02-06-2012 02:19 AM
Wondering if anyone can help me, if at all possible?!
Wondering if it is possible to have a DHCP server hand out only one ip adress to a spesific port on an EX switch?
I want eg. port 48 to give out the adress 192.168.1.90 no matter which machine/equipment is connected to it.
All other ports will give out in the range 192.168.1.1-192.168.1.254 as normal.
To make this even more complicated I want to run the DHCP server on one of my Microsoft servers.
So in essence, lock one port to give out one spesific adress thru DHCP.
02-06-2012 01:12 PM
The DHCP server on the Microsoft box would not be an issue, but I do not know of any way to break up a DHCP scope by the port the traffic was received on.
02-08-2012 06:31 AM
You may be able to do this - make sure the RVI for that VLAN is on the same switch and the DHCP server is in a different subnet. Then look into forwarding-options helpers bootp dhcp-option82. This appends the incoming interface to a DHCP request, so the server can identify port. It's been a while since I've used MS DHCP, but you may be able to allocate an address based on the contents of the Option 82 field.
Hope this helps - post back here if you get it working
JNCIP-ENT, JNCIP-SP, JNCIP-DC, JNCIE-SEC #63
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