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3. Look for DNS job logs using the command WRKSPLF QTCP. Look for job logs
that have QTOBDNS listed under user data. Examine the timestamps of the
logs and correct the problems described.
4. Use the command NETSTAT *CNN to verify that there are entries in the local
port list for port 53 or domain.
Remote Remote Local
Opt Address Port Port Idle Time State
----------------------------------------------------
* * domain 019:44:14 Listen
* * domain 019:40:41 *UDP
5. Use the command WRKSVRTBLE to verify there are TCP and UDP domain
service entries listed for port 53.
Opt Service Port Protocol
-----------------------------------------------------
domain 53 tcp
domain 53 udp
6. Verify the AS/400 Host Domain Information is correct. Verify the Host name and
Domain name information are correct. Verify the IP address of your primary
DNS is correct and at the top of the domain name server list. Use Operations
Navigator to display Host Domain Information.
a. Follow the path \Network\Protocols\TCP/IP
b. Select Host Domain Information
Cause List B
1. Verify the specified primary domain exists and that you have enabled it under
Primary Domains on the DNS configuration window.
2. Verify the specified host name exists and is correct in the specified primary
domain.
3. Verify the DNS server knows about the specified host name. If the specified
host name has been recently created be sure to use the Operations Navigator
Update Server function to make changes made to your DNS configuration
known to the DNS server.
4. Look for DNS job logs using the command WRKSPLF QTCP. Look for job logs
that have QTOBDNS listed under user data. Examine the timestamps of the
logs and correct the problems described.
5. Look at the DNS server active job log. Examine the job log entries and correct
any problems.
6. View the Active Server Database using Operations Navigator. Verify the
specified host name appears in the list of information displayed.
7. Verify that your DNS server is actually receiving the given query. See the
General tab listed under DNS Server Properties for information on how to
collect this information.
8. Use the DNS server debug feature to log DNS debug information for use by
service and product development.
Cause List C
1. Verify the specified secondary domain exists under Secondary Domains on the
DNS configuration window.
2. Look for DNS job logs using the command WRKSPLF QTCP. Look for job logs
that have QTOBDNS and QTOBXFER listed under user data. The QTOBXFER
job logs contain information about the transfer of zone information from the
primary server to the secondary server. Examine the timestamps of the logs
and correct the problems described.
484 OS/400 TCP/IP Configuration and Reference V4R4
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