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How to use a switch instead of NAT

asked 2016-07-20 18:11:32 -0500

openstacking gravatar image

Hello I'm following the installation guide step by step at http://docs.openstack.org/mitaka/install-guide-ubuntu/environment-networking.html (http://docs.openstack.org/mitaka/inst...)

The only difference I'm making is to use a switch instead of NAT. I've manually modified the network interfaces as described in the installation guide but I fail to have access to the internet?

Any thoughts?

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answered 2016-07-24 22:32:03 -0500

tking gravatar image

I'd first see if your VM instance's MAC address shows up on the switch. Also, see if the switch port is set to tagged or untagged and add the network under the corresponding ml2 type (flat vs. VLAN). In that installation guide, it is Interface 2 that should be mapped.

If the instance's MAC shows up on the switch, can the VM ping the gateway? Do the subnet settings for that provider network match the router's subnet config?

If the instance's MAC does not show up on the switch after you try to ping, I'd double check your switch port config, network mapping, and ml2-vlan config.

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Asked: 2016-07-20 18:11:32 -0500

Seen: 107 times

Last updated: Jul 24 '16