Network Administration

Specifying TCPIP_MACH

For IBM TCP/IP, the socket library must locate a TCP/IP virtual machine under CMS or an address space under OS/390. The name of the virtual machine or the address space may vary from site to site. The SAS/C Compiler uses the TCPIP_MACH environment variable to determine the value of this name. If the TCPIP_MACH variable does not exist, the socket library searches for the name in the TCPIP.DATA file under OS/390 or the TCPIP DATA file under CMS. (See item 2 under gethostbyname and Resolver Configuration for search order.) If this file is not available, the socket library uses a default value of TCPIP to locate the TCP/IP virtual machine or address space.