Configuring A Dhcp Address Pool With Secondary Subnets - Cisco Catalyst 4500 Series Software Configuration Manual

Chapter 59 Configuring the Cisco IOS DHCP Server
Command or Action
Step 15
Switch(dhcp-config)# lease {days [hours
[minutes]] | infinite}
Step 16
Switch(dhcp-config)# end

Configuring a DHCP Address Pool with Secondary Subnets

For any DHCP pool, you can configure a primary subnet and any number of secondary subnets.
Command or Action
Step 1
Switch> enable
Step 2
Switch# configure terminal
Step 3
Switch(config)# ip dhcp pool name
Step 4
Switch(dhcp-config)# utilization mark
high percentage-number [log]
Step 5
Switch(dhcp-config)# utilization mark low
percentage-number [log]
Step 6
Switch(dhcp-config)# network
network-number [mask | /prefix-length]
[secondary]
Step 7
Switch(dhcp-config)# domain-name domain
Step 8
Switch(dhcp-config)# dns-server address
[address2 ... address8]
Step 9
Switch(dhcp-config)# bootfile filename
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Purpose
Optional) Specifies the duration of the lease.
• The default is a one-day lease.
• The infinite keyword specifies that the duration of the lease
is unlimited.
Exits DHCP configuration mode and returns to privileged EXEC
mode.
Purpose
Enables privileged EXEC mode.
Enter your password if prompted.
•
Enters global configuration mode.
Assigns a name to a DHCP pool and enters DHCP configuration
mode.
(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.
(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.
Specifies the subnet network number and mask of the DHCP
address pool.
Specifies the domain name for the client.
Specifies the IP address of a DNS server that is available to a
DHCP client.
One IP address is required; however, you can specify up to
•
eight IP addresses in one command.
Servers should be listed in order of preference.
•
(Optional) Specifies the name of the default boot image for a
DHCP client.
The boot file is used to store the boot image for the client. The
•
boot image is generally the operating system that the client
uses to load.
Configuring DHCP Address Pools
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