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I want to create 14 subnets (10.10.10.0/23, 10.10.20.0/23, 10.10.30.0/23, etc) I have a DHCP server running on a 15. subnet, 10.100.10.0/24 with the address of 10.100.10.100.

The problem that arises is that when I create more than 1 scope in the DHCP-server, the leases start moving from the DHCP-server table, and into the router DHCP lease table. I can also see that the leases provided have DNS from the router, and not the windowsserver.

Does anyone have any idea what this "fault" is?

-I have configured all interfaces except "the 15. subnet" with relay agent on the router pointing to DHCP-server address. Switches are also configured with IP-helper address that point to the DHCP-server. there are no other DHCP service activated in the network, or any networks except for the windowsserver.

Thanks in advance.

EDIT:

I have checked on client that DHCP and DNS "server" is listed as Gateway. this I find very strange as all interfaces except the one with DHCP-server is on is enabled as Relay agent only.

CPlusPlusandHTMLguy
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1 Answers1

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The fault was caused by missing IP-helper address on the "core" switch. (I had to setup interface based relay, vlan based was apparently not enough). works as intended now.

CPlusPlusandHTMLguy
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