Table 1 lists the new and updated Communications Server PROFILE.TCPIP configuration statements and parameters. See z/OS V2R1.0 Communications Server: IP Configuration Reference for more detailed information.
| Statement | Release | Description | Reason for change |
|---|---|---|---|
 ATMARPSV, ATMLIS, ATMPVC |
V2R1 |
Because support for the ATM device type
will be dropped in a future release, these profile statements
will no longer be supported then. |
IBM Health Checker for legacy device types |
| AUTOLOG | V2R1 | Message EZZ0621I or EZZ0622I will be issued on the first cancel of an autologged procedure. | Release update |
| DEFADDRTABLE | V1R12 | New profile statement used to configure the default address selection policy table. | Configurable default address selection policy table |
DELETE PORT |
V2R1 | For TCP ports, if no reservation is found for the port or the reservation was deleted in the current profile processing, error message EZZ0328I is issued instead of message EZZ0395I. Message EZZ0395I will continue to be issued for other errors. Update your message automation for this change. | Release update |
| DEVICE and LINK |
V2R1 |
Support for the DEVICE and
LINK profile statements for the following TCP/IP legacy device
types will be dropped in a future release:
|
IBM Health Checker for legacy device types |
| GATEWAY | V2R1 | Support for this profile statement will be dropped in a future release. Use the BEGINROUTES/ENDROUTES configuration block to replace your GATEWAY statements. To assist in converting your GATEWAY statements to BEGINROUTES statements, you can take a dump of the TCP/IP stack address space and use the CONVERT parameter on the IPCS TCPIPCS PROFILE subcommand. The TCPIPCS command output will contain the information that is specified on the GATEWAY statements converted to the equivalent BEGINROUTES/ENDROUTES statements. See "TCPIPCS PROFILE" in the IP Diagnosis Guide for more information. | IBM Health Checker for z/OS GATEWAY statement check |
| GLOBALCONFIG | V2R1 | The SMCR parameter is defined to enable and configure Shared Memory Communications over Remote Direct Memory Access (SMC-R) function. The SMCR parameter includes the PFID, PORTNUM, MTU, FIXEDMEMORY, and TCPKEEPMININTERVAL sub-parameters. The NOSMCR parameter is defined to disable SMC-R function. | Shared Memory Communications over Remote Direct Memory Access |
| V1R13 | Deprecated the SEGMENTATIONOFFLOAD and NOSEGMENTATIONOFFLOAD parameters. | OSA-Express4S QDIO IPv6 checksum and segmentation offload | |
| V1R13 | Added the AUTOIQDX and NOAUTOIQDX parameters. The AUTOIQDX parameter includes the ALLTRAFFIC and NOLARGEDATA sub-parameters. | HiperSockets optimization for intraensemble data networks | |
| V1R12 | A new NOJOIN subparameter is added on the SYSPLEXMONITOR parameter. If NOJOIN is configured in the initial profile, the TCP/IP stack does not join the sysplex group when the stack is started. | Control joining the sysplex XCF group | |
| INTERFACE | V2R1 | Can be used to configure IPv4 HiperSockets interfaces (IPAQIDIO) instead of the DEVICE, LINK, and HOME statements. | IPv4 INTERFACE statement for HiperSockets and Static VIPAs |
| V2R1 | Can be used to configure IPv4 static VIPA interfaces (VIRTUAL) instead of the DEVICE, LINK, and HOME statements. | IPv4 INTERFACE statement for HiperSockets and Static VIPAs | |
| V2R1 | For IPAQENET interface types, added new TEMPIP parameter to allow an interface to activate without an IP address assigned. Applications which implement DHCP client support can communicate over the interface to obtain an IP address. | Enable DHCP clients on OSA Interfaces | |
| V2R1 | The SMCR parameter is defined to enable Shared Memory Communications - RDMA (SMC-R) function for IPAQENET and IPAQENET6 statements. The SMCR parameter is valid only for CHPIDTYPE OSD definitions. The NOSMCR parameter is defined to disable SMC-R function. | Shared Memory Communications over Remote Direct Memory Access | |
| V1R12 | For IPAQENET and IPAQENET6 interface types, added new WORKLOADQ and NOWORKLOADQ subparameters to the INBPERF parameter value DYNAMIC to enable or disable the QDIO inbound workload queueing function. | Performance improvements for sysplex distributor connection routing | |
| V1R12 | For IPAQENET and IPAQENET6 interface types, added CHPIDTYPE and CHPID parameters to define interfaces onto the intraensemble data network. | z/OS Communications Server in an ensemble | |
| IPCONFIG | V2R1 | You can enable QDIOACCELERATOR when IPSECURITY is enabled. | QDIO acceleration coexistence with IP filtering |
| V2R1 | The SOURCEVIPAINTERFACE parameter is added for IPv4 DYNAMICXCF interfaces. | IPv4 INTERFACE statement for HiperSockets and Static VIPAs | |
| V1R13 | Added CHECKSUMOFFLOAD and NOCHECKSUMOFFLOAD and SEGMENTATIONOFFLOAD and NOSEGMENTATIONOFFLOAD parameters. | OSA-Express4S QDIO IPv6 checksum and segmentation offload | |
| IPCONFIG6 | V1R13 | Added CHECKSUMOFFLOAD and NOCHECKSUMOFFLOAD and SEGMENTATIONOFFLOAD and NOSEGMENTATIONOFFLOAD parameters. | OSA-Express4S QDIO IPv6 checksum and segmentation offload |
