How to use Server based DHCP with ICX switches

[r_gent]

Hi,

currently trying to get dhcp to work with a few new 7150's we dhcp running on one of our server connected to the primary switch.

We have multiple subnets for various areas. but can figure out how to use the switch as a relay for dhcp.

[tim_brumbaugh]

So the thing to learn hers is that when a DHCP broadcast hits a switch with routing turned on and has an IP-Helper configured on the Virtual interface or VE it will forward that broadcast to the DHCP server.  If that DHCP server has a pool of addresses that match the subnet from which the broadcast was forwarded from, it will hand one out to the device that is requesting the ip address even though the DHCP server lives on a different subnet.