First, you need to verify that you have a 2 PCHID OSA. There will be either one or two ports at the top and the same number of ports at the bottom of the card.

Assuming you have all 4 ports, the top two ports are Port 0 and Port 1 on PCHID 190. The bottom two ports are Port 0 and Port 1 on PCHID 191.

You need to pic one PCHID for OSC and one for OSE.

Concerning the OSC, you really only have one usable port. While the second port can be set, you can't use the same IP-port value nor does the second port have it's own route setting. And, even if you set it up, it shares the same terminal configurations. (Yes, there are ways to use the second port, but they are limited and mostly not worth the effort.) All the settings for the OSC are configured via the HMC. The only thing the OS knows is the CCUU address for the terminals as they need to be either consoles to z/OS or in a VTAM book.

As for the OSE, you will normally need an OAT if the OSA is only used for TCP/IP. But, I have had some 'strange' problems when I did not use an OAT for an TCP/IP, so I always use an OAT. If you are using the OSE for VTAM/SNA, then you must have an OAT. The OSA port (0 or 1) is set in the TCP/IP configuration, not in the IOCP.

The OSA cards can be shared across LPARs. They can even have the same CCUU address in each LPAR. I regularly share both the OSC addresses and the OSE addresses. So, in any LPAR, the consoles (OSC) are all the same address (080-087) and the TCP/IP ccuu addresses are the same between TCP/IPs.

Tony Thigpen

(K.K.Paradox)T.Kobayashi wrote on 9/10/21 4:36 AM:
Hello,

I planing to configure z/OS's native TCP/IP on z10-BC machine.
IOCP DECK is shown at the end of this mail.
The OSA-ICC 3270 sessions are currently configured.
OSE CHPID is defined, but nothing else is configured.

I understand that OSE (Non-QDIO mode) requires UA and port, IP addr, mapping
in OAT.
Also, OAT and z/OS TCPIP PROFILE (DEVICE and LINK) setting will mapping.
But, I don't understand how to assgin the OSA Physical ethernet ports.

Qeustions:
1) Is the port set in OAT a OSA Physical port?

2) Can OSA-ICC 3270 sessions and OSE ports share a OSA Physical port?
Should these have separate Physical ports?

3) Where is the physical port of the OSA-ICC session set?

4) OSE is assigned to ZOS2 LPAR in the PARTITION statement.
But SHARED is also specified by CHPID.
Are OSE devices also available in ZOS1 LPARs?

RESOURCE PARTITION=((CSS(0),(ZOS1,1),(ZOS2,2)))
*
CHPID PCHID=190,PATH=(CSS(0),02),TYPE=OSC,SHARED
CHPID PCHID=191,PATH=(CSS(0),03),TYPE=OSE,SHARED,PARTITION=((ZOS2))
*
CNTLUNIT CUNUMBR=0F00,PATH=((CSS(0),02)),UNIT=OSC
CNTLUNIT CUNUMBR=0F10,PATH=((CSS(0),03)),UNIT=OSA
*
IODEVICE ADDRESS=(0F00,8),CUNUMBR=(0F00),UNIT=3270,MODEL=X,           +
               PARTITION=((CSS(0),ZOS1))
IODEVICE ADDRESS=(0F10,8),CUNUMBR=(0F00),UNIT=3270,MODEL=X,           +
               PARTITION=((CSS(0),ZOS2))
IODEVICE ADDRESS=(0F20,8),CUNUMBR=(0F00),UNIT=3286,MODEL=2,           +
               PARTITION=((CSS(0),ZOS1))
IODEVICE ADDRESS=(0F30,8),CUNUMBR=(0F00),UNIT=3286,MODEL=2,           +
               PARTITION=((CSS(0),ZOS2))
IODEVICE ADDRESS=(0E10,15),UNITADD=00,CUNUMBR=(0F10),UNIT=OSA
IODEVICE ADDRESS=(0E1F),UNITADD=FE,CUNUMBR=(0F10),UNIT=OSAD

Best regards,
Toyokazu Kobayashi

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