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[AIX] How to restart network service in AIX environment?

When network service like telnet connection hangs, then it is possible the inetd subsystem is not working properly.

# refresh -s inetd
0513-095 The request for subsystem refresh was completed successfully.

If the refresh hangs for some time and comes back with 0513-056 time out waiting for command response, then the inetd subsystem may not be working correctly and should then be killed nicely. Run

#ps -ef | grep inetd

and do a kill -15 on the process ID on the line that has /usr/sbin/inetd. Once inetd has been killed, type startsrc -s inetd. If inetd starts, try to telnet into the machine. If inetd does not start up successfully, or if telnet still hangs indefinitely, run kill -15 on the PID of inetd again. Back up the original /etc/inetd.conf file to a new file name by typing:

# mv /etc/inetd.conf /etc/inetd.conf.backup

The original template is in /usr/lpp/bos.net/inst_root/etc/. You can copy it by typing:

# cp /usr/lpp/bos.net/inst_root/etc/inetd.conf /etc/inetd.conf

Run startsrc -s inetd and you should now be able to telnet into the machine
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