smc_chk - Verify SMC setups

Red Hat Enterprise Linux 9.2 LPAR mode

Use the smc_chk command to verify that SMC-D or SMC-R connectivity is set up correctly and is operable.

The command runs a connectivity test, and displays errors if the test fails.

smc_chk syntax

Where:

-C or --connect <IP_address>: Obtains diagnostic information about the SMC support of a service that runs at a specified IP address. Use the -p option to specify a port.
-S or --server: Starts a server for manual tests. Use the -p option to specify a port.
-p or --port <port>: Specifies the port to use for tests. When you start a server by using -S, and if the specified port is in use, the next free port is chosen.
-i or --pnetid <interface>: Prints the PNET ID of the specified interface and exits.
-6 or --ipv6: The IP address that is provided is in IPv6 format.
-d or --debug: Shows debug messages.
-v or --version: Displays version information.
-h or --help: Displays a brief smc_chk usage information.

To check whether a z/OS instance with IP address 192.168.37.1 is enabled for SMC using the 3270 console service that is running on port 23:
```
# smc_chk -C 192.168.37.1 -p 23
Test with target IP 192.168.37.1 and port 23
  Live test (SMC-D and SMC-R)
    Success, using SMC-D
```
To print the PNET ID of interface encf5f0:
```
# smc_chk -i encf5f0
PNET5
```
To start a server on port 45901 (or the next available free port):
```
smc_chk -S -p 45901
```