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client (with the
host
command) if required. You can configure up to 8 network
address pools, and up to 32 manually bound host address pools (i.e., listing
one host address per pool). However, note that any address specified in a
host
command must fall within the range of a configured network address
pool.
Example
Console(config)#ip dhcp pool R&D
Console(config-dhcp)#
Related Commands
network (39-7)
host (39-12)
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 20-5). 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
Console(config-dhcp)#network 10.1.0.0 255.255.255.0
Console(config-dhcp)#
39-7
DHCP Server
39