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Microsoft SCCM 2007 OSD Problem with Cisco 6509 DHCP

I have Microsoft SCCM 2007 Server, which is under VLAN15, i am using Catalyst 6509E as my DHCP with several VLANs. i have tested by creating a test dhcp pool range within same VLAN where my SCCM 2007 server resides, OSD (operating system deployment) deployment is successful without any errors. Across the VLANs i get errors while OSD deployment. under test DHCP pool i have added option 66, 67 plus i have also tried ip helper address under vlan interface but didnt help. Find my configuration for Servers VLAN and Client VLAN below.

By Client computer BIOS option are to boot from NIC.

Servers VLAN

----------------------------------------------------------

interface Vlan15
description SERVERS
ip address 172.20.15.1 255.255.255.0

Client VLAN

----------------------------------------------------------

interface Vlan30
ip address 172.30.10.20 255.255.255.0
ip helper-address 172.20.15.34

Note: 172.20.15.34 is my SCCM 2007 Server, i have also tried 172.20.15.1 as ip helper didnt help as well

Client DHCP Excluded Range

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ip dhcp excluded-address 172.30.10.20 172.30.10.50

Client DHCP Pool

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ip dhcp pool sccm
   network 172.30.10.0 255.255.255.0
   bootfile pxeboot
   default-router 172.30.10.20
   domain-name aou.edu.kw
   dns-server 172.20.15.31 172.20.15.30
   option 66 ip 172.20.15.34
   option 150 ip 172.20.15.34
   option 43 ip 172.20.15.34
   option 67 ip 172.20.15.34

Note: 172.20.15.34 is SCCM 2007 Server

Errors:

If i remove ip helper from interface VLAN of client, Client  takes IP address across VLAN but dont start OS deployment. i recieve below error.

PXE-E32: TFTP Open Timeout

If i provide ip helper address (SCCM 2007 Server ip address 172.20.15.34) under client VLAN i recieve below error.

PXE-T04: Access Violation

PXE-E36: Error Recieved from TFTP Server

PXE-M0F: Exiting Intel Boot Agent

Quick response will be appreciated.

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