Configuration Guidelines; Configuration Procedure; Applying An Extended Address Pool On An Interface - HP 10500 Series Configuration Manual

Configuration guidelines

Follow these guidelines when you enable the DHCP server on an interface:
If a DHCP relay agent exists between the DHCP server and client, the DHCP server, regardless of
•
whether the subaddress keyword is used, selects 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.
When the DHCP server and client communicate without Layer 3 forwarding:
•
With the keyword subaddress specified, the DHCP server preferably assigns 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.
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.

Configuration procedure

To enable the DHCP server on an interface:
Step
1. Enter system view.
2. Enter interface view.
3. Enable the DHCP server on
the interface.

Applying an extended address pool on an interface

After you create an extended address pool and apply it on an interface, a 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 does not assign the client any IP address from other
address pools.
Only an extended address pool can be applied on the interface. The address pool to be applied must
already exist.
To apply an extended address pool on an interface:
Step
1. Enter system view.
2. Enter interface view.
Command
system-view
interface interface-type
interface-number
dhcp select server global-pool
[ subaddress ]
Command
system-view
interface interface-type
interface-number
47
Remarks
N/A
N/A
Optional.
The default setting is enabled by
default.
Remarks
N/A
N/A