Dell S3048-ON, Configuration Manual

Page: 246 / 1036

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. 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.
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
Related Configuration Tasks
• Configure a Method of Hostname Resolution
• Creating Manual Binding Entries
• Debugging the DHCP Server
• Using DHCP Clear Commands
246 Dynamic Host Configuration Protocol (DHCP)