To that end, I discovered something interesting on friday and am about to open 
a microsoft case, maybe y’all have seen this before.

1. Our SCCM environment is on a separate segment than our workstations.
2. Option 66,67 point to SCCM
3. SCCM is valid and working
4. DHCP and SCCM are on separate machines and subnets
5. IP Helpers are turned on for port 4011

Here’s the odd issue:

If Option 60 is set correctly in DHCP, I can PXE Boot just fine on a UEFI 
machine, but not on a BIOS machine (The PXE stack just waits forever and 
doesn’t get a referral)

If I Remove Option 60, I can PXE Boot a BIOS client, but not a UEFI client.

I did not have this issue in my previous environment (Larger network, other 
employer)

Do I have to enable IP Helpers for port 67 too?

so, yeah, anyone have any ideas on this?

Thanks -j


On Mar 6, 2015, at 5:19 PM, Marable, Mike 
<[email protected]<mailto:[email protected]>> wrote:

You don’t have to do anything special to PXE boot both legacy BIOs and UEFI.  
No special boot images, no special configuration of the server.  The same boot 
image can boot both BIOs and UEFI.

Mike



From: Matt Tinney <[email protected]<mailto:[email protected]>>
Reply-To: "[email protected]<mailto:[email protected]>" 
<[email protected]<mailto:[email protected]>>
Date: Friday, March 6, 2015 at 8:03 PM
To: "[email protected]<mailto:[email protected]>" 
<[email protected]<mailto:[email protected]>>
Subject: [MDT-OSD] Legacy and UEFI PXE in same environment

How do i get legacy and UEFI PXE with SCCM 2012 R2 CU4 working in the same VLAN?

I have my DHCP and PXE Service Point separated on different VLANs.

How is it possible to get working?

--
Matthew Tinney
(206) 778 4432
Windows Management Experts, Inc
www.windowsmanagementexperts.com<http://www.windowsmanagementexperts.com/>

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