Users Guide

548 DHCP and USB Auto-Configuration

Assignment or configuration of an IP address for the switch

Assignment of a TFTP server

Obtaining image, network and host configuration files for the switch from

a TFTP server

Auto Configuration is successful when an image or configuration file is

downloaded to the switch or stack master from a TFTP server and processed.

What Files Does DHCP Auto-Configuration Use?

DHCP Auto-Configuration uses three types of files:

• Image Configuration File: This file contains a single line of ASCII text

with the path and filename of the switch firmware image located on the

TFTP server.

• Network Configuration File: This file contains one of more lines of ASCII

text with the command ip host followed by a switch IP address and a host

name on each line.

• Host Configuration File: This file contains one of more lines of ASCII CLI

configuration that are executed in Privileged Exec mode on the switch.

Each line contains a single command.

Obtaining IP Address Information

DHCP is enabled by default on the Out-of-Band (OOB) interface on Dell

EMC Networking N2200X-ON, N3000E-ON and N3100-ON Series switches.

DHCP is enabled by default on VLAN 1 on the Dell EMC Networking

N1100-ON, N1500, N2000, and N2100-ON Series switches. If an IP address

has not been assigned, the switch issues requests for an IP address

assignment.

A network reachable DHCP server may return the following information:

• IP address and subnet mask to be assigned to the switch

• IP address of a default gateway, if needed for IP communication

NOTE: The downloaded configuration file is not automatically saved to startup-

config. You must explicitly issue a save request (copy running-config startup-

config) in order to save the configuration. If the downloaded configuration is not

saved to the startup-config, DHCP auto configuration will be done every time the

DHCP lease expires.