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unable to assign floating ip to instance

asked 2015-05-07 19:14:13 -0500

madschuy gravatar image

I am using OpenStack Juno, Neutron Networking with Tenant VLAN's. Everything is working properly except I receive an error when attempting to assign a floating IP to the instance:

neutron floatingip-associate 169d55c5-5408-44dc-b645-36ee93bc1299 fc7ea728-d0c6-4e55-a22d-239021026f1d 

External network 3807be64-f86b-432a-9112-4a7999c1d5c2 is not reachable from subnet 8792635b-c77a-4444-86e3-e7ad1c2ca000.  Therefore, cannot associate Port fc7ea728-d0c6-4e55-a22d-239021026f1d with a Floating IP. (HTTP 404) (Request-ID: req-373bd1b5-c50d-4e83-9192-7dbfa05d369c)

I have a router configured with subnet, multiple instances created assigned within this subnet, and the default gateway of the router assigned to the external network. I can ping the external gateway from an instance as well as the public internet, so it appears the gateway is working properly.

Any advice is appreciated. Thanks

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answered 2015-05-12 12:19:54 -0500

It sounds to me like you're missing the interface between your Subnet and Router. Try using this command, just place in the ID of your Router:

neutron router-interface-add ROUTER_ID SUBNET|subnet=8792635b-c77a-4444-86e3-e7ad1c2ca000

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Asked: 2015-05-07 19:14:13 -0500

Seen: 2,509 times

Last updated: May 07 '15