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msdhcp [2009/05/24 14:07] rulerof |
msdhcp [2010/03/15 16:41] (current) sha0 Correct image file locations |
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| {{:reservation-options.png}} | {{:reservation-options.png}} | ||
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| + | ==== Setting up a gPXE Encapsulated Options on Windows DHCP ==== | ||
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| + | Unfortunately, this is fairly tricky and involves manually editing the array of bytes that will be sent to the gPXE client in DHCP option 175, which is where Etherboot/gPXE encapsulated options go. | ||
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| + | Firstly, you need to create the encapsulated options. Right-click on the server, then choose "Set Predefined Options..." | ||
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| + | {{msdhcp:win_dhcp_encap1.jpg}} | ||
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| + | Click the "Add..." button. | ||
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| + | {{msdhcp:win_dhcp_encap2.jpg}} | ||
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| + | Use the following options then click the "OK" button: | ||
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| + | Name: gPXE_Options | ||
| + | Data type: Encapsulated | ||
| + | Code: 175 | ||
| + | Description: gPXE_Options | ||
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| + | {{msdhcp:win_dhcp_encap3.jpg}} | ||
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| + | Click the "Edit Array..." button: | ||
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| + | {{msdhcp:win_dhcp_encap4.jpg}} | ||
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| + | This is where you can manually enter some defaults. We'll use iSCSI username and password as an example. We see from gpxe/src/include/gpxe/dhcp.h that the username option is 0xBE and the password option is 0xBF. So add these along with an end-of-option code and click the "OK" button: | ||
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| + | 0xBE 0xBF 0xFF | ||
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| + | {{msdhcp:win_dhcp_encap5.jpg}} | ||
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| + | Back in the "Predefined Options and Values" window, click the "OK" button: | ||
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| + | {{msdhcp:win_dhcp_encap6.jpg}} | ||
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| + | Now choose a client who you'd like to configure specific options for in the "Reservations" area. Right-click and choose "Configure Options...": | ||
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| + | {{msdhcp:win_dhcp_encap7.jpg}} | ||
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| + | Find the gPXE_Options with code 175 that you defined: | ||
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| + | {{msdhcp:win_dhcp_encap8.jpg}} | ||
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| + | Now you can manually add in a username and a password, following the respective options numbers: | ||
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| + | {{msdhcp:win_dhcp_encap9.jpg}} | ||
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| + | Now you must insert the length for the username, and the length for the password. In our example, "u s e r n a m e" and "p a s s w o r d" are both 8 characters long, so we use the hexadecimal value for 8. The length field goes right after the option field. Once entered, you may click the "OK" button: | ||
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| + | {{msdhcp:win_dhcp_encap10.jpg}} | ||
