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Dev9900-8314 avatar image
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Dev9900-8314 asked Dev9900-8314 commented

SCCM OS Deployement using Switch DHCP & Static IP

Hi everyone,

We are going to deploy OS using SCCM.
Need few details, Kindly help....

  1. In case if there is no Microsoft DHCP running, what are the Configuration on Switch Level that should boot devices from PXE. Need complete configuration or at-least that i should guide Network team.

  2. What if there is no DHCP in Switch working and Static IP are used for Client ,In this case is there any possibilities to deploy OS using PXE or directory using software center.

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yannara avatar image
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yannara answered Dev9900-8314 commented
  1. Do you have any DHCP service or not? It doesn't matter is it Windows Server or router which provides IPs for clients. It matters that routing and DNS are set correctly and you talk to your Active Directory. To be able to PXE boot, you need IP helper which is a part of router config. You tell IPhelper you PXE server and that's it.

  2. Without DHCP service, with static IPs, you can use Boot Image (USB stick) and when it launches, you can set static IPs. It might/should work and bring that IPconfig to the native OS. But this is a headache. Never used that, I never saw OSD installation room without DHCP.

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Thanks Mr.Yannara

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AlexZhu-MSFT avatar image
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AlexZhu-MSFT answered Jason-MSFT commented

Hi,

Intel PXE specification defines the method of network booting, which requires DHCP and TFTP servers.

ConfigMgr utilizes WDS role (installed in the Distribution Point) to act as the TFTP server (for boot file, PE, etc. transmition) and content server (for OS image transmition, via HTTP or HTTPS).

For DHCP server, ConfigMgr doesn't care about if there is a Microsfot DHCP sever or not. If an equivalent is available, that will do. If the network device (switch/router/firewall) acts as the DHCP server, no difference for the netowrk booting.

For netowrk booting, the boot process is initiated by the PXE program preloaded in the network apapter, at this time, no OS existing, and there is no way to set a static IP address. For the sencond question, the answer is: No. However, if we are doing IPU (In Place Upgrade) for an existing OS, we can launch the upgrade task from Software Center.

Regards,

Alex
If the response is helpful, please click "Accept Answer" and upvote it.

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One additional note/correction to the above: We added a PXE responder to ConfigMgr a while back obviating the need for WDS and using this built-in PXE responder is the preferred method.

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Dev9900-8314 avatar image
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Dev9900-8314 answered Jason-MSFT commented

Thanks..what are the Switch Side configuration to tell client to use Switch DHCP and Switch DHCP Configuration for WDS/SCCM Server, Like we do in Microsoft DHCP.

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That's a question for your switch vendor however there is no recommended configuration for DHCP configuration in ConfigMgr to account for PXE boot as the recommended approach is to use IP helpers to forward DHCP/PXE broadcasts and not DHCP options.

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Dev9900-8314 avatar image
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Dev9900-8314 answered AlexZhu-MSFT commented

and if its used Static IP, PXE is not possible, can you share the reference link from Microsoft about this statement.

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This is not a Microsoft statement to make, it's by definition of PXE.

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Hi Dev9900-8314,

As Jason clarified, there is no document from Microsoft as PXE is not a Microsoft specification. And yannara explained it again in the subsequent reply.

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Dev9900-8314 avatar image
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Dev9900-8314 answered

Thanks for the help....

Regards,

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