Appendix D. Shared Memory Communications 499
Table D-2 shows a list of required APARs per z/OS subsystem.
Table D-2 Table with prerequisite APARs for SMC-D enablement
D.3.10 Enabling SMC-D support in z/OS Communications Server
The new parameter SMCD (see Figure D-19) will be available on the GLOBALCONFIG
statement in the TCP/IP profile of the z/OS Communications Server (similar to the SMCR
parameter). The SMCD parameter is the only parameter that is required to enable SMC-D.
The key difference from the SMCR parameter is that ISM PFIDs are not defined in TCP/IP.
Rather, ISM FIDs are discovered automatically based on matching PNETID associated with
the OSD or HiperSockets. Figure D-19 shows an extract from z/OS Communications Server:
IP Configuration Reference.
Figure D-19 SMCD parameter in GLOBALCONFIG
Subsystem FMID APAR
IOS HBB77A0 OA47913
CommServer SNA VTAM HVT6220 OA48411
CommServer IP HIP6220 PI45028
HCD HCS77A0
HCS7790
HCS7780
HCS7770
HCS7760
HCS7750
OA46010
IOCP HIO1104 OA47938
HCM HCM1F10
HCM1E10
HCM1D10
HCM1C10
HCM1B10
HCM1A10
IO23612
Restrictions: SMC (existing architecture) cannot be used in these circumstances:
Peer hosts are not within the same IP subnet and VLAN
TCP traffic requires IPSec or the server exploits FRCA.
>>-GLOBALCONFig-------------------------------------------------------->
.--------------------------------------------------------------.
V |
>-----+--------------------------------------------------------+--+--><
: :
| .-NOSMCD---------------------------------------------. |
| | | |
+-+----------------------------------------------------+-+
| | .-------------------------------------------. | |
| | V | | |
| '-SMCD---+---------------------------------------+-+-' |
| | .-FIXEDMemory--256------. | |
| +---+-----------------------+-----------+ |
| | '-FIXEDMemory--mem_size-' | |
| | .-TCPKEEPmininterval--300------. | |
| '---+------------------------------+----' |
| '-TCPKEEPmininterval--interval-' |
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