HP-UX SNAplus2 NOF Programmer's Guide

NOF API Verbs (ACTIVATE_SESSION to OPEN_FILE)
DEFINE_PORT
Chapter 3366
AP_PORT_ACTIVE
The specified port cannot be modified
because it is currently active.
AP_DUPLICATE_PORT_NUMBER
A port with the specified
port_number has already been
defined.
Appendix A, “Common Return Codes,” lists further secondary return
codes associated with AP_STATE_CHECK, which are common to all NOF
verbs.
Returned Parameters: Other Conditions
Appendix A, “Common Return Codes,” lists further combinations of
primary and secondary return codes that are common to all NOF verbs.
Incoming Calls
If you are configuring a port that will accept incoming calls (as defined by
the tot_link_act_lim , inb_link_act_lim , and out_link_act_lim
parameters), there is generally no need to define an LS to be used for
these calls, because SNAplus2 will define one dynamically when the
incoming call is received. However, if the incoming calls are from a host
computer that supports dependent LUs or from a downstream computer
using PU concentration, you need to define an LS explicitly, because the
LS definition includes the name of the PU associated with the dependent
LUs.
When an incoming call arrives at the port, SNAplus2 checks the address
specified on the call against the addresses specified for LSs defined on
the port (if any), to determine if an LS has already been defined for the
call. If the address does not match, an LS is defined dynamically. To
ensure that the explicit LS definition (including the required PU name)
is used, ensure that the address defined for this LS matches the address
that will be supplied by the host or the downstream computer on the
incoming call. For Token Ring / Ethernet / FDDI, both the MAC and SAP
addresses must match in order to select the correct LS.