Hi Ranjeeta, Everything is setup as you 've explained. Cygmon is running on IXP-box. Now it supposed to boot the linux os from the host computer through tftp. tftp running on host computer gets the request to transfer file 'zImage', sends first block and then waits for ack, but it does not get the ack from ixp-box. could you figure out what may be the problem. regards, Ashish