Read this document carefully before installing and using Entire Net-Work TCP/IP Option version 6.3. It covers the following topics:
For complete information about the installation media for Entire Net-Work 6.4 and about new and changed features for Entire Net-Work 6.4, read Entire Net-Work 6.4 Release Information.
The following enhancements have been made to this release of Entire Net-Work TCP/IP Option.
TCPX DRIVER Connection and Disconnection Message Suppression
New and Changed TCP/IP Line Driver (TCPI) DRIVER and LINK Parameters
New and Changed Simple Connection Line Driver (TCPX) DRIVER and LINK Parameters
Entire Net-Work 6.3 SP2 introduces support for the IBM socket option TCP_NODELAY. TCP_NODELAY indicates whether data sent over the socket is subject to the Nagle algorithm (RFC 896). For more information, refer to your IBM documentation.
Entire Net-Work 6.3 SP2 provides new TCPI and TCPX DRIVER and LINK parameters, called NODELAY, used to indicate whether the IBM socket option TCP_NODELAY is enabled or disabled for a link.
For more information about TCPI DRIVER and LINK statement parameters, read TCP/IP DRIVER Statement and TCP/IP LINK Statement. For more information about TCPX DRIVER and LINK statement parameters, read TCPX DRIVER Statement and TCPX LINK Statement.
Entire Net-Work 6.3 SP1 introduces support for IPv6 communications via the Entire Net-Work TCP/IP and Simple Connection line drivers.
A new ALLOWIP6 parameter has been added to both the TCPI and TCPX DRIVER statements. This parameter allows you to specify whether the line driver will accept connections using IPv6 communication. For more information about TCPI DRIVER statement parameters, read TCP/IP DRIVER Statement. For more information about TCPX DRIVER statement parameters, read TCPX DRIVER Statement.
A new V6IPADDR parameter has been added to both the TCPI and TCPX LINK statements. This parameter allows you to specify the IPv6 address of the remote host associated with the line driver link. For more information about TCPI LINK statement parameters, read TCP/IP LINK Statement. For more information about TCPX LINK statement parameters, read TCPX LINK Statement.
Entire Net-Work 6.3 SP1 includes enhancements to the Simple Connection Line Driver (TCPX) so it now allows e-business connections between classic mainframe applications and non-mainframe databases served by Entire Net-Work 7 in open systems environments. This was previously only possible using classic TCP/IP line driver (TCPI) connections to Entire Net-Work 7.
Note:
Mainframe-to-mainframe connections are not allowed via the
Simple Connection Line Driver (TCPX).
For more information, read Simple Connection Line Driver Overview.
If you apply zap WT632005 to your Entire Net-Work TCP/IP Option 6.3 SP2 installation, you can now suppress the NETP818I and NETP819I connection and disconnection messages from your log, eliminating clutter in the log file.This is accomplished by a new TCPX DRIVER parameter provided in the zap: SUPMSGS.
For more information, read SUPMSGS Parameter.
Effective with version 6.3 SP2, zEnterprise Data Compression (zEDC) is supported on z/OS systems. This support comes in the form of two new LINK parameters for the TCPI line driver: ZEDC and ZEDCLOG. The ZEDC parameter indicates whether zEDC compression can occur for the link; the ZEDCLOG parameter identifies the level of trace data that should be logged for zEDC compression processing. For more information, read TCP/IP LINK Statement.
