Here is a quick overview of my setup:
I have a B1600 shelf with 5 B100n's and 1 LoadBalancing Blade.
I also have a 280r on the same network which is the install/tftp/config server for jumpstart.

I am having a problem trying to jumpstart a new blade with solaris 10. When I "boot net - install" it just does this: Requesting Ethernet address for: (some random ip on the class b network). I do see it accessing the tftp server and pulling the boot image and then mounting the install path to the Solaris 10 cd's. I never see it trying to mount the directory where the sysidcfg file is located though. The solaris 10 jumpstart does work if I do "boot net - text" for a interactive install but I need to do the automated since I am doing a flash install. I guess the problem is that it does not try to pull the sysidcfg file which I don't know why. It is specified in the /etc/bootparams file correctly. Here is my add_install_client line:
/export/install/sol_10/Solaris_10/Tools/add_install_client -e <ether> -c server:/jumpstart -p server:/jumpstart <hostname> sun4u

Using the same syntax, I can jumpstart with solaris 9. Anyone with some help?