Random shower thought: GBIC with LC connector...

Tue Nov 15 16:44:01 UTC 2022

Those are Twin Gig Converter Modules.  They went in the 3560 series (and probably others).  You could either insert a 10 gig module, or the converter module and get 2 1-gig sfp slots.

-----Original Message-----
From: "Matt Erculiani" <merculiani at gmail.com>
Sent: Tuesday, November 15, 2022 11:26am
To: "Mel Beckman" <mel at beckman.org>
Cc: "North American Network Operators' Group" <nanog at nanog.org>
Subject: Re: Random shower thought: GBIC with LC connector...

I feel like I've seen GBIC sleeves that accept SFP modules very similar to QSFP+ CVRs, but I can't seem to find any evidence of these ever existing, so perhaps I'm misremembering. 
-Matt

On Tue, Nov 15, 2022 at 9:23 AM Mel Beckman <[ mel at beckman.org ]( mailto:mel at beckman.org )> wrote:Oh. And it’s not “OCD”. It’s “CDO”, with letters in ascending sequence. :)

 -mel via cell

 > On Nov 15, 2022, at 8:18 AM, Mel Beckman <[ mel at beckman.org ]( mailto:mel at beckman.org )> wrote:
 > 
 > No. GBIC stands for Great Big Inserted Cartridge. LC stands for Little Connector. Thus they are not compatible. 
 > 
 > -mel via cell
 > 
 >> On Nov 15, 2022, at 7:59 AM, Warren Kumari <[ warren at kumari.net ]( mailto:warren at kumari.net )> wrote:
 >> 
 >> 
 >> Hi there all,
 >> 
 >> While looking through my big box of random optics I suddenly realized that I'd never seen a GBIC with an LC connector, and I started wondering if anyone else had / if such a thing actually exists.
 >> 
 >> Yes, I realize that this would be a fairly niche device - if you arrived somewhere with a device that took GBICs and there was existing fiber with LC connectors you could just replace the patch cable or use an LC-SC convertor, but that doesn't really satisfy my curiosity.
 >> 
 >> A quick look through the GBIC MSA / SFF documentation implies that such a thing *could* probably exist (there is a defined value for the 'LC' connector), but I wasn't able to actually find any. It might not actually be compliant with the specs (the document I found only lists SC fiber or copper (coax with BNC, TNC or DB-9?!)), but that doesn't mean that no-one made them.
 >> 
 >> So, has anyone seen a regular (30mm/1.2") GBIC with LC connectors? And, if so, "pics or it didn't happen"... :-)
 >> 
 >> Obviously I don't have an actual use for this, it's just to satisfy my (OCD) curiosity...
 >> W
 >> 
 >> 
-- 

Matt Erculiani
ERCUL-ARIN
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