TCPTYPE parameter

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Revision as of 00:18, 14 September 2016 by JAL (talk | contribs) (update Description for 7.7 and IPV6; put values in table)
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Type of TCP/IP server address space

Summary

Default value
UNKNOWN
Parameter type
System
Where set
User 0 CCAIN parameters
Related products
All
Introduced
Before Sirius Mods 6.7

Description

This parameter specifies the type of TCP/IP network to which Model 204 is connected. Generally, you can leave this parameter at its default value and let Janus automatically detect the type of TCP/IP you have on your machine.

If you specify type IBM or IBMV6, Janus detects and sets the type of IBM interface it will use, as shown in the table below.

You can also override auto-detection by explicitly supplying a TCPTYPE parameter value. The only reason to do this would be if you have multiple TCP/IP stacks installed and you want to force use of the non-preferred stack.

The valid TCPTYPE values are in the third column below:

Operating systemNetwork versionValueMeaning
z/OS IPV4 only IBM Auto-detect the "best" IBM TCP/IP interface. For z/OS, this is BPX. For CMS, this is IUCV.
BPX IBM BPX (Unix System Services).
HPNS IBM HPNS (High Performance Native Sockets). Note that despite its name, HPNS's performance is not nearly as good as BPX's.
INTERLNK InterLink TCP/IP.
IUCV IBM TCP/IP IUCV (Inter User Communication Vehicle).
IPV6 only IBMV6 Auto-detect the "best" IBM TCP/IP interface. For z/OS, this is BPXV6. For CMS, this is IUCVV6.

This option is available as of version 7.7 of Model 204.

BPXV6 IBM BPX (Unix System Services).

This option is available as of version 7.7 of Model 204.

CMS IPV4 only IUCV IBM TCP/IP IUCV (Inter User Communication Vehicle).
IPV6 only IUCVV6 IBM TCP/IP IUCV (Inter User Communication Vehicle).

This option is available as of version 7.7 of Model 204.

z/VSE IPV4 only CSI Connectivity Systems TCP/IP.

Most of the communication with the TCP/IP address space is accomplished with a Pseudo subtask (PST). Because of this, you may need to increase the NSUBTKS parameter by 1 before using Janus.