Default Port-Based Address Allocation Configuration; Port-Based Address Allocation Configuration Guidelines; Enabling Dhcp Server Port-Based Address Allocation - Cisco ME 3400 Software Configuration Manual

Configuring DHCP Server Port-Based Address Allocation

Default Port-Based Address Allocation Configuration

By default, DHCP server port-based address allocation is disabled.

Port-Based Address Allocation Configuration Guidelines

These are the configuration guidelines for DHCP port-based address allocation:
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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
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
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Only one IP address can be assigned per port.
Reserved addresses (preassigned) cannot be cleared by using the clear ip dhcp binding global
configuration command.
Preassigned addresses are automatically excluded from normal dynamic IP address assignment.
Preassigned addresses cannot be used in host pools, but there can be multiple preassigned addresses
per DHCP address pool.
Chapter 19 Configuring DHCP Features and IP Source Guard
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.
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