[Neutron, Devstack] Network Separation in Devstack with Neutron

asked 2014-01-20 05:07:23 -0600

muehsi gravatar image


I am looking for some details how Neutron (in DevStack) is separating the networks. I could find some superficial information, but didn`t find any details. Would be great if someone could tell me where I can find information on the technical side of separating networks.

Thanks in Advance!

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answered 2014-01-20 05:46:45 -0600

updated 2014-01-20 05:48:57 -0600

This may not be a complete answer, but could help you till some extent.

Talking about the technical side, in linux we have network namespaces. Do "man setns" or search for "netns" in "man ip" to see more detailed info about it.

When you create a network namespace, you can add ip routing tables, addresses in that namespace which will not affect your default network information or other networks created by Openstack. These network namespaces can be assigned to a specific process/device and hence that namespace will be confined to that process/device.

You should better look into the files in neutron/agent/linux where "ip netns" command are frequently used.

Hope this helps. Do let me know if you find more info about it. I would like to know as well. :)

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Thanks. Do you know where I can find which technology is done by openstack in the background? Like VLan, XLan, .... I guess it`s VLAN but I am not sure.

muehsi gravatar imagemuehsi ( 2014-01-20 07:01:23 -0600 )edit

Well, I am new to Openstack. I don't know much in detail. If I find out, I shall let you know. :-)

prasoontelang gravatar imageprasoontelang ( 2014-01-22 22:08:20 -0600 )edit

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Asked: 2014-01-20 05:07:23 -0600

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Last updated: Jan 20 '14