First of all: autoinstall works only on the first serial interface of the router, don't forget it.

This is the topology for the small lab:

"https://www.ifconfig.it/images/page4_blog_entry97-autoinstall_fr.jpg"

R1 is a TFTP server, it stores R3 configuration in flash.

R3 has no configuration.

R2 interface is …

Autoinstall is a quite interesting topic, it deserves some labbing.

Start from the DOC-CD as usual, we focus on the LAN implementation first.

You can find HERE the flowchart of the autoinstall process.

This guide is quite clear too:

AutoInstall Using DHCP for LAN Interfaces

This is the topology we'll use: …