(1) .-XCFINIT--=--YES--------. >>-+------------------------+---------------------------------->< '-XCFINIT--=--+-NO-----+-' +-YES----+ '-DEFINE-'
Notes:
- XCFINIT=YES is the default if VTAM® is started as an APPN node (that is, the NODETYPE start option has been specified). XCFINIT=YES is not allowed for pure subarea nodes. XCFINIT=DEFINE is the default if VTAM is started as a pure subarea node (the NODETYPE start option has not been specified).
| dependencies: | z/OS®; applies only to VTAMs defined in a sysplex environment |
Specifies whether XCF connections or XCF definitions for
connections to other VTAMs in a sysplex are to be established at VTAM initialization.
- XCFINIT=NO
- Specifies that this VTAM node will not join an ISTXCF sysplex group at VTAM initialization and will not participate in establishing XCF connectivity (SNA or TCP/IP) with other VTAM nodes in the sysplex.
- XCFINIT=YES
- Specifies that this VTAM node
will join an ISTXCF sysplex group at VTAM initialization.
The name of the group will be ISTXCFvv,
where vv is the 2-character XCF group ID
representing the numeric value specified on the XCFGRPID start option.
If no XCFGRPID start option was specified, the group name will be
ISTXCF. VTAM will create definitions
for XCF connectivity to other VTAM nodes
in the sysplex as this node becomes aware of their presence in the
sysplex group. The node will activate SNA connectivity to these other
nodes immediately. TCP/IP connectivity between these nodes will be
enabled. XCFINIT=YES is valid only for APPN nodes (that is, nodes
that specify the NODETYPE start option). It is the default for APPN
nodes.
Rule: HPR=RTP is required to activate SNA XCF connectivity between VTAM nodes. IF XCFINIT=YES is specified and HPR is not RTP, the value for XCFINIT will be forced to DEFINE.
- XCFINIT=DEFINE
- Specifies that this VTAM node
will join the sysplex group at VTAM initialization.
The name of the group will be ISTXCFvv,
where vv is the 2-character XCF group ID
representing the numeric value specified on the XCFGRPID start option.
If no XCFGRPID start option was specified, the group name will be
ISTXCF. VTAM will create definitions
for XCF connectivity to other VTAM nodes
in the sysplex as this node becomes aware of their presence in the
sysplex group. It will not activate SNA connectivity to these other
nodes immediately. For an APPN node, SNA connectivity can be activated
at a later time by issuing a VARY ACTIVATE command for the XCF SNA
APPN PU. For a pure subarea node, SNA connectivity is not allowed
through XCF. TCP/IP connectivity between these nodes will be enabled.
XCFINIT=DEFINE is the default for pure subarea nodes.
Guideline: Specify this option when you want XCF connectivity for TCP/IP communications within the sysplex but the use of XCF connectivity for APPN communications is not required at VTAM initialization.