The following table summarizes the new TCP/IP Line Driver (TCPI) DRIVER and LINK parameters introduced in Entire Net-Work 6.3:
| Parameter | DRIVER or LINK Statement? | New or Changed? | Description | Introduced in Release |
|---|---|---|---|---|
| ALLOWIP6 | DRIVER | New | This new parameter can be used to indicate whether the TCPI line driver will accept connections using IPv6 communication. | 6.3 SP1 |
| API | DRIVER | Changed | A new value option EZA has been added for the TCPI DRIVER parameter API. This parameter value loads the z/VSE interface NWTCPEZA. This value can be used only with the TCP/IP stack from Barnard Software, Inc. | 6.3 SP1 |
| NODELAY | Both | New | This new parameter can be used to indicate whether the IBM socket option TCP_NODELAY is enabled or disabled for a link. | 6.3 SP2 |
| V61IPADDR | LINK | New | This new parameter can be used to specify the IPv6 address of the remote host associated with the TCPI link. | 6.3 SP1 |
| ZEDC | LINK | New | This new parameter indicates whether zEnterprise Data Compression (zEDC) compression can occur for the link. | 6.3 SP2 |
| ZEDCLOG | LINK | New | This new parameter indicates what level of trace data will be logged for zEDC compression processing. | 6.3 SP2 |
For more information about TCPI DRIVER statement parameters, read TCP/IP DRIVER Statement. For more information about TCPI LINK statement parameters, read TCP/IP LINK Statement.
The following table summarizes the new Simple Connection Line Driver (TCPX) DRIVER and LINK parameters introduced in Entire Net-Work 6.3:
| Parameter | DRIVER or LINK Statement? | New or Changed? | Description | Introduced in Release |
|---|---|---|---|---|
| ACQUIRE | LINK | New | This parameter is already in use for the TCPI line driver. It was added to the TCPX line driver in this release. It can be used to specify whether or not a connection with the remote node should be attempted when the driver is opened for the first time (during system initialization). | 6.3 SP1 |
| ALLOWIP6 | DRIVER | New | This new parameter can be used to indicate whether the TCPX line driver will accept connections using IPv6 communication. | 6.3 SP1 |
| API | DRIVER | Changed | A new value option EZA has been added for the TCPX DRIVER parameter API. This parameter value loads the z/VSE interface NWTCPEZA. This value can be used only with the TCP/IP stack from Barnard Software, Inc. | 6.3 SP1 |
| RESTART | LINK | New | This parameter is already in use for the TCPI line driver. It was added to the TCPX line driver in this release. It can be used to specify the retry interval in seconds and the number of retries that are made to start the connection to the remote node. | 6.3 SP1 |
| NODELAY | Both | New | This new parameter can be used to indicate whether the IBM socket option TCP_NODELAY is enabled or disabled for a link. | 6.3 SP2 |
| SUPMSGS | DRIVER | New | This new parameter allows you to suppress the NETP818I and NETP819I connection and disconnection messages from your log, eliminating clutter in the log file. | 6.3 SP2 (via zap WT632005) |
| V61IPADDR | LINK | New | This new parameter can be used to specify the IPv6 address of the remote host associated with the TCPX link. | 6.3 SP1 |
| WEIGHT | LINK | New | This parameter is already in use for the TCPI line driver. It was added to the TCPX line driver in this release. It can be used to specify the weight of this link with respect to other links going to the same node. | 6.3 SP1 |
For more information about TCPX DRIVER statement parameters, read TCPX DRIVER Statement. For more information about TCPX LINK statement parameters, read TCPX LINK Statement.
With Entire Net-Work 6.3 SP1, the CONNECT operator command has been added to the Simple Connection Line Driver (TCPX) LINK commands. This command mirrors the CONNECT LINK operator command used by the TCP/IP line driver.
For more information, read Simple Connection Line Driver Operator Commands.
The TCP/IP line driver supports connections with TCP/IP line drivers from all prior versions of Entire Net-Work.
The Simple Connection Line Driver supports the same connections that were supported in all prior versions of Entire Net-Work.
Entire Net-Work 6.3 supports the following levels of TCP/IP transport providers:
| Platform | TCP/IP Protocol Supported |
|---|---|
| z/OS |
IBM TCP/IP for z/OS Version 1.10, 1.11, and 1.12. |
| z/VSE |
IBM and Connectivity Systems TCP/IP z/VSE Version 4.2 and 4.3. |
| BS2000/OSD Sockets Subsystem |
Sockets Version 2.0 and above. For Sockets 2.2 and above, the SOC6 subsystem will be used, otherwise the SOCKETS subsystem is used. When accessing via IPV6 addressing, a SOC6 subsystem with Sockets 2.5 is the minimum requirement. |