what about 48 bits?

David Andersen dga at cs.cmu.edu
Sun Apr 4 10:10:56 CDT 2010


There are some classical cases of assigning the same MAC address to every machine in a batch, resetting the counter used to number them, etc.;  unless shown otherwise, these are likely to be errors, not accidental collisions.

  -Dave

On Apr 4, 2010, at 10:57 AM, jim deleskie wrote:

> I've seen duplicate addresses in the wild in the past, I assume there
> is some amount of reuse, even though they are suppose to be unique.
> 
> -jim
> 
> On Sun, Apr 4, 2010 at 11:53 AM, A.B. Jr. <skandor at gmail.com> wrote:
>> Hi,
>> 
>> Lots of traffic recently about 64 bits being too short or too long.
>> 
>> What about mac addresses? Aren't they close to exhaustion? Should be. Or it
>> is assumed that mac addresses are being widely reused throughout the world?
>> All those low cost switches and wifi adapters DO use unique mac addresses?
>> 
> 
> 





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