Configure Global Address Pool

A DHCP server can allocate IP addresses to clients by using the global address pool.

Context

You need to configure a DHCP server based on the global address pool to enable computers to obtain IP addresses from the global address pool dynamically.
A DHCP server based on the global address pool works with a DHCP relay agent.

Procedure

Query information about a Global Address Pool.
1. Choose Service Management > DHCP > Configure Global Address Pool in the navigation tree to open the Configure Global Address Pool page.
2. Set the search criteria.
3. Click Query to display all the matching records.

Create a global address pool.

Choose Service Management > DHCP > Configure Global Address Pool in the navigation tree to open the Configure Global Address Pool page.

Click New to open the Create a Global Address Pool page.

Table 1 describes the parameters on the Create a Global Address Pool page.

**Table 1** Create a Global Address Pool
Parameter		Description
Basic Settings	Address Pool Name	Indicates the name of an address pool.
	Subnet Address	Indicates the IP subnet of the address pool.
	Subnet Mask	Indicates the mask of the IP subnet. Select a mask from the drop-down list box, for example, 24 (255.255.255.0).
	Gateway IP	Indicates the IP address of a gateway. You can configure a maximum of eight gateway IP addresses.
	Expired	Indicates the lease of dynamic IP addresses. The default lease is one day. The value range is as follows: day: an integer ranging from 0 to 999 hour: an integer ranging from 0 to 23 minute: an integer ranging from 0 to 59 NOTE: Different address pools can have different IP address leases, but addresses in one pool have the same lease.
	Forbidden IP	Indicates the IP address that will not be dynamically allocated to users. NOTE: Some IP addresses are allocated to applications such as the DNS server and cannot be allocated to users. You can specify these IP addresses as forbidden IP addresses.
Configure DNS for the Address Pool	Client Domain Name	Indicates the domain name allocated by the DHCP server to the client.
Configure DNS for the Address Pool	DNS Server IP	Indicates the IP address of a DNS server. You can configure a maximum of eight DNS server addresses.
Configure NetBIOS for the Address Pool	NetBIOS Node Type	Indicates the type of a NetBIOS node. The options are: unspecified The NetBIOS node type is not specified. b-node The NetBIOS node obtains the mapping between the host name and IP address in broadcast mode. b represents broadcast. p-node The NetBIOS node obtains the mapping between the host name and IP address by communicating with the NetBIOS server. p represents peer to peer. m-node The NetBIOS node is a p-type node with some broadcast features. m represents mixed. h-node The NetBIOS node is a b-type node using the peer-to-peer communication mechanism. h represents hybrid. The default value is unspecified.
Configure NetBIOS for the Address Pool	NetBIOS Server IP	Indicates the IP address of a NetBIOS server. You can configure a maximum of eight NetBIOS server addresses.

Set parameters.
Click OK.

Modify a global address pool.
1. Choose Service Management > DHCP > Configure Global Address Pool in the navigation tree to open the Configure Global Address Pool page.
2. Click to open the Modify Global Address Pool page.
  NOTE:
  - Table 1 describes the parameters on the Modify Global Address Pool page.
  - The address pool name cannot be modified.
3. Set parameters.
4. Click OK.
Delete a global address pool.
1. Choose Service Management > DHCP > Configure Global Address Pool in the navigation tree to open the Configure Global Address Pool page.
2. Select a record that you want to delete and click Delete. The system asks you whether to delete the record.
3. Click OK.