HP-UX

Hi,all:
I want to boot an IA unix box from network, I am sure I set the DHCP and boot server, but it still failed !

It says : Client MAC Address: 00 18 FE 28 91 82 .....-
PXE-E16: Valid PXE offer not received.
Load of Core LAN Gb A failed: Not Found

I use the nettl command to trace the UDP package, it writes:


^^^^^^^^^^^^^^^^^^^^^^Gigabit Ethernet LAN/9000 Networking^^^^^^^^^^^^^^^^^^@#%
Timestamp : Fri Apr 27 EAT 2007 16:57:52.714302
Process ID : [ICS] Subsystem : IGELAN
User ID ( UID ) : -1 Trace Kind : PDU IN TRACE
Device ID : 0 Path ID : -1
Connection ID : 0
Location : 00123
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
=================================== Ethernet ====================================
Source : 00-18-fe-28-91-82 [I] [ ]
Dest : ff-ff-ff-ff-ff-ff [B] [ ] TRACED LEN: 590
Date : Fri Apr 27 16:57:52.714302 EAT 2007
================================ IP Header (inbound -- [ICS]) ================
Source: 0.0.0.0 (A) Dest: 255.255.255.255(E)
len: 576 ttl: 16 proto: 17 cksum: 0xf3ee id: 0xb4bf
flags: NONE tos: 0x0 hdrlen: 20 offset: 0x0 optlen: 0
-------------------------------- UDP Header ----------------------------------
sport: 68 --> dport: 4109 data len: 548 chksum: 0x3c04
-------------------------------- BOOTP Request -------------------------------
trans id : 0x13880000 seconds : 159 hops : 0
server IP: NULL client IP: NULL your IP: NULL
gateway IP: NULL h/w type : 1 flags : 32768
client h/w addr : 00-18-fe-28-91-82
server name : NULL
file name : NULL
vendor specific : VM_RFC1048

From the document, I got that the client port is 68, the server port should be 67, I mean the DHCP server listening port, while in the UDP package, it shows 4109.
Thanks !