[openib-general] GUID/EUI-64 Issue

Hal Rosenstock halr at voltaire.com
Wed Dec 8 05:58:36 PST 2004


Hi,

Did we come to closure on how to handle the GUID/EUI-64 issue ?

-- Hal

On Thu, 2004-11-11 at 13:11, Roland Dreier wrote:
>  My only questions are:
> 
> +		eui[0] ^= 2;
> 
> I remember some discussion about whether IBTA GUIDs are already
> modified EUI-64 or not.  Is this the correct transformation or should
> we be doing something like "eui[0] |= 2;" (ie assume the universal bit
> should always be set in our IPv6 address)?  

IBTA GUIDs are EUI-64. The only issue I recall was whether the polarity
of the U/G bit was consistent with IEEE. This was updated at IBA 1.2. It
now says "manufacturer assigns EUI-64 with global scope set. May also
assign additional EUI-64 with local scope."






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