Cisco Catalyst 4500 Series - Configuring a DHCP Address Pool

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Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 59 Configuring the Cisco IOS DHCP Server
Configuring DHCP Address Pools
Configuring a DHCP Address Pool
On a per-address pool basis, specify DHCP options for the client as necessary.
Before you configure the DHCP address pool, you must:
• Identify DHCP options for devices where necessary, including the following:
– Default boot image name
– Default devices
– Domain Name System (DNS) servers
– Network Basic Input/Output System (NetBIOS) name server
– Primary subnet
– Secondary subnets and subnet-specific default device lists (see Configuring a DHCP Address
Pool with Secondary Subnets section for information on secondary subnets).
• Decide on a NetBIOS node type (b, p, m, or h).
• Decide on a DNS domain name.
Note You cannot configure manual bindings within the same pool that is configured with the network DHCP
pool configuration command. To configure manual bindings, see the Configuring Manual Bindings
section.
Command or Action Purpose
Step 1
Switch> enable
Enables privileged EXEC mode.
• Enter your password if prompted.
Step 2
Switch# configure terminal
Enters global configuration mode.
Step 3
Switch(config)# ip dhcp pool name
Assigns a name to a DHCP pool and enters DHCP configuration
mode.
Step 4
Switch(dhcp-config)# utilization mark
high percentage-number [log]
(Optional) Configures the high utilization mark of the current
address pool size.
• The log keyword enables the logging of a system message. A
system message will be generated for a DHCP pool when the
pool utilization exceeds the configured high utilization
threshold.
Step 5
Switch(dhcp-config)# utilization mark low
percentage-number [log]
(Optional) Configures the low utilization mark of the current
address pool size.
• The log keyword enables the logging of a system message. A
system message will be generated for a DHCP pool when the
pool utilization falls below the configured low utilization
threshold.
Step 6
Switch(dhcp-config)# network
network-number [mask | /prefix-length]
[secondary]
Specifies the subnet network number and mask of the DHCP
address pool.
Step 7
Switch(dhcp-config)# domain-name domain
Specifies the domain name for the client.