Default Setting
One day
Command Modes
DHCP Pool Configuration
Example
The following example leases an address to clients using th is pool f or 7 days.
Console(config-dhcp)#lease 7
Console(config-dhcp)#
host
Use this command to specify the IP address and net wor k m a sk t o m a nually bind to a
DHCP client. Use the
no
form to remove the IP address for the client.
Syntax
host
address [mask]
no host
• address - Specifies the IP address of a client.
• mask - Specifies the network mask of the client.
Default Setting
None
Command Mode
DHCP Pool Configuration
Usage Guidelines
• Host addresses must fall within the range specified for an existing network pool.
• When a client request is received, the switch first checks for a network
address pool matching the gateway where the request originated (i.e., if the
request was forwarded by a rela y ser ver) . I f t here is n o ga te way in the cli ent
request (i.e., the request was not forwa rded by a rel ay server ), the s witch
searches for a network pool matching the interface throug h which the client
request was received. It then searches for a manually configured host address
that falls within the matching network pool.
• When searching for a manual binding, th e switch compares the client identifie r
for DHCP clients, and then compares the hardware address for DHCP or
BOOTP clients.
• If no manual binding has been specified for a host entry with the
client-identifier
or
hardware-address
commands, then the switch will
assign an address from the matching network pool.
• If the mask is unspecified, DHCP examines its address poo ls. If no mask is
found in the pool database, the Class A, B, or C nat ural mas k is used (s ee
page 20-5). This command is valid for manual bindings only.
39-12
DHCP Commands
39