will be used by tenant as an external gateway and/or for floating IPs.</div>
<div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">
<br>The other one is about a way to allow administrator to associate virtual networks with its underlying physical networks' name/type/segmentation_id, so that segregating between different types of network traffic can be achieved. This is done by Provider Extension [2]. <br>
</div></blockquote><div><br></div><div style>This is exactly what is usually referred as 'provider network'. Might the confusion arise from the fact that the 'External' network is typically a provider-owned network?</div>
<div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">
<br>Do I take it correct? If yes, then I am really confused by the section 5.1 of Quantum Admin Guide [3][4] where the Provider Extension is discussed but somehow the first meaning of Provider Network is referred. For instance, the highlighted words in the quotation below is very confusing. <br>
<br><blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex" class="gmail_quote">Provider networks allow cloud administrators to create
OpenStack Networking networks that map directly to
physical networks in the data center. <span style="background-color:rgb(255,255,0)"> This is commonly
used to give tenants direct access to a "public" network
that can be used to reach the Internet.</span> It may also be
used to integrate with VLANs in the network that already
have a defined meaning (e.g., allow a VM from the
"marketing" department to be placed on the same VLAN as
bare-metal marketing hosts in the same data
center).<br></blockquote></div></blockquote><div><br></div><div style>I agree this section might need to be clarified with some examples.</div><div style><br></div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr"><blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex" class="gmail_quote"></blockquote><br><br>[1] <a href="http://docs.openstack.org/trunk/openstack-network/admin/content/use_cases_single_flat.html" target="_blank">http://docs.openstack.org/trunk/openstack-network/admin/content/use_cases_single_flat.html</a><br>
[2] <a href="http://docs.openstack.org/trunk/openstack-network/admin/content/provider_attributes.html" target="_blank">http://docs.openstack.org/trunk/openstack-network/admin/content/provider_attributes.html</a><br>[3] <a href="http://docs.openstack.org/trunk/openstack-network/admin/content/provider_networks.html" target="_blank">http://docs.openstack.org/trunk/openstack-network/admin/content/provider_networks.html</a><br>
[4] <a href="http://docs.openstack.org/trunk/openstack-network/admin/content/provider_terminology.html" target="_blank">http://docs.openstack.org/trunk/openstack-network/admin/content/provider_terminology.html</a><br><br>
</div>
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