Alternative to unnumbered interface?

asked 2015-04-13 19:24:01 -0500

ethode gravatar image

I am using Ubuntu 14.04 on all nodes in my stack. I have 1 controller, 1 network, 3 compute and 2 storage nodes.

For the network node, in order to operate it needs to have an unnumbered interface on eth2, but my router which runs a variation of Vyatta software (Ubiquiti) doesn't support this feature.

What is the alternative to using an unnumbered port for the eth2 in the network node to make sure and assign static floating IP's to instances that can be accessed by the outside world?

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neutron will put an ip address on the qg- interface in the qrouter- namespace, and the qg- interface will be bridged to eth2. I'm not sure what the problem is ...

darragh-oreilly gravatar imagedarragh-oreilly ( 2015-04-14 10:41:16 -0500 )edit

@darragh-oreilly, I apologize but I don't know what what "qg-" interface is referring too. I am also not using name spaces.. I do have br-ex setup to use eth2 according to docs, but other than that I haven't setup any other bridges

ethode gravatar imageethode ( 2015-04-14 11:02:54 -0500 )edit

ok, so if you are not using namespaces, neutron will create a new interface with a name starting with "qg-" and put an IP address on it and put it in br-ex.

darragh-oreilly gravatar imagedarragh-oreilly ( 2015-04-14 12:18:27 -0500 )edit

@darragh-oreilly then the IP that neutron uses from the DHCP pool of external IP's SHOULD be associated with the qg- interface, am I correct in that assumption?

ethode gravatar imageethode ( 2015-04-14 12:24:04 -0500 )edit

neutron will use the first available ip address from the allocation pool of the neutron subnet associated with the network that the router is uplinked to.

darragh-oreilly gravatar imagedarragh-oreilly ( 2015-04-14 12:32:28 -0500 )edit

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answered 2015-06-04 14:13:52 -0500

Aaron Wong gravatar image

With my case is that I have no router but a firewall connected to my eth2, I configured the network node with ip forwarding function to enable other nodes to access internet, how should I configure it as unnumbered? any other options for this ? @darragh-oreilly

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Asked: 2015-04-13 19:24:01 -0500

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Last updated: Apr 13 '15