Using TFTP To Manage Your Router’s Software
Enable TFTP on your FreeBSD machine:
#vi /etc/inetd.conf
(uncomment the #tftp line)
#killall –HUP inetd
(restart INETD and load TFTPD)
#netstat –an
(check to see TFTP port is bound)
#touch /tftpboot/cisco-router
(create the router data for TFTP)
#chmod 666 /tftp/cisco-router
(make the data file world writeable)