Do the following steps to verify your configuration. The commands can be issued from either ISPF option 6 or the UNIX IShell.
Check the syslog for message EZZ4200I TCP/IP Stack Functions Initialization Complete.
PING 127.0.0.1 to verify the loopback address is working.
PING each address in the 'home' list of your TCPIP.PROFILE configuration file.
PING some other node on each link in your configuration.
PING your domain name servers.
NETSTAT command will provide diagnostic information if your configuration does not appear to be working correctly. See Ch. 11 of the IP User's Guide for more information.