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Fuel 7.0 Neutron L2/L3 Networking Configuration?

asked 2015-10-16 08:47:53 -0500

kclev gravatar image

updated 2015-10-16 08:50:34 -0500

Can anyone tell me if the L2/L3 Neutron configuration part in Fuel 7.0 (at the bottom of the "networks" tab") is physical or logical? I mean do I need to create VLAN's 1000-1030 on my switches? The reason I ask is that I feel I am very close to successfully deploying if I can just get it to pass the network verification tests. Right now it is failing on the VLAN's set under Neutron L2 config. The error I'm getting is "Expected VLAN (not received) 1000, 1001.....1029, 1030". All of the other network configuration seems good to go. I'm using Neutron with VLAN segmentation, not GRE.

One interface is admin network and the other is public, private, storage, and management.

Any help would be greatly appreciated.

Thanks for your time.

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It's not quite clear why you prefer VLAN vs VXLAN (GRE) segmentation for tenants networks.

dbaxps gravatar imagedbaxps ( 2015-10-16 09:08:30 -0500 )edit

We don't have the ability to do VXLAN easily on our switches so we are using VLAN instead. I don't think it would make a difference for the problem we are experiencing or the unanswered question we have??

kclev gravatar imagekclev ( 2015-10-16 09:31:45 -0500 )edit

2 answers

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answered 2015-10-16 14:18:36 -0500

mpetason gravatar image

The VLAN configuration is used for Private networks. 1000-1030 are the default tags associated with the install, however you can configure whichever VLANs you want. I'd recommend having enough VLAN tags to allow for at least 1 network per tenant you are going to have. It's better to create a larger range to start with.

The interface on the switch will need to be configured as a Trunk. If you were using 1000-1030 it would be something like:

switchport trunk allow vlan 1000-1030

You'll want to setup the VLANs as well on the switch. Basically every tenant network is going to pull a Segment ID which = the VLAN tag.

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That makes sense- let me give it a try now that I have that cleared up :)

kclev gravatar imagekclev ( 2015-10-16 14:52:28 -0500 )edit

@mpetason and @dbaxps Thanks to the both of you for the help. I provisioned the extra VLANs needed for Neutron L2 across our switches and Fuel is passing the network verification tests now.

kclev gravatar imagekclev ( 2015-10-17 08:09:24 -0500 )edit

answered 2015-10-16 11:07:55 -0500

dbaxps gravatar image

updated 2015-10-17 02:37:28 -0500

Take a look at
Per link provided :-

I had this problem as well and my solution was to trunk the ports to which openstack was connected and create the vlans (range) on the switch itself.

    interface Eth1/1 - 30
    switchport mode trunk
    switch port trunk allowed vlan all
    vlan 100-200

This trunked the ports on the switch (physical ports 1 through 30), allowed all vlan traffic, and then let the switch know about vlans in the range 100 through 200. After that, openstack (the virtual interfaces neutron's agents create) will tag the outbound traffic for vlans 100 through 200 (allowed vlans setting in the neutron configuration options) and the switch will accept and route that traffic.

So , the respond of @mpetason does make sense, however reference provided up here doesn't
I guess I need improve my English ASAP.

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Thanks for the link, but I specifically want to know about the Neutron L2/L3 fields on the network tab in Fuel. I would think these would be virtual networks that Neutron would create, but it's not clear to me, and it's failing the network verification on those VLAN's, so looking for clarification.

kclev gravatar imagekclev ( 2015-10-16 11:27:31 -0500 )edit

Did you solve the problem?

Sofiane68 gravatar imageSofiane68 ( 2016-04-07 10:21:27 -0500 )edit

I am Still facing Issue

owaisahmad11 gravatar imageowaisahmad11 ( 2017-10-27 14:26:44 -0500 )edit

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Asked: 2015-10-16 08:47:53 -0500

Seen: 4,393 times

Last updated: Oct 17 '15