DFHSO0110 date time applid The TCPIPSERVICE tcpipservice cannot be opened on the IP address ipaddress because the address is unknown to TCP/IP.

Explanation

Opening the TCPIPSERVICE has failed because the IP address specified on the definition is not known to TCP/IP.

This message is issued when the TCP/IP bind call fails with the return value of EADDRNOTAVAIL.

System action

The IP address must be a valid address known to TCP/IP. It must also be an address that the TCP/IP stack supports. IPv6 addresses can only be supported if the stack is dual-mode and therefore supports IPv4 and IPv6 addresses. It is possible to configure multiple TCP/IP stacks for a single OS/390 system, or to have virtual IP addresses on a single stack. If the system only has one IP address then the IP address field of the TCPIPSERVICE definition can be left blank, or specified as ANY. This causes the bind to use the default IP address for the system. To use an alternative, a valid address must be specified.

User response

Check that the address specified on the TCPIPSERVICE definition is known to TCPIP on the system.

If you have specified a low IPv6 address, that is, the address has leading zeros in the first six or more segments, CICS stores and displays the IPv6 address in IPv4 format.

If IPv6 addresses are being used, check that the TCP/IP stack supports IPv6. See the z/OS Communications Server IP Diagnosis Guide on using Netstat to find information about the stack.

Module

DFHSOCK

XMEOUT parameters/Message inserts

  1. date
  2. time
  3. applid
  4. tcpipservice
  5. ipaddress

Destination

CSOO