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DHCP Commands
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network
This command configures the subnet number and mask for a DHCP address pool.
Use the no form to remove the subnet number and mask.
Syntax
network network-number [mask]
no network
• network-number - The IP address of the DHCP address pool.
• mask - The bit combination that identifies the network (or subnet) and the
host portion of the DHCP address pool.
Command Mode
DHCP Pool Configuration
Usage Guidelines
• 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 relay server). If there is no gateway in the client
request (i.e., the request was not forwarded by a relay server), the switch
searches for a network pool matching the interface through which the client
request was received. It then searches for a manually configured host address
that falls within the matching network pool. If no manually configured host
address is found, it assigns an address from the matching network address
pool. However, if no matching address pool is found the request is ignored.
• This command is valid for DHCP network address pools only. If the mask is
not specified, the class A, B, or C natural mask is used (see page 3-227). The
DHCP server assumes that all host addresses are available. You can exclude
subsets of the address space by using the ip dhcp excluded-address
command.
Example
default-router
This command specifies default routers for a DHCP pool. Use the no form to
remove the default routers.
Syntax
default-router address1 [address2]
no default-router
• address1 - Specifies the IP address of the primary router.
• address2 - Specifies the IP address of an alternate router.
Default Setting
None
Console(config-dhcp)#network 10.1.0.0 255.255.255.0
Console(config-dhcp)#