I have the ROACH virtex 5, I installed OS Centos 5.8 and I realized a Network File Sharing (NFS) filesystem on a server, so the ROACH can boot off the network using BOOTP. It will take you through setting up a DHCP/DNS/TFTP server, as well as setting up an NFS share.
I did the configuration in the terminal for boot via dhcp+tftp+nfs and type run netboot, but when I like booting from NFS (Network File Sharing) and I do run netboot , I saw BOOTP bradcast 1 , etc . Retry count exceeded; starting
again. How Can I resolved? see https://casper.berkeley.edu/wiki/ROACH_NFS_guide