Hi Anil,

I tested it with Mellanox NIC and it working

16: enp6s0d1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode 
DEFAULT group default qlen 1000                                                 
        
    link/ether 00:02:c9:e9:c2:12 brd ff:ff:ff:ff:ff:ff                          
                                                                                
        
    vf 0 MAC 00:00:00:00:00:00, vlan 4095, spoof checking off, link-state auto  
                                                                                
        
    vf 1 MAC 00:00:00:00:00:00, vlan 4095, spoof checking off, link-state auto  
                                                                                
        
    vf 2 MAC 00:00:00:00:00:00, vlan 4095, spoof checking off, link-state auto  
                                                                                
        
    vf 3 MAC 00:00:00:00:00:00, vlan 4095, spoof checking off, link-state auto  
                                                                                
        
    vf 4 MAC 00:00:00:00:00:00, vlan 4095, spoof checking off, link-state auto  
                                                                                
        
    vf 5 MAC fa:16:3e:0d:8c:a2, vlan 192, spoof checking on, link-state enable  
                                                                                
        
    vf 6 MAC fa:16:3e:0d:8c:a2, vlan 190, spoof checking on, link-state enable  
                                                                                
        
    vf 7 MAC 00:00:00:00:00:00, vlan 4095, spoof checking off, link-state auto  
 

I guess the problem is with the SR-IOV NIC/ driver you are using maybe you 
should contact them 


-----Original Message-----
From: Moshe Levi 
Sent: Wednesday, August 10, 2016 5:59 PM
To: 'Miguel Angel Ajo Pelayo' <majop...@redhat.com>; OpenStack Development 
Mailing List (not for usage questions) <openstack-dev@lists.openstack.org>
Cc: Armando M. <arma...@gmail.com>
Subject: RE: [openstack-dev] [neutron] Neutron Port MAC Address Uniqueness

Miguel, 

I talked to our driver architect and according to him this is vendor 
implementation (according to him this  should work with  Mellanox NIC) I need 
to verify that this indeed working. 
I will update after I will prepare SR-IOV setup and try it myself.


-----Original Message-----
From: Miguel Angel Ajo Pelayo [mailto:majop...@redhat.com]
Sent: Wednesday, August 10, 2016 12:04 PM
To: OpenStack Development Mailing List (not for usage questions) 
<openstack-dev@lists.openstack.org>
Cc: Armando M. <arma...@gmail.com>; Moshe Levi <mosh...@mellanox.com>
Subject: Re: [openstack-dev] [neutron] Neutron Port MAC Address Uniqueness

@moshe, any insight on this?

I guess that'd depend on the nic internal switch implementation and how the 
switch ARP tables are handled there (per network, or global per switch).

If that's the case for some sr-iov vendors (or all), would it make sense to 
have a global switch to create globally unique mac addresses (for the same 
neutron deployment, of course).

On Wed, Aug 10, 2016 at 7:38 AM, huangdenghui <hdh_1...@163.com> wrote:
> hi Armando
>     I think this feature causes problem in sriov scenario, since sriov 
> NIC don't support the vf has the same mac,even the port belongs to the 
> different network.
>
>
> 发自网易邮箱手机版
>
>
> On 2016-08-10 04:55 , Armando M. Wrote:
>
>
>
> On 9 August 2016 at 13:53, Anil Rao <anil....@gigamon.com> wrote:
>>
>> Is the MAC address of a Neutron port on a tenant virtual network 
>> globally unique or unique just within that particular tenant network?
>
>
> The latter:
>
> https://github.com/openstack/neutron/blob/master/neutron/db/models_v2.
> py#L139
>
>>
>>
>>
>> Thanks,
>>
>> Anil
>>
>>
>> _____________________________________________________________________
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