DHCP Server Management

The DHCP Server Management role consists of the following tasks:

• Creating a DHCP Server
• Viewing or Modifying a DHCP Server
• Deleting a DHCP Server
• Starting or Stopping a DHCP Server
• Configuring DHCP Auditing
• Viewing or Saving the DHCP Audit Trail Log
• Viewing or Saving the DHCP Event Log
• Loading the DHCP Server

Creating a DHCP Server

You use the DNS/DHCP Management Utility to create and set up a DHCP Server object. A DHCP Server object can be created or located under any of the following objects:

• Organization (O)
• Organization Unit (OU)
• Country (C)
• Locality (L)

To create and set up a DHCP server object, complete the following steps:

1. Click DHCP Management > DHCP Server Management to open the DHCP Server Management window in the main panel.

2. Select Create Server from the drop-down menu and click OK to open the Create DHCP Server window.

3. Enter the name of the server or browse to select it.

4. Click Create.

   A message indicates that the new DHCP Server Object has been created.

Viewing or Modifying a DHCP Server

1. Click DHCP Management > DHCP Server Management to open the DHCP Server Management window in the main panel.

2. Select View/Modify Server from the drop-down menu and click OK to open the View/Modify DHCP Server window.

3. Select the DHCP Server object from the drop-down menu.

4. Click OK.

   You are led through a set of steps by which you can modify the following parameters:

   • Subnet Address Range Serviced by the Server: This displays information about the range of addresses that can be dynamically assigned by the server.
   • Subnet Serviced by the Server: This displays information about the subnet to which the server can assign addresses.
   • Comments: You can type comments about the DHCP server in this box. This is an optional parameter.
   • Set SNMP Traps Option: SNMP traps control DHCP server event trapping. Choose from the following options:

     - None: Turns off SNMP traps

     - Major Events: Traps only critical events (default)

     - All: Traps both major and minor events

     Management applications such as Novell ManageWise^® software help you monitor traps.

   • Audit Trail and Alerts Option: Auditing allows you to analyze historical data and diagnose operational difficulties. Choose from the following options:

     - None: Disables auditing

     - Major Events: Audits only major events such as SNMP traps (default)

     - All: Audits all events

   • Enable Audit Trail Log: Check this to log audit trails and events.
   • Mobile User Option: The DHCP server can be configured to support mobile users such as laptop users. Choose from the following options:

     - No Mobile Users Allowed: Disables support for mobile users

     - Allow Mobile Users but Delete Previously Assigned Address: Deletes previously assigned addresses while granting an address to a mobile user (default)

     - Allow Mobile Users but Do Not Delete Previously Assigned Address: Caches previously assigned addresses while granting an address to a mobile user

   • Ping Address: Check this to ping an address to ensure that the address is not in use before it is assigned. Note that enabling ping increases traffic on the network.

Deleting a DHCP Server

1. Click DHCP Management > DHCP Server Management to open the DHCP Server Management window in the main panel.

2. Select Delete Server from the drop-down menu and click OK to open the Delete DHCP Server window.

   • To remove all the DHCP servers in the list, check the top-level check box and click Delete.
   • To remove one or more DHCP servers, check the check box next to it and click Delete.

Starting or Stopping a DHCP Server

1. Click DHCP Management > DHCP Server Management to open the DHCP Server Management window in the main panel.

2. Select Start/Stop Server from the drop-down menu and click OK to open the DHCP Server Start/Stop Services window.

3. Select the server from the Select DHCP Server drop-down menu.

4. Click OK.

5. Depending on the state of the DHCP Server module, any one of the following will now appear:

   • Failure notification message: This appears if the DHCP Server module (DHCPSRVR.NLM) is not loaded. In order to start the server, load the DHCP Server module through the system console.
   • Start button: If the DHCP Server module is loaded but is in STOP mode, click to start the DHCP server.
   • Stop button: If the DHCP Server module is loaded but is in START mode, click to stop the DHCP server.

   NOTE:  To use the Start/Stop DHCP service, DHCPSRVR.NLM must be loaded.

Configuring DHCP Auditing

To configure a DHCP server for auditing, use the Audit Trail and Alerts Option:

1. Click DHCP Management > DHCPServer Management > View/Modify Server.

2. Select the DHCP server and click OK > Next

3. Check the Enable Audit Trail Log check box and click OK.

Viewing or Saving the DHCP Audit Trail Log

1. Click DHCP Management > DHCP Server Management to open the DHCP Server Management window in the main panel.

2. Select Audit Trail Log from the drop-down menu and click OK to open the DHCP Server Audit Trail Log window.

3. Select the server from the Select DNS Server drop-down menu.

4. If you want to filter the Audit Period, modify the Starting Date and Ending Date in the appropriate fields.

   The following date format is accepted:

   mm-dd-yyyy

5. Click OK.

   This opens the DHCP Audit Trail Log table that lists the following data:

   • Entry Time
   • IP Address
   • Type
   • Status
   • Host name
   • Hardware Address
   • Client ID
   • Lease Type

6. To define a view filter on the DHCPAudit Trail Log, click the Display Options button.

   You can now filter events on the following parameters:

   • Start Date: to set a start date for monitoring the DHCP audit trail.
   • End Date: to set an end date for monitoring the DHCP audit trail.
   • Transaction Type: manual, dynamic, automatic, exclusion, unauthorized or IPCP, and Fix Host Dynamic.

7. Click Next on the DHCP Audit Trail Log window.

8. Click Download File > Save the Audit Trail Log file on your local machine.

Viewing or Saving the DHCP Event Log

1. Click DHCP Management > DHCP Server Management to open the DHCP Server Management window in the main panel.

2. Select Event Log from the drop-down menu and click OK to open the DHCP Event Log window.

3. Select the server from the Select DHCP Server drop-down menu.

4. If you want to filter the Audit Period, modify the Starting Date and Ending Date in the appropriate fields.

   The following date format is accepted:

   mm-dd-yyyy

5. Click OK.

   This opens the DHCP Event Log table that lists the following data:

   • Entry Time: Date and Time the event occurred.
   • Severity: Severity of the event (critical, major, warning and informational).
   • State: State of the server (operational, degraded, and inoperative).
   • Description: Description of the event that occurred.

6. To define a view filter on the DHCP Events Log, click the Display Options button.

   You can now filter events on the following parameters:

   • Start Date: to set a start date for monitoring the DHCP Event Log.
   • End Date: to set an end date for monitoring the DHCP Event Log.
   • Severity defines the severity level of the event: critical, major, warning, and informational.
   • State settings define the condition of events recorded: operational, degraded, and inoperative.

To Save the DHCP Event Log

1. Click Next on the DHCP Event Log window.

2. Click Download File > Save the Event Log file on your local machine.