IBM z13s, Technical Manual

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IBM z13s Technical Guide
4. Enable SMC-D in at least two z/OS instances (single parameter in TCP/IP Global
configuration). Both z/OS instances must execute on the same CPC.
5. Review and adjust as needed available real memory and fixed memory usage limits (z/OS
and CS). SMC requires fixed memory. You might need to review the limits and provision
additional real memory for z/OS.
6. Review IP topology, VLAN usage considerations, and IP security (SMC-R Security White
paper).
7. Run the Shared Memory Communications Applicability Tool (SMC-AT) to evaluate
applicability and potential value.
8. Review changes to messages, monitoring information and diagnostic tools. Similar to
SMC-R there are numerous updates to these items:
– Messages (VTAM and TCP stack)
– Netstat (status, monitoring, and display information)
– CS diagnostic tools (VIT, Packet trace, CTRACE, and IPCS formatted dumps)
ISM Functions must be associated with another Channel:
– IQD (a single IQD HiperSockets) channel
– OSD channels
D.3.7 Sample IOCP FUNCTION statements
Example D-2 shows IOCP FUNCTION statements that describe the configuration that defines
ISM adapters shared between LPARs on the same CPC as shown in Figure D-17.
Figure D-17 ISM adapters shared between LPARs
Example D-2 IOCP FUNCTION statements
FUNCTION FID=1017,VCHID=7E1,VF=1,PART=((LP1),(LP1,LP2)),PNETID=(PNET1),TYPE=ISM
FUNCTION FID=1018,VCHID=7E1,VF=2,PART=((LP2),(LP1,LP2)),PNETID=(PNET1),TYPE=ISM
Note: There are no application changes (transparent to Socket applications). There are
no required optional operation changes (for example starting or stopping devices).
Note: A single ISM VCHID cannot be associated with both (IQD and OSD)
IBM z13 and z13s (Driver 27)
z/OS z/OS LP 1 LP 2
DB2
ISM
VCHID=7E1
DRDA
System z vPCI Firmware
Shared Memory Communications
vPCI ISM Virtual Function 2 vPCI ISM Virtual Function 1
Sockets SMC SMC Sockets CICS
Shared Mem Shared Mem
FID 1017
FID 1018