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Diagnosing Connectivity Problems

When you suspect connectivity problems, issue the SVTn LINUX PING command. This command tests TCPIP connectivity and CTC communications on all CTC addresses defined to both the z/OS and Linux servers.

SVT8 X PING SVT8X0100I Command Complete SVT8X2204I StorageServer Response: 914 Owner CTC State Count Writer rc XE72.SVT8 01a00->01a00 1 191567 1 0 Linux 01a00->01a00 1 19809 0 0 XE72.SVT8 01a01->01a01 1 929 0 0 Linux 01a01->01a01 1 229 1 0

The PING command uses TCPIP to create a process on Linux to initiate CTC transactions on each CTC address that is defined to it. z/OS tests its CTC addresses and displays a running usage count. If a nonzero return code displays, see the z/OS parmlib section OpenSystemServer and PipeUnitAddress attributes against the Linux /etc/cacloud/subsystems.conf file. The CTC addresses must be in the same order on both sides.