On Monday, 02/02/2009 at 01:37 EST, Rob van der Heij <[email protected]>
wrote:
> On Mon, Feb 2, 2009 at 7:06 PM, Mark Pace <[email protected]> wrote:
>
> > If you're using a FICON chpid can't you just share the CHPID and
control
> > unit?  I didn't think a physical cable was require for FICON FCTC.
>
> I think that with FICON you also need a CNC and CTC device to couple.
> The CNC type chpid definition tells the channel to play control unit
> too. But I'm willing to learn...

According to the "ESCON and FICON Channel-to-Channel Reference,"
SB10-7034:
- ESCON does not require an ESCON director, but requires two chpids.
(Point-to-point.)
- FICON requires a FICON director, but only a single chpid.  (No
point-to-point.)

There are no internal wrap channels within a chpid.

Alan Altmark
z/VM Development
IBM Endicott

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