Administrator Guide

Conguring 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: species the number of bits used for the network portion of the address you specify.
The prex-length range is from 17 to 31.
4 Display the current pool conguration.
DHCP <POOL> mode
show config
After an IP address is leased to a client, only that client may release the address. Dell Networking OS 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.
Conguration Tasks
To congure DHCP, an administrator must rst set up a DHCP server and provide it with conguration parameters and policy information
including IP address ranges, lease length specications, and conguration data that DHCP hosts need.
Conguring the Dell system to be a DHCP server is a three-step process:
1 Conguring the Server for Automatic Address Allocation
2 Specifying a Default Gateway
Related Conguration Tasks
• Congure a Method of Hostname Resolution
• Creating Manual Binding Entries
• Debugging the DHCP Server
• Using DHCP Clear Commands
Dynamic Host
Conguration Protocol (DHCP) 293