ping is failing


   I am using the linux kernel 2.6.36 for the OMAP3530 beagle board. File system used is ramdisk.gz which I downloaded from
I am able to assign the IP address to the usb0 interface. But, when I ping from the host / target, its failing.
   Ping is working fine for the kernel 2.6.32 with jffs2 file system instead ramdisk.gz.

What exactly I need to do to use the ramdisk.gz?
Any extra configuration need to be done in the kernel?

Thanks in advance,

ravi holal