crossbow discuss - Nov 2007 - Does crossbow check the duplicate MAC address?

Hi All,
>From the design documents, I see there is an option
"DLADM_VNIC_OPT_NODUPCHECK" for checking if the vnic MAC is unique on
the same physical NIC.
I have a question here. Does crossbow check if the MAC address is unique
on the same subnet? E.g, create a vnic on hostA with hostB''s MAC
address.

Thanks,
Karol

Hi Karol,

On Nov 19, 2007, at 8:30 PM, karol wrote:
> Hi All,
>> From the design documents, I see there is an option
> "DLADM_VNIC_OPT_NODUPCHECK" for checking if the vnic MAC is
unique on
> the same physical NIC.
> I have a question here. Does crossbow check if the MAC address is  
> unique
> on the same subnet? E.g, create a vnic on hostA with hostB''s MAC  
> address.
The check is only done for MAC clients (VNICs are one type of MAC  
clients) defined on top of the same underlying MAC instance (for  
example NIC), but there''s currently no check to ensure that the same  
MAC address is not used somewhere else on the network. Note that the  
architecture doesn''t prevent such a feature to be implemented in the  
future, but it''s not currently planned for our initial putback.

Nicolas.
>
> Thanks,
> Karol
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-- 
Nicolas Droux - Solaris Core OS - Sun Microsystems, Inc.
droux at sun.com - http://blogs.sun.com/droux