To make sure that the TFTP server installed and is running, issue the following command at a system prompt (on the console or within a Putty ssh session)

netstat -nulp|grep 69

You should see a result that includes a line that looks similar to the following:

udp 0 0 0.0.0.0:69 0.0.0.0:*

If you need to, install TFTP at a system prompt (logged in as root) as follows:

yum -y install tftp-server
/sbin/chkconfig --level 345 xinetd on
/sbin/chkconfig --level 345 tftp on
service xinetd restart