Troubleshoot DHCP

You can view job log and trace data, as well as use troubleshooting lists for common problems.

• Gather detailed DHCP error information
  There are a couple of ways to find out the error details behind the problem that you are encountering.
• Problem: Clients are not receiving an IP address or their configuration information
  Problems might occur if the clients cannot receive an IP address or the configuration information. An IP address is leased to a client through a four-step process between the client and the DHCP server.
• Problem: Duplicate IP address assignments on the same network
  An IP address should be unique across your network. The DHCP server cannot assign a single IP address to more than one client.
• Problem: DNS records are not being updated by DHCP
  The iSeries™ DHCP server is capable of dynamically updating DNS resource records. Dynamic update errors might be caused by the failure of DNS records update.
• Problem: DHCP job log has DNS030B messages with error code 3447
  Error code 3447 means that the DHCP server timed out waiting for a response from the DNS server. This might be due to network or connection problems between the iSeries™ DHCP server and DNS server.