This section provides detailed information about configuring DHCP objects using the DNS/DHCP Management Console. All the procedures in this section assume that you have already launched the utility and that you have selected the DHCP Service tab.
Refer to Setting Up DHCP for information about setting up DHCP and creating DHCP objects. The following sections provide detailed information about modifying DHCP objects:
Refer to Creating a DHCP Server Object for information about creating a DHCP Server object. After a DHCP Server object has been created, you can double-click the server icon to display and modify detailed information about the DHCP Server object. The DHCP Server object's detailed information window displays two tab pages, Server and Options.
On the Server tab page, you can view the Subnet Address Ranges Serviced by this Server and Subnets Serviced by this Server. You can enter comments (up to 256 characters) about the server in the comments field.
On the Options tab page, you can configure policies specific to this DHCP server. You can configure the Set SNMP Traps Option parameter for None (default), Major Events, or All. You can configure the Set Audit Trail and Alerts Option parameter for None (default), Major Events, or All. You can also set the Enable Audit Trail Log on this page (the default is not enabled).
You can also configure the Mobile User Options parameter on the Options tab page to the following:
Another option available on the DHCP server Options tab page is Ping Enable. Click this check box to have the server ping an address before the address is assigned to a device. Doing so ensures that the address is not already in use; however pinging the address also increases network traffic.
For information about creating a Subnet object, refer to Creating a Subnet Object. After a Subnet object has been created, you can use the DNS/DHCP Management Console to display three tab pages of detailed information about the Subnet object that include Address, Subnet Options, and Other DHCP Options.
The Address tab page displays Subnet Address, Mask, and Type attributes from information entered when the object was created. If changes are required to these attributes, you must delete the Subnet object and re-create it.
If you are going to use Dynamic DNS, this is the page where you configure the DNS zone for dynamic updating (DDNS) and Domain name.
You can modify the subnet pool reference from the default (none) to the subnet pool to which this Subnet object is assigned.
You can also modify the subnet's default DHCP Server on the Address tab page and enter up to 256 characters of information in the Comments field.
You can configure lease types on the Subnet Options tab page. A lease type can be permanent or timed. If you specify leases to be timed, specify the lease duration in days, hours, and minutes.
You also specify the settings for Set Boot Parameter Options on the Subnet Options tab page.
DHCP options can be configured from the Other DHCP Options tab page. Any options that are set for this subnet are displayed here. You can set additional DHCP options by clicking Modify which displays the Modify DHCP Options window. You a DHCP option from the Available DHCP Options list, then click Add.
Click Default to display the Default DHCP Options window listing all DHCP options and values configured for a subnet.
Refer to Creating Subnet Address Ranges for information about creating a Subnet Address Range object. To modify a Subnet Address Range object, you must first select the object, which displays in the left pane of the DHCP Service window. Clicking on the Subnet Address Range object displays the its detailed information in the right pane and enables modifications.
The following range type options are available:
You can also specify a DHCP server other than the default server for this Subnet Address Range object.
Refer to Creating IP Address Objects for information about creating IP Address objects. After an IP Address object has been created, its detailed information window displays three tab pages:
On the Address tab page, the IP Address field of the object is displayed in read-only format. You can set the Assignment Type parameter to Manual or Excluded, and you can specify a client identifier.
You can change the MAC type from the default FF Any to any of the following:
You can enter the IP Address's MAC address, hostname, DNS domain suffix, and identify an NDS object to use a specific IP Address on the address tab page.
The Usage tab page displays the IP Address Lease Expiration option, which can be either Permanent or Timed. If Timed is selected, the year, month, day, hour, and minute that the lease expires is displayed.
DHCP options can be configured from the Other DHCP Options tab page. Any options that are set for this IP Address object are displayed here. You can set additional DHCP options by clicking Modify.
A Subnet Pool object is a logical group of related Subnet objects of the same type. A Subnet Pool object can be created or located under any of the following objects:
To create a new Subnet Pool object, complete the following steps:
Click Create on the tool bar.
Select Subnet Pool and click OK.
Enter a unique name for the Subnet Pool object.
Use the browse button to select the NDS context in which to create the Subnet Pool object.
After a Subnet Pool object has been created, you can select it and check the Define Additional Properties check box to display the detailed information window and to add Subnet objects to and remove them from the Subnet Pool object. Only Subnet objects with the same range type can be added to a Subnet Pool object.
Click Add to bring up a dialog box with a list of available Subnet objects (either LAN or WAN) to be added to the list. After a Subnet object has been added to the Subnet Pool object, its NDS distinguished name is updated in the Subnet object's Subnet Pool List attribute.