The z/OS®
IBM zAware log
stream client can receive socket connection "time out" type error
conditions that stem from security settings on the
IBM zAware server
logical partition. Do the following:
- Verify the network configuration of the IBM zAware server
logical partition (for example, one or more of the IP addresses, the
port that makes use of 'ifconfig', 'netstat -an', and so forth).
- Verify that the _BPXK_SETIBMOPT_TRANSPORT environment variable
is not set on the z/OS system.
The 'env' command will show the environment variable setting.
- Verify that routing was set up properly using 'ping', 'ftp' or
'traceroute'. From the IBM zAware server
logical partition, ping the z/OS image
intended as the z/OS IBM zAware log
stream client system. The command 'D TCPIP, {procname},ROUTE' shows
the routing table of the z/OS system.
- If the connection is successful from the IBM zAware server
logical partition to the z/OS IBM zAware monitored
client system, but the reverse direction fails, check the security
setting on the IBM zAware server
logical partition.
Note: - The TCPDUMP tool is useful to determine where the communication
attempt fails. Start the TCPDUMP tool first on the IBM zAware server
logical partition. You might want to specify the '-i' option to filter
out the content: 'tcpdump -i interfacename'.
- Try to connect from the z/OS IBM zAware log
stream client system to the IBM zAware server
logical partition: 'ftp ipaddress portnumber'.
- Check to determine if the SYN packets have arrived for the connection
request and if there areany SYN/ACK response packets. If a SYN/ACK
response packet does not exist, check the security setting on the IBM zAware server
logical partition.