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 configured as follow:
`` interface Serial1/0 ip address 10.0.23.2 255.255.255.0 ip helper-address 1.1.1.1encapsulation frame-relay ip ospf network broadcast ip ospf 1 area 0 serial restart-delay 0 frame-relay map ip 10.
