Setting up for INET

Guideline: Use INET unless you have a special reason to use CINET.

To use the single transport provider support, see the following example of the statements that should be in the BPXPRMxx member of SYS1.PARMLIB.

FILESYSTYPE TYPE(INET) 
            ENTRYPOINT(EZBPFINI) 
NETWORK DOMAINNAME(AF_INET) 
            DOMAINNUMBER(2) 
            MAXSOCKETS(64000)
            TYPE(INET)

Tip: To use the single transport provider support, change the MAXSOCKETS value to 64000.

IBM® Communications Server for z/OS® supports the AF_INET6 address family, which allows socket applications to use the IPv6 APIs. See z/OS Communications Server: IPv6 Network and Application Design Guide for more information about IPv6 APIs.

If you want to use the single transport provider support with both AF_INET and AF_INET6 address families, the following excerpt shows an example of the statements that should be in the BPXPRMxx member.

FILESYSTYPE TYPE(INET) 
            ENTRYPOINT(EZBPFINI)
NETWORK DOMAINNAME(AF_INET) 
            DOMAINNUMBER(2) 
            MAXSOCKETS(64000)
            TYPE(INET) 
NETWORK DOMAINNAME(AF_INET6) 
            DOMAINNUMBER(19) 
            MAXSOCKETS(64000) 
            TYPE(INET)

Tip: You can activate AF_INET6 without recycling z/OS UNIX by adding this NETWORK statement to a running configuration with the SETOMVS RESET=() operator command. Specify a BPXPRMxx member that contains just this one statement. However, the TCP/IP stack would have to be stopped and restarted in order to pick up the new definition. You can specify a separate MAXSOCKETS value for AF_INET6 or default to the value specified for AF_INET. In either case, each family has its own separate maximum.