[ovirt-users] oVirt networking.

[matthew.st...@fujitsu.com]

oVirt newbie starting with 4.4.2.

Any good documentation on setting up networking?

I want to bond my two network interfaces.  The native interface will be uses 
for management.   All other traffic will be over tagged vlans.
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[ovirt-users] Ovirt Networking Setup Questions

[Dave Mintz]

Hello,

I am trying to understand, by reading all available docs, how to correctly set 
up networking.

What I have:

6 nodes, 1 engine - all have 3 nics.

What I want:
To separate traffic into three zones - ovirtmgmt, prod (for vm and admin web 
interface, data (for db access).

So, I have three subnets - 10.10.10.0, 10.10.20.0, and 10.10.30.0 - with 
matching VLANs 10, 20, 30

I am trying to understand how bonding and bridging work.  

Should I bond all three nics together?  The instructionshere: 
https://www.ovirt.org/documentation/how-to/networking/bonding-vlan-bridge/ 
 
seem to do that and then create two bridges br0 and ovirtmgmt, which they then 
assign ip addresses to.

I can do that, but shouldn’t I be configuring all of the networking at the 
logical network level?  So, in that case, should I just create one bond/bridge 
and then do all of the networking at the logical level?

Sorry if this is newbie stuff.

Thanks

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Re: [ovirt-users] oVirt Networking query

[Dan Kenigsberg]

On Fri, Apr 18, 2014 at 09:43:06PM +, Rudrajit Tapadar (rtapadar) wrote:
 Hi Lior,
 
 Thanks for your response. I¹ll surely take a look at the configurator.
 
 I have used macvtap in passthru mode on a eth to sniff all packets from
 all vlans. Hence I was wondering if this is supported in oVirt.
 
 -Rudrajit
 
 On 4/18/14, 1:56 PM, Lior Vernia lver...@redhat.com wrote:
 
 Hi Rudrajit,
 
 Welcome, I hope you'll like it! See comments inline.
 
 On 18/04/14 21:53, Rudrajit Tapadar (rtapadar) wrote:
  Hello!
  
  I am a newbie to ovirt and I had a couple of questions and I was hoping
  I could get some help.
  
   1. Does ovirt support openvswitch without going through Neutron? So far
  all the documents that I came across uses Neutron as an external
  network provider.
 
 At the moment it doesn't. However, this has been talked about and will
 probably be implemented at some point (though not sure when).
 
 In fact, if you're a developer, you could help make it happen yourself!
 A lot of the necessary nfrastructure has been recently laid down by
 this feature, which would only require someone to implement an OVS
 configurator:
 
 http://www.ovirt.org/Feature/NetworkReloaded

Non-developers are advised to use Vdsm hooks. You should start by
defining whatever network libvirt supports on each of your hosts. This
includes openvswitch (e.g.
http://libvirt.org/formatnetwork.html#elementVlanTag ).

Then, install the extnet hook on each of your hosts and define a vNIC
profile in oVirt-Engine with the extnet custom propery linking to your
openvswitch network. vNICs configures with the new profile would be
connected to openvswitch.

Similarly, if you define your libvirt network and a pool of host
devices (e.g. http://libvirt.org/formatnetwork.html#examplesDirect ) the
extnet hook would let you use macvtap.

I'd be happy to hear if it works for you, and to assist if it does not.

 
   2. Is there a support for macvtap in ovirt? I couldn¹t find anything on
  macvtap.
 
 Not at the moment, and I myself am not knowledgeable about macvtap.
 However, since Google tells me it should play well with libvirt, I'm
 guessing support for that might also be added by implementing a
 dedicated configurator.
 
 Following the said Google search however, I would be very interested to
 hear why it interests you, since oVirt handles bridge and tap device
 creation. What would be the gain in using specifically macvtap? I'm
 asking because this if there's good reason to do this, it might be
 prioritized in the future.

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[ovirt-users] oVirt Networking query

[Rudrajit Tapadar (rtapadar)]

Hello!

I am a newbie to ovirt and I had a couple of questions and I was hoping I could 
get some help.

  1.  Does ovirt support openvswitch without going through Neutron? So far all 
the documents that I came across uses Neutron as an external network provider.
  2.  Is there a support for macvtap in ovirt? I couldn’t find anything on 
macvtap.

I would appreciate your help.

Thanks,
Rudrajit
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Re: [ovirt-users] oVirt Networking query

[Lior Vernia]

Hi Rudrajit,

Welcome, I hope you'll like it! See comments inline.

On 18/04/14 21:53, Rudrajit Tapadar (rtapadar) wrote:
 Hello!
 
 I am a newbie to ovirt and I had a couple of questions and I was hoping
 I could get some help.
 
  1. Does ovirt support openvswitch without going through Neutron? So far
 all the documents that I came across uses Neutron as an external
 network provider. 

At the moment it doesn't. However, this has been talked about and will
probably be implemented at some point (though not sure when).

In fact, if you're a developer, you could help make it happen yourself!
A lot of the necessary nfrastructure has been recently laid down by
this feature, which would only require someone to implement an OVS
configurator:

http://www.ovirt.org/Feature/NetworkReloaded

  2. Is there a support for macvtap in ovirt? I couldn’t find anything on
 macvtap.

Not at the moment, and I myself am not knowledgeable about macvtap.
However, since Google tells me it should play well with libvirt, I'm
guessing support for that might also be added by implementing a
dedicated configurator.

Following the said Google search however, I would be very interested to
hear why it interests you, since oVirt handles bridge and tap device
creation. What would be the gain in using specifically macvtap? I'm
asking because this if there's good reason to do this, it might be
prioritized in the future.

Yours, Lior.

 
 I would appreciate your help.
 
 Thanks,
 Rudrajit
 
 
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