| IPCONFIG6 (continued) | V1R13 | If you do not specify the IGNOREREDIRECT parameter and you are using Intrusion Detection Services (IDS) policy to detect and discard Redirect packets, ICMPv6 Redirect packets are discarded while the policy is active. | Expanded Intrusion Detection Services |
| V1R12 | Added OSMSECCLASS parameter to define a security class for IP filtering for OSM interfaces. | z/OS Communications Server in an ensemble | |
| IPSEC | V2R1 | The DVIPSEC parameter enables the support for Sysplex-Wide Security Associations (SWSA) for IPv6 on a stack that also has the IPSECURITY parameter specified on the IPCONFIG6 statement. | Sysplex-Wide Security Associations for IPv6 |
| NETACCESS | V2R1 | The CACHEALL, CACHEPERMIT, and CACHESAME parameters are added to control the level of caching that is used for the results of network access control checks. | Improve auditing of NetAccess rules |
| NETMONITOR | V2R1 | The PROFILE and NOPROFILE subparameters control the creation of both the TCP/IP stack SMF 119 profile record (subtype 4) and the new TN3270E Telnet server SMF 119 profile record (subtype 24). | NMI and SMF enhancements for TCP/IP applications |
| V1R12 | New CSMAIL, NOCSMAIL, CSSMTP and NOCSSMTP subparameters added for the SMFSERVICE parameter to enable applications to receive the new SMF 119 subtype 48, 49, 50, 51, and 52 records for CSSMTP events. | Management data for CSSMTP | |
| V1R12 | New DVIPA and NODVIPA subparameters added for the SMFSERVICE parameter to enable applications to receive the new SMF 119 records (subtypes 32 - 37) for DVIPA events. | SMF event records for sysplex events | |
| PORT | V2R1 | The NOSMCR parameter is defined to disable SMC-R function for the specified port. | Shared Memory Communications over Remote Direct Memory Access |
| PORTRANGE | V2R1 | The NOSMCR parameter is defined to disable SMC-R function for the specified port range. | Shared Memory Communications over Remote Direct Memory Access |
| V1R13 | The jobname parameter can now include a 1-7 character prefix followed by a wildcard character (*), enabling all job names that match the prefix to access the ports in the range. | Wildcard support for the PORTRANGE statement | |
| SMFCONFIG | V2R1 | The SMCRGROUPSTATISTICS and the NOSMCRGROUPSTATISTICS parameters are defined to create SMF 119 subtype 41 interval records for SMC-R link group and link statistics. | Shared Memory Communications over Remote Direct Memory Access |
| V2R1 | The SMCRLINKEVENT and the NOSMCRLINKEVENT parameters are defined to create SMF 119 subtype 42 and subtype 43 event records for SMC-R link start and end events. | Shared Memory Communications over Remote Direct Memory Access | |
| V2R1 | The IFSTATISTICS and the NOIFSTATISTICS parameters is updated to control the creation of the SMF 119 subtype 44 interval records for IBM 10GbE RoCE Express interface statistics. | Shared Memory Communications over Remote Direct Memory Access | |
| V1R12 | New DVIPA and NODVIPA parameters added to create new SMF 119 records (subtypes 32 - 37) for DVIPA events. | SMF event records for sysplex events | |
| SOMAXCONN | V2R1 | Default changed from 10 to 1024. | Enhanced TCP protocol configuration options and default settings |
| SRCIP | V1R12 | The source for a JOBNAME entry can be configured as PUBLICADDRS to control the use of IPv6 public addresses. | Configurable default address selection policy table |
| TCPCONFIG |
V2R1 |
The PFID operand on the SMCR statement is
changed to accept a range of values between X'0000' and X'0FFF'. |
Shared Memory Communications over RDMA adapter
(RoCE) virtualization |
| V2R1 | Added the following new parameters:
|
Enhanced TCP protocol configuration options and default settings | |
| V2R1 | SELECTIVEACK and NOSELECTIVEACK parameters are added. | TCP support for selective acknowledgements | |
| V2R1 | The EPHEMERALPORTS parameter is added. | User control of Ephmeral Port Ranges | |
| UDPCONFIG | V2R1 | The EPHEMERALPORTS parameter is added. | User control of Ephmeral Port Ranges |
| VIPABACKUP | V1R12 | A new prefix length value is added that can be specified with an IPv6 address to enable the definition of an IPv6 subnet. | Extend sysplex distributor support for DataPower for IPv6 |
| VIPADEFINE | V1R12 | A new prefix length value is added that can be specified with an IPv6 address to enable the definition of an IPv6 subnet. | Extend sysplex distributor support for DataPower for IPv6 |
| VIPADISTRIBUTE | V1R12 | The following new keywords are added to
support the new HotStandby distribution method:
|
Sysplex distributor support for hot-standby server |
| V1R12 | A new keyword ENCAP is added to support distribution to non-z/OS IPv6 targets. | Extend sysplex distributor support for DataPower for IPv6 | |
| VIPARANGE | V1R13 | A new SAF parameter and its associated resname value are supported. You can use the SAF
parameter to restrict the creation of a dynamic VIPA in the specified
VIPARANGE subnet to permitted applications. The maximum number of VIPARANGE statements for one stack is now 1024; prior to V1R13, the maximum number was 256. |
Improved security granularity for VIPARANGE DVIPAs |