CSRES_AUTOQ_RESOLVEVIA

Description:

Checks if the RESOLVEVIA statement has been specified with the value TCP in the global TCPIP.DATA file when the autonomic quiescing of unresponsive name servers function is active.

Reason for check:

The default value for the RESOLVEVIA statement is UDP. If the autonomic quiescing of unresponsive name server function is active, the resolver polls unresponsive name servers using UDP, not TCP. If your installation uses TCP, the results of the resolver's polling attempts will not accurately reflect the responsiveness of the name server in your installation.

z/OS® releases the check applies to:

z/OS V1R13 and later.

User override of IBM® values:

The following shows the default keywords for the check, which you can override on either a POLICY statement in the HZSPRMxx parmlib member or on a MODIFY command. This statement may be copied and modified to override the check defaults:

UPDATE
CHECK(IBMCS,CSRES_AUTOQ_RESOLVEVIA)
DATE('date_of_the_change')
REASON('Your reason for making the update.')
ACTIVE
EVERITY(LOW)
INTERVAL(ONETIME)

Debug support:

Verbose support:

Parameters accepted:

Reference:

For more information on AUTOQUIESCE resolver setup statement and RESOLVEVIA on the TCPIP.DATA file, see the AUTOQUIESCE and RESOLVEVIA sections in z/OS Communications Server: IP Configuration Reference.

Messages:

This check issues the following exception messages:

EZBH021E

See z/OS Communications Server: IP Messages Volume 2 (EZB, EZD).

SECLABEL recommended for multilevel security users:

SYSLOW - see z/OS Planning for Multilevel Security and the Common Criteria for information on using SECLABELs.