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Network Creation

asked 2018-07-25 08:38:44 -0500

Mahmut Bro gravatar image


I am really confused crating network. First question is why I see project and admin option when we enter with admin user? I can be able to create network under both of them but why? Also, can I change network type of external subnet after creating it. For example, when I create external network under admin option, ı am not be able to create other than flat type.This is weird.

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Neutron provides Complete control over your networking infrastructure with customizable software defined networking with full IPv6 support for each tenent under each project.

TijoV gravatar imageTijoV ( 2018-07-25 09:47:05 -0500 )edit

2 answers

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answered 2018-07-25 10:20:01 -0500

updated 2018-07-25 10:24:51 -0500

Regarding the first question: Notice that the web forms for creating networks are different in the admin and the project sections. You can enter more details under admin.

Why? Because an admin user has more power than a normal user. An admin user can create external networks, and also networks for "foreign" projects, i.e. projects that admin is not a member of. All this is possible in the admin section.

In the project section, you just create a network in your project, like any other user. In particular, you can't change the project ID of the network, and you can't create an external one.

Second question: Once you have created an external network, you can't change its type. You can, however, delete it and create a new one. If you can only create flat networks, this is how your cloud has been configured (probably in ml2_conf.ini).

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answered 2018-07-25 13:36:38 -0500

Mahmut Bro gravatar image


For second answer, our physical topology has untagged vlan so I consider that I should create flat type. Is there any chance to change this?

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AFAIK only by deleting the external network and creating a new one. But flat seems to be the right solution in your case, as the physical host is not aware of the VLAN it is attached to.

Bernd Bausch gravatar imageBernd Bausch ( 2018-07-25 16:01:09 -0500 )edit

Hello, External interface seems down always in router. Do you know the reason of this?

Mahmut Bro gravatar imageMahmut Bro ( 2018-07-25 16:20:57 -0500 )edit

The reason might be that developers don’t see a need to update the status. Same for floating IP ports.

Bernd Bausch gravatar imageBernd Bausch ( 2018-07-25 16:40:43 -0500 )edit

However, I can't ping my router. Traffic does not pass.

Mahmut Bro gravatar imageMahmut Bro ( 2018-07-26 01:12:26 -0500 )edit

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Asked: 2018-07-25 08:38:44 -0500

Seen: 85 times

Last updated: Jul 25 '18