How to reset an I/O processor while the system is running

This topic provides information about how to reset an I/O processor while the system is running.

About this task

Resetting an IOP restarts and reloads that IOP. Use this procedure to recover from an intermittent error condition.

Note: You can also perform an IOP reset under the hardware service manager function (see Debug the resource).

Note: You cannot reset the workstation IOP for the workstation at which you are working or a workstation that is the only one on the system

Do you want to reset the local workstation IOP?
- No: Continue with the next step.
- Yes: Vary off the local workstation IOP (see Varying configuration descriptions on and off). Then, go to step 6 of this procedure.
Do you want to reset the communications IOP?
- No: Continue with the next step.
- Yes: Vary off all the lines on a communications IOP (see Varying configuration descriptions on and off). Then, go to step 6 of this procedure.
Do you want to reset the cryptographic IOP?
- No: Continue with the next step.
- Yes: You must end cryptographic services. Enter ENDCS (End Cryptographic Services) command. To reset the cryptographic IOP, enter STRCS Press F4 to prompt parameters. Then, enter RESET *YES. This ends the procedure.
Do you want to reset a tape, optical, or disk IOP without an attached disk unit?
- Yes: Continue with the next step.
- No: This ends the procedure.
Vary off all the IOPs and device descriptions on the IOP (see Varying configuration descriptions on and off).
Enter the VRYCFG (Vary Configuration) command. Then, press F4 for prompting.
Enter STATUS *ON RESET *YES Then, press Enter. This ends the procedure.