Cisco 300 Series Cli Manual page 296

Stackable managed switches

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Table of Contents

DHCP Server Commands

OL-32830-01 Command Line Interface Reference Guide

User Guidelines

The option command enables defining any option that cannot be defined by other

special CLI commands. A new definition of an option overrides the previous

definition of this option.

The boolean keyword may be configured for the following options: 19, 20, 27,

29-31, 34, 36, and 39.

The integer keyword may be configured for the following options: 2, 13, 22-26, 35,

37-38, 132-134, and 211. The switch checks the value range and builds the value

field of the size in accordance with the option definition.

The ascii keyword may be configured for the following options: 14, 17-18, 40, 64,

130, 209, and 210.

The ip keyword may be configured for the following options: 16, 28, 32, 128-129,

131, 135, and 136.

The ip-list keyword may be configured for the following options: 5, 7-11, 33, 41, 42,

45, 48, 49, 65, 68-76, and 150.

The hex keyword may be configured for any option in the range 1-254 except for

the following: 1, 3-4, 6, 12, 15, 44, 46, 50-51, 53-54, 56, 66-67, 82, and 255. The

switch does not validate the syntax of an option defined by this format.

Example 1. The following example configures DHCP option 19, which specifies

whether the client should configure its IP layer for packet forwarding:

switchxxxxxx(config-dhcp)#

Enable/Disable Option"

Example 2. The following example configures DHCP option 2, which specifies the

offset of the client in seconds from Coordinated Universal Time (UTC):

switchxxxxxx(config-dhcp)#

Example 3. The following example configures DHCP option 72, which specifies the

World Wide Web servers for DHCP clients. World Wide Web servers 172.16.3.252

and 172.16.3.253 are configured in the following example:

switchxxxxxx(config-dhcp)#

option 19 boolean true description "IP Forwarding

integer 3600

ip-list 172.16.3.252 172.16.3.253