[Users] NIC problem with ovirt node

[Gianluca Cecchi]

On Sat, Jul 13, 2013 at 3:04 PM, Jason Keltz wrote:

>>>>
>>>> Happy to help (and yes it was hard to see...)
>>>>
>>> Actually, Mike -- two of my networks were private and didn't need a
>>> gateway... but two are public, and need a gateway!  Unfortunately, the
>>> interface seems to be missing that option!?  It lets you configure an
>>> IP, and a subnet mask, but where's the option for specifying a gateway
>>> if you're specifying static addresses... (my guess is that it picks up
>>> the gateway if you're using DHCP).
>>
>>
>> multiple gateways?
>> something like this?
>> http://www.ovirt.org/Features/Multiple_Gateways
>
>
> Yes.  Sort of -- simpler actually.
> I have 4 network interfaces in each node.
> My "management" network consists of a 1 Gbit switch connected to all the
> servers in our machine room.  Here, I don't need to specify a gateway since
> servers on this network talk to only each other.  Actually, I'm surprised I
> can't rename ovirtmgmt to something else to generalize it as just a
> "management network", but it's not a big deal, I guess.
> My "Storage" network consists of a 1 Gbit switch now - 10 Gbit soon.  Again,
> I don't need to specify a gateway here.
> Finally, the last 2 NICs are connected to the external network - a building
> switch that another Department controls.  Here, I definately need to specify
> a gateway, but of course with the current setup, I can't.  I will either
> have to hard code the gateway for these connections, or use DHCP.
> Since there is only one "gateway" for the external connectivity, all on the
> same VLAN, I don't think I need the more complicated iproute2 setup here.  I
> prefer to stay away from that if I can...
>
> I'm surprised this isn't a more common configuration.
>
> Jason.
>

Hello,
bu here in my opinion are mixing different things.
What Itamar indicated aims to address problems related to spice (aka
display) networks and ovirtmgmt network when they are different in
routing and currently the only gw for the host is on the ovirtmgmt
one.
When we are talking about VM networks in my opinion the gateway
settings has to be delegated at VM level not host level. Host needs
only to have physical connectivity.
Am I wrong?

For example in VMware if I configure a standard virtual switch and
then define a port group/ VM network on it, I only specify an optional
VLAN ID for this network and some policies for security, nic teaming
and traffic shaping.. no gateways at all.
And for its network adapters I configure speed, duplex

Gianluca