1)windows2003
netsh dhcp server dump > c:\exportdhcp_win2003.txt

2)windows2008R2
netsh dhcp server dump > c:\importdhcp_win2008r2.txt

3)查看windows2003dhcp服务器导出的文件exportdhcp_win2003.txt
有以下内容：
-----------------------------------
Dhcp Server 172.17.88.103 Add Class "默认路由和远程访问类别" "远程访问客户端的用户类别" 525241532e4d6963726f736f6674 0 b
Dhcp Server 172.17.88.103 Add Class "默认 BOOTP 的类别" "BOOTP 客户端的用户类别" 424f4f54502e4d6963726f736f6674 0 b
Dhcp Server 172.17.88.103 Add Class "Microsoft Windows 2000 选项" "Windows 2000 客户端的 Microsoft 供应商特定选项" 4d53465420352e30 1 b
Dhcp Server 172.17.88.103 Add Class "Microsoft Windows 98 选项" "Windows 98 客户端的 Microsoft 供应商特定选项" 4d534654203938 1 b
Dhcp Server 172.17.88.103 Add Class "Microsoft 选项" "适用于 Windows 98 和 Windows 2000 客户端的 Microsoft 供应商特定选项" 4d534654 1 b
------------------------------------

4)查看windows2008R2dhcp服务器导出的文件importdhcp_win2008r2.txt
有以下内容：
-内容A---------------------------------------------
# =====================================
#???? Add Classes?????????????????????
# =====================================

Dhcp Server \\WIN-8A0G94PHHBT Add Class "Default Routing and Remote Access Class" "User class for remote access clients" 525241532e4d6963726f736f6674 0 b
Dhcp Server \\WIN-8A0G94PHHBT Add Class "Default Network Access Protection Class" "Default special user class for Restricted Access clients" 4d5346542051756172616e74696e65 0 b
Dhcp Server \\WIN-8A0G94PHHBT Add Class "Default BOOTP Class" "User class for BOOTP Clients" 424f4f54502e4d6963726f736f6674 0 b
Dhcp Server \\WIN-8A0G94PHHBT Add Class "Microsoft Windows 2000 Options" "Microsoft vendor-specific options for Windows 2000 and above Clients" 4d53465420352e30 1 b
Dhcp Server \\WIN-8A0G94PHHBT Add Class "Microsoft Windows 98 Options" "Microsoft vendor-specific options for Windows 98 Clients" 4d534654203938 1 b
Dhcp Server \\WIN-8A0G94PHHBT Add Class "Microsoft Options" "Microsoft vendor-specific options applicable to all Windows Clients" 4d534654 1 b

# =====================================
#???? Add Classes? End????????????????
# =====================================

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


5)使用以下命令行在windows2003dhcp服务器上删除注册类：
---------------------
netsh Dhcp Server 172.17.88.103 delete Class "默认路由和远程访问类别" "远程访问客户端的用户类别" 525241532e4d6963726f736f6674 0 b
netsh Dhcp Server 172.17.88.103 delete Class "默认 BOOTP 的类别" "BOOTP 客户端的用户类别" 424f4f54502e4d6963726f736f6674 0 b
netsh Dhcp Server 172.17.88.103 delete Class "Microsoft Windows 2000 选项" "Windows 2000 客户端的 Microsoft 供应商特定选项" 4d53465420352e30 1 b
netsh Dhcp Server 172.17.88.103 delete Class "Microsoft Windows 98 选项" "Windows 98 客户端的 Microsoft 供应商特定选项" 4d534654203938 1 b
netsh Dhcp Server 172.17.88.103 delete Class "Microsoft 选项" "适用于 Windows 98 和 Windows 2000 客户端的 Microsoft 供应商特定选项" 4d534654 1 b
---------------------

6)copy出windows2008R2dhcp服务器导出的文件相应注册类内容，并修改主机或ip名称以适合windows2003服务器使用
-内容B--------------------------------------------------
netsh Dhcp Server 172.17.88.103 Add Class "Default Routing and Remote Access Class" "User class for remote access clients" 525241532e4d6963726f736f6674 0 b
netsh Dhcp Server 172.17.88.103 Add Class "Default Network Access Protection Class" "Default special user class for Restricted Access clients" 4d5346542051756172616e74696e65 0 b
netsh Dhcp Server 172.17.88.103 Add Class "Default BOOTP Class" "User class for BOOTP Clients" 424f4f54502e4d6963726f736f6674 0 b
netsh Dhcp Server 172.17.88.103 Add Class "Microsoft Windows 2000 Options" "Microsoft vendor-specific options for Windows 2000 and above Clients" 4d53465420352e30 1 b
netsh Dhcp Server 172.17.88.103 Add Class "Microsoft Windows 98 Options" "Microsoft vendor-specific options for Windows 98 Clients" 4d534654203938