IBM AS/400E 484

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 theAS/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/IPConﬁguration and Reference V4R4