Installation guide

Switch Services 5-5
5. Refer to the following as displayed within Network Pool field.
6. Click the Edit button to modify the properties displayed on an existing DHCP pool. For more information,
see Editing the Properties of an Existing DHCP Pool on page 5-5.
7. To delete an existing DHCP pool from the list of those available, highlight the pool from within the
Network Pool field and click the Delete button.
8. Click the Add button to create a new DHCP pool. For more information, see Adding a New DHCP Pool on
page 5-6.
9. Click the Options button to associate values to options, as defined using the Options Setup functionality.
The values associated to options are local to the pool with which they are associated For more
information, see Configuring DHCP Global Options on page 5-8.
10.Click the DDNS button to configure a DDNS domain and server address used with the list of available
pools. For more information, see Configuring DHCP Server DDNS Values on page 5-9.
11.Click the Options Setup button to define the option name, code and type. Associate values to them (by
clicking the Options button) only after the options are defined.
12.Click Apply to save changes to the screen. Navigating away from the screen without clicking Apply
results in all changes to the screen being lost.
13.Click the Revert button to display the last saved configuration. Unapplied changes are not saved and
must be re-entered.
5.2.1.1 Editing the Properties of an Existing DHCP Pool
The properties of an existing pool can be modified to suit the changing needs of your network.
To modify the properties of an existing pool:
1. Select Services > DHCP Server from the main menu tree.
2. Select an existing pool from those displayed (within the Network Pool field) and click the Edit button.
3. Modify the name of the IP pool from which IP addresses can be issued to client requests on this interface.
4. Modify the Domain name as appropriate
for the interface using the pool.
5. Modify the NetBios Node used with this particular pool. The NetBios Node could have one of the
following types:
•A b-broadcast (broadcast node) broadcasts to query network nodes for the owner of a NetBIOS
name.
Pool Name
Displays the name of the IP pool from which IP addresses can be issued to DHCP
client requests on the current interface. The pool is the range of IP addresses
available.
Network
Displays the network address for the clients.
Lease Time
(dd:hh:mm)
When a DHCP server allocates an address for a DHCP client, the client is assigned
a lease (which expires after a designated interval defined by the administrator). The
lease time is the time an IP address is reserved for re-connection after its last use.
Using very short leases, DHCP can dynamically reconfigure networks in which there
are more computers than there are available IP addresses. This is useful, for
example, in education and customer environments where MU users change
frequently. Use longer leases if there are fewer users.
Domain
Displays the domain name for the current interface.