1. As documentations says, CTC over FICON require two ports connected
with a cable (similar to ESCON), or single port, but it has to be
connected to a switch. Absolutely no loopback is ever used.
2. Don't confuse loopback and dust-cover. The first is really a piece of
fiber optic with ferrules. The second one is just a piece of gum or
plastic. Note: you should have spare dust covers in place, never leave
fiber optic uncovered.
Regards
--
Radoslaw Skorupka
Lodz, Poland
W dniu 02.06.2020 o 14:00, Edgington, Jerry pisze:
Alan,
Just curious, but does using FCTCs use less MSUs than XCF structures?? Also, I
believe you can use the FICON terminators, and loop the FICON back to itself.
However, I haven't done it myself, because normally, during installation IBM
removes all the FICON terminators.
Thanks,
Jerry
-----Original Message-----
From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of
Allan Staller
Sent: Tuesday, June 2, 2020 7:57 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Base SYSPLEX setup
This message was sent from an external source outside of Western & Southern's
network. Do not click links or open attachments unless you recognize the sender and
know the contents are safe.
________________________________________________________________________________________________________________________
A total of 4 ficon ports are required with 2 cables. The FICON CTC's can be
shared by all connected LPARs via PATHIIN/PATHOUT in SYS1.PARMLIB(COUPLExx).
-----Original Message-----
From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of
Timothy Sipples
Sent: Tuesday, June 2, 2020 12:07 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Base SYSPLEX setup
[CAUTION: This Email is from outside the Organization. Unless you trust the
sender, Don’t click links or open attachments as it may be a Phishing email,
which can steal your Information and compromise your Computer.]
Brian,
1. If you haven't also looked at IBM Publication No. SB10-7174 yet, I'd refer you to that
one ("IBM Z FICON Channel-to-Channel Reference"). I believe you've found
SG24-5451 already.
2. You might not need additional FICON Express features at all. It depends on how you're
set up, but there's quite a bit of link sharing that's possible. Quoting IBM, "A
FICON channel with CTC capability may behave as both a standard FICON channel connecting
to standard FICON I/O control units, as well as having an internal CTC control unit
function in support of CTC connections.... Neither FICON channel must be dedicated
exclusively to CTC operations."
If you have (for example) two machines connected to at least one common FICON
SAN switch/director then you're *probably* good to go from a physical point of
view, for some minimum level of service anyway. Sure, do due diligence in terms
of performance and such, but it seems like a better idea to me to leave these
machines physically unmolested if possible rather than try to hack something in
(that's withdrawn from marketing).
There was probably some point in "ancient history" when the various sharing
options weren't available, but I believe all FICON-equipped z/Architecture machines have
these various CTC-related sharing capabilities at least in some fashion. SB10-7174
repeatedly refers to an engineering change (EC) that was available at least as far back
as the IBM
z900 from what I can tell.
- - - - - - - - - -
Timothy Sipples
I.T. Architect Executive
Digital Asset & Other Industry Solutions IBM Z & LinuxONE
- - - - - - - - - -
E-Mail: sipp...@sg.ibm.com
======================================================================
Jeśli nie jesteś adresatem tej wiadomości:
- powiadom nas o tym w mailu zwrotnym (dziękujemy!),
- usuń trwale tę wiadomość (i wszystkie kopie, które wydrukowałeś lub zapisałeś
na dysku).
Wiadomość ta może zawierać chronione prawem informacje, które może wykorzystać
tylko adresat.Przypominamy, że każdy, kto rozpowszechnia (kopiuje, rozprowadza)
tę wiadomość lub podejmuje podobne działania, narusza prawo i może podlegać
karze.
mBank S.A. z siedzibą w Warszawie, ul. Senatorska 18, 00-950
Warszawa,www.mBank.pl, e-mail: kont...@mbank.pl. Sąd Rejonowy dla m. st.
Warszawy XII Wydział Gospodarczy Krajowego Rejestru Sądowego, KRS 0000025237,
NIP: 526-021-50-88. Kapitał zakładowy (opłacony w całości) według stanu na
01.01.2020 r. wynosi 169.401.468 złotych.
If you are not the addressee of this message:
- let us know by replying to this e-mail (thank you!),
- delete this message permanently (including all the copies which you have
printed out or saved).
This message may contain legally protected information, which may be used
exclusively by the addressee.Please be reminded that anyone who disseminates
(copies, distributes) this message or takes any similar action, violates the
law and may be penalised.
mBank S.A. with its registered office in Warsaw, ul. Senatorska 18, 00-950
Warszawa,www.mBank.pl, e-mail: kont...@mbank.pl. District Court for the Capital
City of Warsaw, 12th Commercial Division of the National Court Register, KRS
0000025237, NIP: 526-021-50-88. Fully paid-up share capital amounting to PLN
169.401.468 as at 1 January 2020.
----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
