[191107] in North American Network Operators' Group

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Re: Arista unqualified SFP

daemon@ATHENA.MIT.EDU (Denys Fedoryshchenko)
Thu Aug 18 13:40:06 2016

X-Original-To: nanog@nanog.org
Date: Thu, 18 Aug 2016 15:51:13 +0300
From: Denys Fedoryshchenko <denys@visp.net.lb>
To: Mike Hammett <nanog@ics-il.net>
In-Reply-To: <533173717.4540.1471524103872.JavaMail.mhammett@ThunderFuck>
Cc: NANOG Mailing List <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org

Not a case with Intel X*710 new chipset, check is in firmware.
Someone hacked it, but ...

On 2016-08-18 15:41, Mike Hammett wrote:
> Intel does allow DAC of any vendor (assuming they properly identify as
> DACs. You can also disable Intel's check in the Linux drivers.
> 
> 
> 
> 
> -----
> Mike Hammett
> Intelligent Computing Solutions
> 
> Midwest Internet Exchange
> 
> The Brothers WISP
> 
> ----- Original Message -----
> 
> From: "Mikael Abrahamsson" <swmike@swm.pp.se>
> To: "Mark Tinka" <mark.tinka@seacom.mu>
> Cc: "nanog list" <nanog@nanog.org>
> Sent: Thursday, August 18, 2016 7:32:55 AM
> Subject: Re: Arista unqualified SFP
> 
> On Thu, 18 Aug 2016, Mark Tinka wrote:
> 
>> All other vendors, explicitly or silently, adopt the same approach.
> 
> I've heard from people running Intel NICs and HP switches, that this 
> can't
> be turned off there. You run into very interesting problems when you're
> trying to use DAC cables between multi vendor.
> 
> Any pointers to how to turn this of on Intel NICs and HP switches?

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