Openstack on one NIC

asked 2013-05-07 21:44:34 -0500

keith-tobin gravatar image

With regard to quantum.

If one was to place the all networks on one 10G NIC ETH0 as follows,

Internal network on eth0 untagged say vlan 1 Public network on eth0 tagged to a vlan say 100 for the public traffic. Private network on eth0, using a tagged range say 1000 to 1500 as the pool of vlans.

I have looked at this configuration and feel that it should work with out problems. I am I correct in my thinking ?

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answered 2013-05-07 21:56:02 -0500

keith-tobin gravatar image

I just had a rethink and I am concerned that quantum expects to have a physical interface attached to the bridge on OVS, and can not be shared?

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answered 2013-05-08 00:08:25 -0500

rkukura gravatar image

Hi Keith,

I don't see any major problems with your approach. You would create br-eth0, add the eth0 interface to br-eth0 as a port, and set things up so the machine gets its "internal network" IP on the internal port of br-eth0 at boot.

If you your concern is about needing a separate OVS bridge (br-ex) for the l3-agent to access the "public network", you can use a provider network instead. Just set external_bridge to the empty string instead of "br-ex" in l3-agent.ini, and then create your external network passing "--provider:network_type vlan --provider:physical_network <whatever> --provider:segmentation_id 100". This will result in l3-agent connecting to the the public network via the normal br-int<->veth<->br-eth0 mechanism.


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answered 2013-10-06 13:44:55 -0500

keith-tobin gravatar image

Thanks Robert Kukura, that solved my question.

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Asked: 2013-05-07 21:44:34 -0500

Seen: 113 times

Last updated: Oct 06 '13