Considerations for the automatic creation of APPC controller descriptions on the LAN

The automatic creation of advanced program-to-program communications (APPC) controller and device descriptions is done in the communications arbiters (QCMNARBxx) jobs. Consider changing these default parameters based on your environment and potential error recovery considerations.

When the APPC controller is automatically configured by default, the system sets these values in the APPC controller description:

Set the ONLINE parameter to *NO.
Set the INLCNN parameter to *DIAL.
Set the DIALINIT parameter to *LINKTYPE.
Set the APPN parameter to *YES.
Set the SWTDSC parameter to *YES.
Set the MINSWTSTS parameter to *VRYONPND.
Set the AUTODLTDEV parameter to 1440.
Note:

The default settings above may not be desirable for your network. If this is the case, consider using a model controller and change these parameter values if you find unnecessary recovery attempts.

When configuring your LAN, use the AUTOCRTCTL parameter on the following commands:

CHGLINDDI
CHGLINETH
CHGLINTRN
CHGLINWLS
CRTLINDDI
CRTLINETH
CRTLINTRN
CRTLINWLS

Note:

The AUTOCRTCTL function finds and varies on existing APPN controller descriptions if a matching one is found. Thus, you can use the AUTOCRTCTL function to eliminate the need to vary on the configuration objects at initial program load (IPL) time. The system varies them on as needed.

See the following references for more detail:

For advanced configuration pages, see the Communications Configuration book.
For more information about iSeries™ communications, see the Communications Management book.
For more information about model controllers see Communication considerations using model controllers.