Verifying UDP and TCP Kernel Parameters

Enterprise Manager Cloud Control 13c Release 4 has specific Operating System requirements for AIX. Ensure that the lower range for TCP/IP and UDP/IP ports is set to at least 11000, to avoid Well Known ports, and to avoid ports that are used by Enterprise Manager Cloud Control 13c Release 4. Set the upper range for TCP/IP and UDP/IP ports to no more than 65000.

Use the following command to check your current range for ephemeral ports.

# /usr/sbin/no -a | fgrep ephemeral
     tcp_ephemeral_low = 11000
     tcp_ephemeral_high = 65000
     udp_ephemeral_low = 11000
     udp_ephemeral_high = 65000

In the preceding example, the TCP and UDP ephemeral ports are set to the required ranges for Enterprise Manager Cloud Control 13c Release 4.

If the output above contains ranges such that the 'low' value is below '11000' or the 'high' range is above 65000, then you need to execute these commands, as the AIX super user.

# /usr/sbin/no -p -o tcp_ephemeral_low=11000 -o tcp_ephemeral_high=65500
# /usr/sbin/no -p -o udp_ephemeral_low=11000 -o udp_ephemeral_high=65500

(Bug 22242359)