ddns-update-style ad-hoc;
allow booting;
default-lease-time 600;
max-lease-time 1200;
deny unknown-clients;
not authoritative;
# SUN Jumpstart Specific Definitions  - DO NOT ALTER
option space SUNWSol10;
option SUNWSol10.SrootIP4 code  2 = ip-address;
option SUNWSol10.SrootNM  code  3 = text;
option SUNWSol10.SrootPTH code  4 = text;
option SUNWSol10.SinstIP4 code 10 = ip-address;
option SUNWSol10.SinstNM  code 11 = text;
option SUNWSol10.SinstPTH code 12 = text;
option SUNWSol10.SsysidCF code 13 = text;
option SUNWSol10.SjumpsCF code 14 = text;
option SUNWSol10.SbootURI code 16 = text;
group {

  ###  CHANGE next-server to TFTP server ###
  next-server 172.16.190.239;
  filename "pxegrub.I86PC.Solaris_10-3"; # New Solaris Stage 1 boot program.


  ###  CHANGE VALUES FOR INSTALL AND ROOT SERVERS AS APPROPRIATE ###
  class "SUNW.i86pc" {
    match if option vendor-class-identifier = "SUNW.i86pc";
    vendor-option-space SUNWSol10;
    option SUNWSol10.SrootIP4 <IP ADDRESS OF YOUR SERVER>;
    option SUNWSol10.SrootNM  "HOSTNAME OF YOUR SERVER";
    option SUNWSol10.SrootPTH
            "/export/jumpstart/Solaris_10/Tools/Boot";
    option SUNWSol10.SinstIP4 <IP ADDRESS OF YOUR SERVER>;
    option SUNWSol10.SinstNM  "HOSTNAME OF YOUR SERVER";
    option SUNWSol10.SinstPTH "/export/jumpstart/Solaris_10";
    option SUNWSol10.SsysidCF
            "<IP ADDRESS OF YOUR SERVER>:/jumpstart/sysidcfg";
    option SUNWSol10.SjumpsCF "<IP ADDRESS OF YOUR SERVER>:/jumpstart";
    option SUNWSol10.SbootURI "tftp://<IP ADDRESS OF YOUR SERVER>/pxegrub";

  }

Still need host and subnet declarations.