[ovs-discuss] communication between two ovs bridges

[David Gabriel]

Thanks for help.
In fact, I am in the second case you mentionned about openstack
configuration.
My objective is not using patch ports but ensuring the communication
between the two ovs bridges I created in my toplogy.
Shall I set new route to force using the ovs bridge in each VM or not ?

kind regards.

2017-03-09 17:38 GMT+01:00 Scott Lowe <scott.lowe at scottlowe.org>:

> Please see my reply inline, prefixed by [SL].
>
>
> On 03/09/2017 03:12 AM, David Gabriel wrote:
> > Thanks for your reply.
> > What do you suggest to ensure the communication between the VMs using my
> > topology.
> > It is possible to create it based on openstack.
> > Any help is welcome.
>
>
> [SL] Based on the information provided, I'm guessing that you want to
> run OVS inside a guest VM that is running on an OpenStack-managed
> hypervisor. If that is the case, then a lot will depend on how your
> OpenStack installation is configured:
>
> - If you are using OpenStack Neutron with another SDN solution
> underneath, that solution may not support NICs running in promiscuous
> mode, which I believe would be required in order to run OVS in a VM on
> top of OpenStack.
>
> - If you are using OpenStack Neutron with VLAN-backed networks, then you
> may be fine running OVS in a guest VM.
>
> If your primary interest is simply using patch ports to connect 2 OVS
> bridges, then I'd suggest running them in a single VM.
>
> I'm afraid we'll need more information in order to be able to help you.
>
>
> > Thanks in advance.
> > Best regards
> >
> > 2017-03-08 20:54 GMT+01:00 Scott Lowe <scott.lowe at scottlowe.org
> > <mailto:scott.lowe at scottlowe.org>>:
> >
> > On 03/08/2017 10:12 AM, David Gabriel wrote:
> >> Dears,
> >>
> >> I have defined two ovs bridges, each one of them is deployed in one
> >> Virtual Machine (VM) based on this simple topology:
> >>                     Internet ----- OVS1 ----LAN---- OVS2 -----Internet
> >> I used the following commands for OVS1:
> >> ovs-vsctl add-br mybridge1
> >> ifconfig mybridge1 up
> >> ovs-vsctl add-port eth1 mybridge1 //eth0 is dedicated for Internet
> >> ifconfig eth1 0
> >> ovs-vsctl add-port eth1 mybridge1
> >> ovs-vsctl set-controller mybridge tcp:AddressOfController:6633
> >>
> >> Then I added a patch port for each bridge based on this tutorial
> >>
> >> <http://blog.scottlowe.org/2012/11/27/connecting-ovs-
> bridges-with-patch-ports/
> >> <http://blog.scottlowe.org/2012/11/27/connecting-ovs-
> bridges-with-patch-ports/>>
> >> ovs-vsctl add-port mybridge1 patch2-1
> >> ovs-vsctl set interface patch2-1 type=patch
> >> ovs-vsctl set interface patch2-1 options:peer=patch2-1
> >>
> >> Then I tried to make the ping between the two VMs but it fails !
> >> Could you please tell me how to fix this problem.
> >
> >
> > It's my understanding that patch ports should only be used to connect
> > OVS bridges running on the same system. Since your bridges are across
> > two different VMs, using a patch port here won't work.
>
>
> --
> Scott
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.openvswitch.org/pipermail/ovs-discuss/attachments/20170310/80e762b7/attachment.html>