[172593] in North American Network Operators' Group
Re: Finisar SFP/SFP+
daemon@ATHENA.MIT.EDU (Jared Mauch)
Tue Jun 24 17:13:37 2014
X-Original-To: nanog@nanog.org
From: Jared Mauch <jared@puck.nether.net>
In-Reply-To: <20140624203747.GX1897@angus.ind.WPI.EDU>
Date: Tue, 24 Jun 2014 17:11:38 -0400
To: Chuck Anderson <cra@WPI.EDU>
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Jun 24, 2014, at 4:37 PM, Chuck Anderson <cra@WPI.EDU> wrote:
> Cheap DIY SFP programmer using a Raspberry Pi:
>=20
> =
http://eoinpk.blogspot.com/2014/05/raspberry-pi-and-programming-eeproms-on=
.html
>=20
> Software:
>=20
> https://code.google.com/p/sfppi/
>=20
> Now we just need some code to brute-force the OEM passwords... How
> fast is the 2-wire bus on SFPs?
This seems like overkill. I have been asking my vendors for the ability =
to deal with the SFF-MSA data properly and to not break their own optics =
in their own devices. (Yes, I've seen this).
I prefer my XFP/CFP/SFP/SFP+ ports unlocked properly from the factory =
and the ability to display all the SFF-MSA fields. So far everyone is =
making high quality CFP parts so I've not seen anything "odd" there =
aside from some vendors don't realize that 100G-LR4 should display all 4 =
lanes light levels.
If you are buying cheap SFPs you get what you pay for. We have had good =
luck with Finisar and Finisar OEM, which are available broadly in the =
market for a fair price. The best way to discourage the locking is to =
stop buying the optics from those that do engage in the locking =
activities.
It would also be helpful to list those optics that are poor in quality =
as well. This also may provide an incentive to those in the marketplace =
to improve them. (eg: I have no problem with a vendor blocking the same =
S/N from appearing multiple times in a chassis from a "cloned" optic, =
but if they are putting that effort into the driver, they also need to =
support their own optics in the chassis as well).
If nobody is aware of a SFP/XFP/CFP/whatnot database out there, perhaps =
we can crowdsource one as a community? This seems to be something that =
may provide value.
- jared=
