HP 9000 Networking XTI Programmer's Guide

18
XTI over OSI Networks
XTI Supported Options
Level ISO_TP (T_CLTS):
Note on option defaults: Options listed as having a default value T_UNSPEC
are determined by the OSI system configuration and negotiation with the
peer transport entity.
The transport class is determined by a combination of the user-specified
options and the OSI configuration. Over a connection-oriented (CONS)
network, if you specify TCO_PREFCLASS = T_CLASS0, class 0 is
negotiated. If you specify TCO_PREFCLASS = T_CLASS2 or
T_CLASS4, the class is determined by the preferred multiplexing class in
the OSI system configuration. It is also possible to force the use of class 0
over CONS through the OSI configuration. Over a connectionless (CLNS)
network, class 4 is always used.
Option Name Absolute
Req’t
Negotiable
States
Default Value
Other Supported
Values
TCO_PROTECTION User Read-Only T_NOPROTECT -
TCO_PRIORITY No
Read-Only
T_PRIDFLT -
TCO_CHECKSUM
Yes
T_IDLE
T_YES T_NO