<p>There are many layers to that question :</p>
<ul>
<li>How did you deploy Openstack? This will heavily influence the flexibility you have the expose API access.</li>
<li>I assume you mean the Openstack API (nova,neutron,keystone,cinder) itself?</li>
</ul>
<p>Usually, the core API services are listening on your internal networks only.</p>

CC BY-SA 4.0
2022-07-23T12:35:54.717Z
2022-07-23T12:35:54.717Z
LaurentDumont
<p>I am trying to configure my server to utilize a secondary NIC card. I want the server to publish API access on both NICs at the same time. See the attached picture for a configuration diagram that shows that each server has two NICs, one configured with Internet access and the other wired to another server through a network switch.</p>
<p><a href="https://i.sstatic.net/E9Kia.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/E9Kia.png" alt="Shows the network configuration of my machines." /></a>
How do I make OpenStack utilize both NICs at the same time?</p>
<p>I've seen the multi-nic feature in OpenStack, but that seems to link OpenStack Networks together, not physical NICs. Another option I've looked into is using the routing tables, but I don't know if this is possible/best practice.</p>
<p>Thanks,</p>
<p>Taylor</p>

<networking><openstack>
OpenStack API Access over secondary ethernet connection or NIC
Taylor Eisman
# OpenStack API Access over secondary ethernet connection or NIC

(Asked by: username_0 on 2022-07-12)

I am trying to configure my server to utilize a secondary NIC card. I want the server to publish API access on both NICs at the same time. See the attached picture for a configuration diagram that shows that each server has two NICs, one configured with Internet access and the other wired to another server through a network switch.

[![Shows the network configuration of my machines.](https://i.sstatic.net/E9Kia.png)](https://i.sstatic.net/E9Kia.png)
How do I make OpenStack utilize both NICs at the same time?

I've seen the multi-nic feature in OpenStack, but that seems to link OpenStack Networks together, not physical NICs. Another option I've looked into is using the routing tables, but I don't know if this is possible/best practice.

Thanks,

Taylor

**Tags:** networking, openstack


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## 1 answers

### Answer by username_1 on 2022-07-23. Score: 0

There are many layers to that question :

* How did you deploy Openstack? This will heavily influence the flexibility you have the expose API access.
* I assume you mean the Openstack API (nova,neutron,keystone,cinder) itself?

Usually, the core API services are listening on your internal networks only.


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