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This article introduces how to access the configuration of the public network ML2, the content is very detailed, interested friends can refer to, I hope it can be helpful to you.

Communication between instance located in different vlan can be realized through router.

The next question to be discussed is how instance communicates with external networks.

The external network here refers to a network other than the tenant network. A tenant network is a network created and maintained by Neutron. External networks are not created by Neutron. If it is a private cloud, the external network usually refers to the corporate intranet;. If it is a public cloud, the external network usually refers to the internet.

Specific to our experimental network environment: the computing node and the control node eth2 provide the tenant network, and the tenants in the IP segment can be set up freely. The control node eth3 is connected to the external network, and the IP segment is 10.10.10.Universe 24.

Configuration preparation

In order to connect to the external network, you need to tell Neutron the type of external network and the corresponding physical network card in the configuration file.

Because the external network is an existing physical network, it is generally of the flat or vlan type.

Here we name the label of the external network "external". If the type is flat, control node / etc/neutron/plugins/ml2/ml2_conf.ini

After modifying the configuration, you need to restart the related services of neutron.

In our network environment, the external network is the flat type.

This is the end of the configuration on how to access the public network ML2. I hope the above content can be helpful to you and learn more knowledge. If you think the article is good, you can share it for more people to see.

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