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ISC DHCP & Microsoft RIS

May 11th, 2010 No comments

Our organization made the switch from a Microsoft based DHCP solution to an appliance based DHCP solution (Linux based). Recently, someone went to use Microsoft Remote Installation Service (RIS) and noticed that the process was broken.

The initial report was that the computer could not obtain a DHCP lease using PXE boot, which I found to be odd since no other devices were having issues obtaining a lease. A quick scroll through the DHCP server logs revealed that the computer was requesting a lease and the DHCP server was offering an address. Once I took a look at the affected computer, I noticed that the PXE boot client was returning an error code of “PXE-53″. This error indicates that the client was able to obtain an IP address, but was not able to download the needed file.

When using Microsoft RIS with a MS DHCP server, all needed configuration is taken care of automatically. Once you bring in a non-Microsoft solution into the mix, some manual configuration is required. Luckily this configuration is minimal. Below are the lines of code that you need to added to the dhcp.conf file in order to get an ISC compatible DHCP server to work with Microsoft RIS. I have tested this on an Infoblox 550A appliance, but the code should work on any ISC compatible DHCP server.

server-name “MY-RIS-SERVER”;
next-server 192.168.1.26;
filename “\\OSChooser\\i386\\startrom.com”;

The needed lines are fairly self-explanatory. “server-name” is the hostname of your RIS server, and “next-server” is the IP address of the same server. Finally, “filename” is the path of the file you want to boot with (In this case I choose to boot to the OS Chooser). Note that this path is relative to the default storage path for RIS, and the extra backslashes “\” are required for the config file to parse correctly.

After making these changes, save the config file and restart the DHCP daemon.

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BES + Windows 2008 + Exchange 2003

March 11th, 2010 No comments

Problem: You are trying to build a new Blackberry Enterprise Server on top of Windows Server 2008 and your mail server is running Exchange 2003. The BES prerequisites state that you need to install the Exchange 2003 management tools on the BES, but they will not install on Windows Server 2008

Solution: Follow this link to download the “Exchange Server 2003 MAPI CDO 1.2.1″. I verified with Blackberry Technical Support that the installation of the MAPI CDO will satisfy the BES requirements.

Solution Tested On: Windows Server 2008 R2 (x64)

Note: Windows Server 2008 R2, is not yet offically supported by RIM. The support representatives I spoke with where kind enough to help me out anyway. Keep in mind that if they are unable to resolve your issue, your case may not be escilated if the server is running Windows Server 2008 R2. RIM is currently testing this platform, so it will be come offically supported at some point.

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