Reference Guide

DHCP Server Responsibility Description
Responding To Client Requests DHCP servers respond to different types of requests from
clients, primarily, granting, renewing, and terminating
leases.
Providing Administration Services DHCP servers include functionality that allows an
administrator to implement policies that govern how DHCP
performs its other tasks.
Configuring the Server for Automatic Address Allocation
Automatic address allocation is an address assignment method by which the DHCP server leases an IP address to a
client from a pool of available addresses.
An address pool is a range of IP addresses that the DHCP server may assign. The subnet number indexes the address
pools.
To create an address pool, follow these steps.
1. Access the DHCP server CLI context.
CONFIGURATION mode
ip dhcp server
2. Create an address pool and give it a name.
DHCP mode
pool name
3. Specify the range of IP addresses from which the DHCP server may assign addresses.
DHCP <POOL> mode
network network/prefix-length
– network: the subnet address.
– prefix-length: specifies the number of bits used for the network portion of the address you specify.
The prefix-length range is from 17 to 31.
4. Display the current pool configuration.
DHCP <POOL> mode
show config
After an IP address is leased to a client, only that client may release the address. FTOS performs a IP + MAC source
address validation to ensure that no client can release another clients address. This validation is a default behavior and
is separate from IP+MAC source address validation.
Configuration Tasks
To configure DHCP, an administrator must first set up a DHCP server and provide it with configuration parameters and
policy information including IP address ranges, lease length specifications, and configuration data that DHCP hosts
need.
Configuring the Dell system to be a DHCP server is a three-step process:
1. Configuring the Server for Automatic Address Allocation
2. Specifying a Default Gateway
3. Enabling the DHCP Server
225