The resulting log should have an answer section, which displays the IP address of your Open Directory master server. If there is no answer section, or if the IP address is incorrect, perform further analysis on your DNS service.
3In the Lookup pane of Network Utility, enter the IP address of your Open Directory master server and click Lookup.
The resulting log should displays the domain name of your Open Directory master server. If the domain name is incorrect, perform further analysis on your DNS service.
Note: Instead of using Network Utility, you can use the dig tool in Terminal. Enter the following command in Terminal:
dig name_or_address
Replace name_or_address with the domain name or the IP address of your Open Directory master server. The resulting log should have an answer section with the correct IP address or domain name.
Testing Your DHCP Service
Your DHCP service should be configured to supply enough IP addresses to serve your network. If a computer does not have a valid IP address, it can’t be contacted through your network. For a detailed description of DHCP and for instructions on configuring DHCP, see Network Services Administration.
If you have Apple Remote Desktop installed, you can quickly test your entire network. In Apple Remote Desktop, create a scanner that displays computers with IP addresses in the range distributed by your DHCP server. If a computer is turned on, is not in sleep mode, and is connected to your network, the computer should be in the scanner.
The scanner displays the IP address given to the computer, and the computer’s host name. Computers that are not assigned host names by the DNS service are listed without host names. If a computer is listed and has an appropriate IP address and host name, the computer is receiving DHCP and DNS service.
For more information about how to use scanners in Apple Remote Desktop, see the Apple Remote Desktop Administrator’s Guide.
If you do not have Apple Remote Desktop installed, you can perform the following task to test a single computer’s ability to receive DHCP service.
To test your network’s DHCP service on a single computer:
1In Server Admin, click the disclosure triangle to the left of the server providing DHCP service.
This displays all of the server’s services.
2Select DHCP and click Subnets.
The Subnets pane lists the addresses your DHCP server supplies.
Chapter 11 Solving Problems
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