A fix is available
APAR status
Closed as new function.
Error description
New Function - Shared Memory Communications-Direct Memory Access Version 2 (SMC-Dv2) Multiple IP Subnet Support
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: * * All users of the IBM Communications Server * * for z/OS Version 2 Release 4: * * Shared Memory Communications-Direct (SMC-D) * **************************************************************** * PROBLEM DESCRIPTION: * * New Function - Shared Memory Communications-Direct Version 2 * * (SMC-Dv2) * * Multiple IP Subnet Support * **************************************************************** * RECOMMENDATION: * * Apply PTF * **************************************************************** This APAR has a dependency on VTAM APAR OA59152 which requires both APARs to be applied concurrently; unexpected results may occur if both APARs are not applied concurrently. If you currently use or plan on using Shared Memory Communications-Direct (SMC-D), you must also install the PTF of z/OS IOS PCIe Services APAR OA59325. Failure to do so will result in activation failures when z/OS Communications Server attempts to start some ISM interfaces. For documentation updates to existing publications consult the following URL: https://www.ibm.com/support/knowledgecenter/SSLTBW_2.4.0/com.ibm .zos.v2r4.halg001/rinsmcv224.htm. SMC-Dv2 is enabled with new IBM Z capability provided by the IBM Z Internal Shared Memory (ISM) function. The new ISMv2 capability is available on IBM z15. For IBM z15 T01, refer to the MCL number P46601.067 driver D41C. The ISMv2 support is in the base of the IBM z15 T02. .
Problem conclusion
If you plan to enable SMC-Dv2 on a host which has connections to a down-level SMC (SMC-Dv1 or SMC-Rv1) system (z/OS CommServer, Linux on Z, and AIX), the down-level host will require the following toleration maintenance applied prior to enabling SMC-Dv2: For z/OS CommServer, the down-level host will need the appropriate PTF for PH17556. For Linux on Z, see Linux on Z webpage https://linux-on-z.blogspot.com/p/smc-for-linux-on-ibm-z.html for information related to toleration requirements. For AIX, see AIX webpage, https://www.ibm.com/support/knowledgecenter/en/ssw_aix_72/rdma/s mc_r.html , for information related to toleration requirements. NOTE: Failure to apply the proper toleration maintenance may result in connection hangs or failures when SMC-Dv2 is enabled on z/OS.
Temporary fix
Comments
APAR Information
APAR number
PH22695
Reported component name
TCP/IP MVS
Reported component ID
5655HAL00
Reported release
240
Status
CLOSED UR1
PE
NoPE
HIPER
NoHIPER
Special Attention
YesSpecatt / New Function / Xsystem
Submitted date
2020-02-26
Closed date
2020-08-19
Last modified date
2022-04-21
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI71143 UI71144
Modules/Macros
EZACFMS1 EZACDTNE EZBIEPRO EZACDPRG EZAFTPGU EZBIFGIT EZBNMRHC EZBIPSTR EZACFYAC EZBIFIND EZACDDNE EZBIPEPR EZACDNMS EZBITTRM EZBSLUT2 EZASAIOC EZBTCICT EZARRSTC EZBTIINI EZASMF77 EZBITTUB EZBNMFTP EZAIKSMF EZBTTCVB EZBTIGBL EZBNMRHA EZASAIO2 EZBDGCTR EZBIFIUM EZBTCUTL EZBIEITF EZBDGPRF EZBPTDAT EZACDSTR EZBIFIUT EZACFPPT EZBITMST EZACFPPR EZACFPTV EZBDGSTO EZBIFGID EZBSLINB EZBITINI EZACDHLP EZBSCUTL EZACDONE EZBPTSMC EZBNMGIF EZACFPAR EZBTCSYN EZACFLEX EZACFALG EZASMF EZACFPAL EZACFPIT EZACFPVA EZBNMGDL EZBSMDLS EZBTCFCN EZACFATM EZBIETI EZBCTFME EZAMLCON EZBIEACC EZBTCPCN EZACFPR2 EZACFPV6 EZBIFSTC EZBSLOUT EZBIPSUB EZACFMMN EZBNMMPA EZACFGIO EZACFMUT EZBNMMPC EZBTCRD EZACFPSE EZASNAA3 EZBTMPRS EZACDNE6 EZACFPSC EZACDNE1 EZBDGTCP EZBSLUTL EZACDNE0 EZACDNE2 EZBIFIOC EZACFSM1 EZACDNM6 EZBNMGTC EZBTCIC2 EZBTSCON EZBIETCP
Fix information
Fixed component name
TCP/IP MVS
Fixed component ID
5655HAL00
Applicable component levels
R240 PSY UI71143
UP20/09/04 P F009
Fix is available
Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.
[{"Line of Business":{"code":"LOB35","label":"Mainframe SW"},"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSSN3L","label":"z\/OS Communications Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"240"}]
Document Information
Modified date:
22 April 2022