Cisco Catalyst 4500 Series - Defining the 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
Troubleshooting Tips
Use the debug ip dhcp server class command to display the class matching results.
Defining the DHCP Address Pool
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 class name
Defines a DHCP class and enters DHCP class configuration
mode.
Step 4
Switch(dhcp-class)# relay agent
information
Enters relay agent information option configuration mode.
• If you omit this step, the DHCP class matches any relay agent
information option, whether the relay agent information
option value is available or not.
Step 5
Switch(dhcp-class-relayinfo)#
relay-information hex pattern [*]
[bitmask mask]
(Optional) Specifies a hexadecimal value for full relay
information option.
• The pattern argument creates a pattern that is used to match
the DHCP class.
• If you omit this step, no pattern is configured and it is
considered a match to any relay agent information option
value, but the relay information option must be available in
the DHCP packet.
• You can configure multiple relay-information hex commands
in a DHCP class.
Step 6
Repeat Steps 3 through 5 for each DHCP class
you need to configure.
—
Step 7
Switch(dhcp-class-relayinfo)# end
Exits relay agent information option mode and returns to
privileged EXEC mode.
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.
• Multiple pools can be configured with the same class,
eliminating the need to configure the same pattern in multiple
pools.
Step 4
Switch(dhcp-config)# network
network-number [mask | /prefix-length]
Configures the subnet and mask for a DHCP address pool on a
Cisco IOS DHCP server.