DHCP & Subnetting

Subnetting is at the network level, not at the application level, so your question is kinda strange. But I?ll take a whack at it.

You can subnet at anytime, with any device that you can configure TCP/IP on it.

The DHCP will provide addresses on any subnet provided you redirect the request to it.

DHCP works with broadcasts. Broadcasts do not cross routers unless you configure them to. In Cisco routers, the command is IP Helper-address. That tells the router where to send the broadcast (in this case, the DHCP request).

The DHCP configuration is simple. You configure the segment according to the subnet you want to use. If it gets a request rerouted from a router from that specific segment, it will provide and address.

Now, I don't think I can get into more details without knowing a little more about what you really want to do, and how your network is set up.

Feel free to contact me for more details.

Good luck.

Remember also that while DHCP broadcasts don't cross routers, DHCP relay agents can.

Normally, all of the subnetting of DHCP is done from the DHCP control applet itself (DHCP Manager or similar). You normally enter it in the properties of the DHCP scope.

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