Open Systems Adapter / Support Facility

OSA/SF General Information

  • Be aware that the VM/ESA OSA/SF apar and ptf database is shared with OS/390 apar and ptf database. This allows an OSA and/or OSA/SF apar/ptf to be shared across different platforms. Ref item 5 in the VMOSASF220 PSP bucket.

  • (Added 01/03/01)
    For an OSA card to function, it needs both an OSA Address Table (OAT Table) and an IMAGE loaded onto the card. Some OSA cards also require a CONFIGURATION file as well. A few of the models of the OSA cards ship with a DEFAULT OAT Table and TCP/IP Passthru IMAGE already installed.

  • There are different types of OSA2 cards, some with 1 port and some with 2 ports...and even some with 'logical ports'! So there are too many options to not want an OSA2 card.

  • You CAN use your OSA2 card without the OSA/SF facility installed, providing you use TCP/IP connections only and the default device addresses.

  • All of the OSA2 cards (except the OSA2 ATM) are shipped with TCP/IP Passthru mode as the default mode. If you are going to run with default unit addresses/ports in TCP/IP Passthru mode then you do not need to do any customization to the OSA2 by OSA/SF.

    • Default Unit Addresses for Port 0 are 00,01
    • Default Unit Addresses for Port 1 are 02,03

  • From a VM TCP/IP point of view, each OSA2 card port is viewed as a LAN Channel Station (LCS) device. TCP/IP requires 2 device numbers/addresses per port...1 for Read/Receive, and 1 for Write/Send.

  • OSA/SF installation is needed if you are ever going to try and communicate with the OSA2 card.

  • OSA/SF runs with a Service Virtual Machine and has associated client userids for requesting OSA/SF functions and to execute the IOACMD commands:
    OSA/SF production server machine
    Administration userid 1
    Administration userid 2
    Administration userid 3
    OSA/SF Maintenance machine
    OSA/SF Installation userid

  • Entering IOACMD from OSADMINx userid will guide you through the command options and syntax (you can also refer to the OSA/SF Users Guide for commands and/or syntax).

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