Are you sure of that it's not using DHCP scopes? I would expect that behavior 
if using DHCP scopes and you haven't got the option #60 set in the the DHCP 
scope as there is a bug in the Windows loaders.

//A

From: [email protected] [mailto:[email protected]] On 
Behalf Of Marable, Mike
Sent: den 30 september 2016 14:26
To: [email protected]; [email protected]
Subject: [mssms] UEFI PXE Across Router

I'm setting up a ConfigMgr lab in Hyper-V and testing my OSD task sequence.

I can PXE boot both Gen1 (BIOs) and Gen2 (UEFI) VMs that are on the same subnet 
as my primary site server and PXE enabled DP.  So far, so good.

I use a VM running Windows Server with RRAS as a router between the "main" 
subnet and a second subnet that represents a remote office.  I have a DHCP 
Relay Agent defined that points to my DHCP server as well as the IP address of 
my PXE enabled DP.

I can successfully PXE boot a Gen1 (BIOs) machine on this remote subnet, but 
Gen2 (UEFI) machines eventually time out.

In the SMSPXE log on the DP I can see that the request to PXE reached the DP 
but nothing seems to be reaching back to the client.

If I move the Gen2 VM from the "remote" subnet to the "main" subnet (where the 
servers all reside) then it will successfully PXE boot.  It just will not PXE 
boot across the router.

I am not using DHCP scope options.  I am only using the DHCP Relay Agent within 
RRAS.

A Gen1 VM will PXE across the router successfully, but a Gen2 will time out.

Both Gen1 and Gen2 VMs successfully PXE boot if they are on the same subnet as 
the servers.

Any ideas?  I feel like I'm just missing something simple.

Thanks

Mike Marable
Microsoft Systems Engineer Lead
Enterprise Device Engineering and Management
MCPS, MCITP, MCTS, MCSA, MCSE, MS  [ 
Profile<http://www.mycertprofile.com/Profile/5319166625> ] [ 
Blog<http://thesystemsmonkey.wordpress.com/> ]
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