## 6.2.2 Defining the OSA-Express to IO configuration 

You must define the CHPID, CNTLUNIT, and IODEVICE parameters for using OSA-Express. For more information about how to define I/O configuration using HCD, see Chapter 13, “Adding network devices” on page 293. 

## 6.2.3 Confirm your OSA-Express IO definition 

You can confirm your definition by using the following z/OS command: 

DISPLAY M=CHP(xx) 

You can confirm the CHPID path status by using the command that is shown in Figure 6-1. 

D M=CHP(B9) IEE174I 14.25.14 DISPLAY M 744 CHPID B9: TYPE=11, DESC=OSA DIRECT EXPRESS, ONLINE DEVICE STATUS FOR CHANNEL PATH B9 0 1 2 3 4 5 6 7 8 9 A B C D E F 01B9 + + + + + + + + + + + + . . . + SWITCH DEVICE NUMBER = NONE PHYSICAL CHANNEL ID = 016C PNETID 1 = PERFNET ************************ SYMBOL EXPLANATIONS ************************ + ONLINE @ PATH NOT VALIDATED - OFFLINE . DOES NOT EXIST * PHYSICALLY ONLINE $ PATH NOT OPERATIONAL 

Confirm the channel path to a device by using the following command: 

DISPLAY M=DEV(xxxx) 

