libvirt users - May 2016 - Re: Need information

Hi,

Referring to the link http://wiki.libvirt.org/page/VirtualNetworking,  the
scenario  described for the routed mode, explains that

"Host has public IP and virtual machines have static public IPs. But one
can't use bridged networking, since provider accept only packets from the
MAC address of the host"

Can someone explain to me why doesn't the switch accept the packets from
the guest vms' mac addresses also since they have public IPs  in the
bridged mode ?


Thanks
Kumar

Hi,

in bridge mode all the guests and hosts should be in the same subnet always
?


Thanks
Kumar

On Sun, May 22, 2016 at 12:41 AM, Laine Stump <laine@laine.org> wrote:
> On 05/20/2016 03:21 AM, Gk Gk wrote:
>
> Hi,
>
> Referring to the link http://wiki.libvirt.org/page/VirtualNetworking,
>  the scenario  described for the routed mode, explains that
>
> "Host has public IP and virtual machines have static public IPs. But
one
> can't use bridged networking, since provider accept only packets from
the
> MAC address of the host"
>
> Can someone explain to me why doesn't the switch accept the packets
from
> the guest vms' mac addresses also since they have public IPs  in the
> bridged mode ?
>
>
> Because the people who have administrative control over the switch have
> configured it that way. (Of course, if they're that restrictive,
it's
> doubtful that they would allocate an entire subnet to a customer's
machine,
> and reconfigure their routing tables to deal with it).
>
>