![[Note]](../common/images/admon/note.png) | Note |
|---|---|
While this guide currently enables network namespaces by default, you can disable them if you have issues or your kernel does not support them. If you disabled namespaces, you must perform some additional configuration for the L3 agent. After you create all the networks, tell the L3 agent
what the external network ID is, as well as the ID of
the router associated with this machine (because you are
not using namespaces, there can be only one router for
each machine). To do this, edit the
gateway_external_network_id = Then, restart the L3 agent: # service neutron-l3-agent restart |
When creating networks, you should use the options:
--provider:network_type gre --provider:segmentation_id SEG_ID
SEG_ID should be
2 for the external network, and just
any unique number inside the tunnel range specified before
for any other network.
| Note |
|---|---|
These options are not needed beyond the first network, as Neutron automatically increments the segmentation id and copy the network type option for any additional networks. |
Now, return to the general OVS instructions.
