.-MIH--=--NO------. >>-+-----------------+----------------------------------------->< | .-NO--. | '-MIH--=--+-----+-' '-YES-'
| statements: | GROUP,LINE |
| dependencies: | LNCTL=CTCA |
Causes the link to become inoperative
if a start I/O timeout occurs because the receiving host is in disabled
compatibility mode. MIH stands for missing-interrupt handler. The
default time value associated with this operand is 3 minutes, although
you can change the default with the MIHTMOUT start option.
- MIH=NO
- The MIH default of NO means that VTAM® does not deactivate the link if REPLYTO plus MIHTMOUT time units expire without receipt of an interrupt.
- MIH=YES
- If MIH=YES is coded on a CTCA LINE statement (or sifts down to it from the GROUP statement), VTAM deactivates the link if the following time elapses after START I/O is issued from the link: REPLYTO (from the GROUP statement, default 3 seconds) plus MIHTMOUT (start option, default 3 minutes), and no interrupt has yet been received.
Note: If you do not code MIH, a link can appear active but
is most likely hung or unusable. Therefore, coding MIH=YES is recommended.