Open Stack

Youngho:

On Mon, Sep 2, 2013 at 10:51 PM, yungho <yungho5054 at gmail.com> wrote:

> Hello,
>        I CentOs6.4 environment to deploy OpenStack G version, Controller
> Node, Network Node, Compute Node. Networks using Quantum, but is still on
> the Quantum network model do not know, and want to know under what
> circumstances the use of gre, under what circumstances the vlan mode.
>
>
Do you have administrative privileges on the networking switch that
connects your compute hosts together? If so, I would recommend using vlan
mode. You will need to configure your switch appropriately.

If you aren't able to modify the settings on your switch, or if your nodes
are not all connected to the same L2 network, then you will need to use GRE
tunnels.

I believe that GRE will work for pretty much all scenarios (since it just
requires IP connectivity), but I think it introduces some overhead.
However, I have no first-hand experience with it.

Take care,

Lorin
-- 
Lorin Hochstein
Lead Architect - Cloud Services
Nimbis Services, Inc.
www.nimbisservices.com
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