Enabling Dhcp Server Port-Based Address Allocation - Cisco IE-3000-8TC Software Configuration Manual

Chapter 23 Configuring DHCP Features and IP Source Guard

Enabling DHCP Server Port-Based Address Allocation

Beginning in privileged EXEC mode, follow these steps to globally enable port-based address allocation
and to automatically generate a subscriber identifier on an interface.
Command
Step 1 configure terminal
Step 2 ip dhcp use subscriber-id client-id
Step 3 ip dhcp subscriber-id interface-name
Step 4 interface interface-id
Step 5 ip dhcp server use subscriber-id client-id
Step 6 end
Step 7
show running config
Step 8
copy running-config startup-config
After enabling DHCP port-based address allocation on the switch, use the ip dhcp pool global
configuration command to preassign IP addresses and to associate them to clients.
Beginning in privileged EXEC mode follow these steps to preassign an IP address and to associate it to
a client identified by the interface name.
Command
Step 1 configure terminal
Step 2 ip dhcp pool poolname
Step 3 network network-number [mask | /prefix-length]
Step 4 address ip-address client-id string [ascii]
Step 5 end
Step 6
show ip dhcp pool
Step 7
copy running-config startup-config
OL-13018-03
Configuring DHCP Server Port-Based Address Allocation
Purpose
Enter global configuration mode.
Configure the DHCP server to globally use the
subscriber identifier as the client identifier on all
incoming DHCP messages.
Automatically generate a subscriber identifier based
on the short name of the interface.
A subscriber identifier configured on a specific
interface takes precedence over this command.
Specify the interface to be configured, and enter
interface configuration mode.
Configure the DHCP server to use the subscriber
identifier as the client identifier on all incoming
DHCP messages on the interface.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
Purpose
Enter global configuration mode.
Enter DHCP pool configuration mode, and define the
name for the DHCP pool. The pool name can be a
symbolic string (such as Engineering) or an integer
(such as 0).
Specify the subnet network number and mask of the
DHCP address pool.
Reserve an IP address for a DHCP client identified by
the interface name.
string—can be an ASCII value or a hexadecimal
value.
Return to privileged EXEC mode.
Verify DHCP pool configuration.
(Optional) Save your entries in the configuration file.
Cisco IE 3000 Switch Software Configuration Guide
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