[j-nsp] QFX3500 optics lock?

Jared Mauch jared at puck.nether.net
Tue Jan 10 07:41:32 EST 2012

I've always thought vendors that care about this would let you validate the serial online as genuine(and not stolen etc). This is a minimal effort IMHO. 

Jared Mauch

On Jan 10, 2012, at 5:07 AM, Phil Mayers <p.mayers at imperial.ac.uk> wrote:

> On 01/10/2012 12:35 AM, Richard A Steenbergen wrote:
>> In theory the way it's supposed to work is that a cryptographically
>> verifiable code based on the serial number (probably some sort of hash,
>> but no clue what they actually use) is written to the EEPROM. That way,
>> Cisco can give the actual manufacturers a list of SN's and codes equal
>> to the number of units they're purchasing, to prevent the classic
>> counterfeiting problem of the factory in China running during the day
>> for the customer and at night for themselves.
> That's something I've heard before, but to be frank it's always seemed a bit... highly organised, shall I say?... for the vendors to actually accomplish.
> Are you convinced that they're actually doing this? If so, I don't suppose you could share the evidence that convinced you? ;o)
> If nothing else, one wonders how things like the widely-available "XYZ Compatible" optics (or the flexBox) would work if this validation were taking place.
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