shakha

Thanks for your replay Qoute from my orginal post "On Cisco Switch we have created a second IP helper with SCCM server IP and deleted Bootp options on DHCP server but we get PXE-E53 error". I wonder is there any special settings in the SCCM side.

Thanks for your replay . As far as i understand this solution is for DHCP server installed in windows 2012 and 2012R2 . Do you know if it is applicable for 2008 DHCP server ?

We have legacy and UEFI clients. We are able to PXE boot either legacy BIOS or UEFI BIOS based clients but unable to PXE boot both at the same time . Currently SCCM is working with DHCP bootp options(066+067). Our DHCP server and SCCM server are in same VLAN but clients are in different VlANS. For this purpose we have configured an IP helper on Cisco-3750 switch, pointing towards centeral DHCP server. On DHCP server we have configured bootp options ponting towards SCCM server. On Cisco Switch we have created a second IP helper with SCCM server IP and deleted Bootp options on DHCP server but we get PXE-E53 error. Is it possible to configure PXE boot without DHCP bootp options ?. Is it any other way to IP helper for SCCM on cisco switches ? I have used this method interface Vlan XX no ip address ip helper-address DHCP server ip helper-address SCCM server Any help or suggestions are welcome