Have you looked at the IBM Redbook: IBM System z Connectivity Handbook  
SG24-5444-11

- Tim

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of 
Doug Fuerst
Sent: Tuesday, February 01, 2011 12:08 PM
To: [email protected]
Subject: Re: Fiber Cables


Assuming the OSA-3 is a SR (short wave or reach) you can use multimode 
50µ (aqua) cable for a distance of about 900ft. I am going through this 
now. There is a single mode option (If I remember correctly), but 
results in a shorter length. The 9µ core is pretty much standard for 50µ 
single or multimode. The difference is cladding and protective wrap. 
62.5µ is a bit bigger, orange, and used almost exclusively for ESCON. 
Tons of stuff on the web; I found most of it via Google. Good luck, and 
contact me off list if you need additional information, I think I can 
find it somewhere.

Doug Fuerst


On 2/1/2011 12:42 PM, Hal Merritt wrote:
> Two Issues.
>
> First, I've been tasked to procure the correct cables for a 
> OSA-Express3 (feature code 3370 on a 2098).
>
> The only specification I can find is '9 micron single mode fiber'. I'm 
> having trouble relating that specification to any verbiage on the 
> cables or their packaging. Can any one point me to a Rosetta Stone to 
> translate the various markings?
>
> This sounds an awful lot like a standard long wave FICON cable.
>
> Are these, in fact, one and the same? If so, can someone point me a 
> definitive IBM source? (This will be a mission critical application 
> and management wants 'works for sure' rather than 'should work').
>
>
> Second, the specific mission is to interconnect two 2098's. We could 
> use a switch (but that's a complicated solution) or we could use a 
> 'cross over' cable. I am thinking that all I have to do is swap the 
> polarity of one end of the fiber cable and I'm there.  Anyone that has 
> actually done this and have it in high volume production?  (Please, no 
> speculation).
>
> Thanks!!
>
>
>
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