[Ext] quistion about PXE boot

[Jim Glassford]

Hi Julie,

Maybe related to dhcp snooping on layer two switch.
If PXE server is different than dhcp server, snooping would block PXE 
boot. Would see this in the switch logs.
If using HP ProCurve switch running older firmware, known problems 
with PXE booting with dhcp snooping enabled, upgrade or disable dhcp 
snooping. (not sure of versions with problems and nothing logged was 
when this happened)

best!
jim

On Sat, 9 Apr 2016 00:21:43 +0000
  Julie Xu <J.Xu at westernsydney.edu.au> wrote:
> Hi,
> 
> I have problem with one campus PXE boot.
> 
> Basically, when you boot a window machine normally, it can get ip 
>addres, but if you do PXE boot, it can not get.
> 
> This case happens when we change network switch. Yes, it is switch 
>issue, not dhcp.
> 
> But, what is different PXE boot and normally boot different?
> 
> On PXE boot, I can see the dhcp discover send out; I can see dhcp 
>offer send out from dhcp server. but, the dhcp offer never pass the 
>switch to the machine.
> 
> 
> Any comments will be appreciated
> 
> Thanks in advance
> 
> Julie Xu
>