Applying An Extended Address Pool On An Interface - HP A7500 Series Configuration Manual

To do...
Enter system view
Enter interface view
Enable the DHCP server on an
interface
NOTE:
If a DHCP relay agent exists between the DHCP server and client, the DHCP server, regardless of whether
the subaddress keyword is used, will select an IP address from the address pool containing the primary IP
address of the DHCP relay agent's interface (connected to the client) for a requesting client.
NOTE:
When the DHCP server and client are on the same subnet:
With the keyword subaddress specified, the DHCP server will preferably assign an IP address from an
•
address pool that resides on the same subnet as the primary IP address of the server interface
(connecting to the client). If the address pool contains no assignable IP address, the server assigns an IP
address from an address pool that resides on the same subnet as the secondary IP addresses of the
server interface. If the interface has multiple secondary IP addresses, each address pool is tried in turn
for address allocation. If the interface has no secondary IP addresses, the server is unable to assign an
IP address to the client.
Without the keyword subaddress specified, the DHCP server can only assign an IP address from the
•
address pool that resides on the same subnet as the primary IP address of the server interface.

Applying an extended address pool on an interface

After you create an extended address pool and apply it on an interface, the DHCP server, upon receiving
a client's request on the interface, attempts to assign the client the statically bound IP address first and
then an IP address from the specified address pool. If no IP address is available in this address pool,
address allocation fails, and the DHCP server will not assign the client any IP address from other address
pools.
NOTE:
Only an extended address pool can be applied on the interface. The address pool to be referenced must
already exist.
Follow these steps to apply an extended address pool on an interface:
To do...
Enter system view
Enter interface view
Use the command...
system-view
interface interface-type interface-number
dhcp select server global-pool [ subaddress ]
Use the command...
system-view
interface interface-type
interface-number
46
Remarks
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Optional
Enabled by default.
Remarks
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